驱动所有外设

2026-07-14 18:17:00 +08:00
parent 2d0d000a38
commit d4112399c2
51 changed files with 126956 additions and 143 deletions
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -13,6 +13,8 @@ STM32CubeMX 生成的项目，使用 **Keil MDK-ARM V5.32** 工具链。
  - `lcd.c/h` — 绘图模块（字符/字符串、线条、矩形、圆形）
  - `lcd_data.c/h` — ASCII 8×16 字库
  - `hz16_data.c/h` — CJK 16×16 字库
 - `STM32F103C8T6/Drivers/BSP/AT24C02/` — AT24C02 EEPROM 驱动
  - `at24c02.c/h` — I2C 读写（字节/页/连续，自动跨页）
 ## 硬件配置
 - **MCU**: STM32F103C8T6 (LQFP48, 72MHz, 64KB Flash, 20KB RAM)
@@ -20,18 +22,20 @@ STM32CubeMX 生成的项目，使用 **Keil MDK-ARM V5.32** 工具链。
 - **外设**:
  - USART1: PA9 (TX), PA10 (RX) — 异步模式
  - SPI2: PB13 (SCK), PB15 (MOSI) — 18MHz, DMA1_Channel5
  - I2C1: PB8 (SCL), PB9 (SDA) — AT24C02 EEPROM
  - LED: PC13 (低电平有效，上拉)
  - 按键: PB3 (KEY1), PB4 (KEY2), PB5 (KEY3), PC14 (KEY4), PC15 (KEY5) — 下拉
  - LCD: PB10 (DC), PB11 (CS), PB12 (RST), PB13 (SCK), PB15 (SDA) — ST7735S 128x160
-  - TIM4: PB6~9 四路 1kHz PWM
+  - TIM3: PA6~PB1 四路 1kHz PWM（PA6 CH1, PA7 CH2, PB0 CH3, PB1 CH4）
-  - TIM3: CH4 内部触发 ADC1 注入组
+  - TIM4: 仅做 ADC 触发源，TRGO=Update 输出至 ADC1（1kHz，无引脚占用）
-  - ADC1: IN0~IN3 (PA0~PA3), 注入组, TIM3_CH4 触发
+  - ADC1: IN0~IN3 (PA0~PA3), 注入组, TIM4_TRGO 触发
 ## 初始化顺序（main.c）
 ```
 HAL_Init → SystemClock_Config → MX_GPIO → MX_DMA → MX_USART1 → MX_SPI2
 → MX_TIM4 → MX_ADC1 → MX_TIM3
-→ button_driver_init() → st7735s_init() → lcd_* draw → PWM start → ADC start
+→ button_driver_init() → st7735s_init() → lcd_* draw
 → TIM3 PWM start (PA6~PB1) → TIM4 Base start (TRGO→ADC) → ADC injected start
 ```
 ## ADC 采坑记录（不可从 CubeMX 重新生成时光靠设置）
@@ -39,10 +43,15 @@ HAL_Init → SystemClock_Config → MX_GPIO → MX_DMA → MX_USART1 → MX_SPI2
  ```c
  RCC->CFGR = (RCC->CFGR & ~RCC_CFGR_ADCPRE) | RCC_CFGR_ADCPRE_DIV6;
  ```
- **TIM3_CH4 触发 ADC**: CubeMX 默认生成 `TIM_OCMODE_TIMING`，这不会产生 OC4REF 上升沿 → ADC 收不到触发。必须在 `tim.c` 中手动改为 `TIM_OCMODE_PWM1` + `Pulse = 500`。CubeMX 需选 CH4 为 "PWM Generation4 No Output" 并设 Pulse=500。
+- **TIM4_TRGO 触发 ADC（当前方案）**: CubeMX 中 TIM4 无任何 PWM 通道，生成的 `MasterOutputTrigger` 为 `TIM_TRGO_RESET` → TRGO 无脉冲。必须在 `USER CODE TIM4_Init 2` 中写寄存器：
  ```c
  TIM4->CR2 = (TIM4->CR2 & ~TIM_CR2_MMS) | TIM_CR2_MMS_1;  /* TRGO = Update */
  ```
  启动时用 `HAL_TIM_Base_Start(&htim4)` 即可。
 - **旧方案（已废弃）**: TIM3_CH4 触发 ADC 已废弃（PB8/PB9 改为 I2C）。
 ## printf 无 MicroLIB
-在 `usart.c` 中通过 `#pragma import(__use_no_semihosting)` + 提供 `_sys_exit()` + `struct __FILE` + `FILE __stdout` 实现。Keil 取消勾选 Use MicroLIB 即可。
+在 `usart.c` 的 USER CODE 区通过 `#pragma import(__use_no_semihosting)` + `_sys_exit()` + `_ttywrch()` + `struct __FILE` + `FILE __stdout` 实现。Keil 取消勾选 Use MicroLIB 即可。
 ## SPI 注意事项
 - LCD (ST7735S) 使用**硬件SPI2**（PB13 SCK, PB15 MOSI），18MHz，**Mode 3**（CPOL=HIGH, CPHA=2EDGE）
--- a/AT24C02.md
+++ b/AT24C02.md
@@ -0,0 +1,620 @@
 ## 1. 描述
 24C02/04/08/16/32/64是电可擦除PROM，分别采用256/512/1024/2048/4096/8192×8-bit的组织结构以及两线串行接口。电压可允许低至1.8V，待机电流和工作电流分别为1μA和1mA。24C02/04/08/16/32/64具有页写能力，每页分别为8/16/16/16/32/32字节。24C02/04/08/16/32/64具有8-pin PDIP和8-pin SOP和5-pin SOT 23-5三种封装形式
 ## 2. 特点
 - 宽范围的工作电压1.8V\~5.5V  
 - 低电压技术
 - 1mA典型工作电流  
 - 1μA 典型待机电流
 \- 存储器组织结构
 - 24C02, 256 X 8 (2K bits)  
 - 24C04, 512 X 8 (4K bits)  
 - 24C08, 1024 X 8 (8K bits)  
 - 24C16, 2048 X 8 (16K bits)  
 - 24C32, 4096 X 8 (32K bits)  
 - 24C64, 8192 X 8 (64K bits)
 - 2线串行接口，完全兼容I²C总线  
 - I²C时钟频率为1 MHz (5V), 400 kHz (1.8V, 2.5V, 2.7V)  
 - 施密特触发输入噪声抑制  
 - 硬件数据写保护  
 - 内部写周期 (最大5 ms)  
 - 可按字节写  
 - 页写:8字节页(24C02),16字节页(24C04/08/16),32字节页(24C32/64)  
 - 可按字节，随机和序列读  
 - 自动递增地址  
 - ESD保护大于2.5kV  
 - 高可靠性
 - 擦写寿命：100万次  
 - 数据保持时间：100年
 - 8-pin DIP和8-pin SOP封装  
 - 无铅工艺，符合RoHS标准
 ## 3. 应用领域
 - 智能仪器仪表  
 - 计算机 笔记本电脑
 - 工业控制  
 - 汽车电子
 - 家用电器  
 - 通信设备
 引脚排列  
 封装:5L SOT-23-5  
 ![](images/c419ed60d710663ed92d6c42974a1d8a9f7728dc3dae52d9e33750893f70908a.jpg)
 封装: SOP-8  
 ![](images/6ba0ea98276577ca5cfc1c2dcbc479ecca81b5eb3efc2e23962700ac3cbff822.jpg)  
 (顶视图)
 5. 框图  
 ![](images/a7d37d8cce73f3ed06fe00f80f893a1ecf54de1615ae2d59b2431ea03de5dc8e.jpg)
 <details>
 <summary>flowchart</summary>
 ```mermaid
 graph TD
  WP["WP"] --> SERIAL["SERIAL CONTROL LOGIC"]
  SCL["SCL"] --> START["START STOP LOGIC"]
  SDA["SDA"] --> START
  START --> SERIAL
  SERIAL -->|"EN"| HIGH["HIGH VOLTAGE PUMP/TIMING"]
  HIGH --> DATA_RECOVERY["DATA RECOVERY"]
  DATA_RECOVERY --> EEPROM["EEPROM"]
  DATA_RECOVERY --> X_Decoder["X DECODER"]
  XDecoder["X Decoder"] --> EEPROM
  DATA_Word["DATA WORD ADDRESS COUNTER"] --> Y_Decoder["Y DECODER"]
  YDecoder["Y Decoder"] --> EEPROM
  EEPROM --> SERIAL_MUX["SERIAL MUX"]
  SERIAL_MUX --> DOUT["DOUT/ACKNOWLEDGE"]
  DOUT -->|"DIN"| SERIAL
  SERIAL -->|"COMP"| DEVICE["DEVICE ADDRESS COMPARATOR"]
  DEVICE -->|"LOAD"| SERIAL
  DEVICE -->|"LOAD"| DATA
  DATA -->|"LOAD"| SERIAL
  SERIAL -->|"LOAD"| DATA
  DATA -->|"LOAD"| DEVICE
  DEVICE -->|"LOAD"| SERIAL
  SERIAL -->|"LOAD"| DATA
  DATA -->|"LOAD"| DEVICE
  DATA -->|"LOAD"| SERIAL
  SERIAL -->|"LOAD"| DATA
  DATA -->|"LOAD"| SERIAL
  SERIAL -->|"LOAD"| DATA
  DATA -->|"LOAD"| SERIAL
 ```
 </details>
 图1 框图
 ## 6. 最大额定参数
 (超出最大额定参数可能会导致器件损坏)
 <table><tr><td>参数</td><td>符号</td><td>值</td><td>单位</td></tr><tr><td>直流供电电压</td><td> $V_{CC}$ </td><td>-0.3 ~ +6.5</td><td>V</td></tr><tr><td>直流输入电压</td><td> $V_{IN}$ </td><td>-0.3 ~  $V_{CC}$  +0.3</td><td>V</td></tr><tr><td>直流输出电压</td><td> $V_{OUT}$ </td><td>-0.3 ~  $V_{CC}$  +0.3</td><td>V</td></tr><tr><td>存储温度</td><td> $T_{STG}$ </td><td>-65 ~ +150</td><td>°C</td></tr><tr><td>ESD电压(人体模型)</td><td rowspan="2"> $V_{ESD}$ </td><td>2500</td><td>V</td></tr><tr><td>ESD电压(机器模型)</td><td>200</td><td>V</td></tr></table>
 ## 推荐工作条件
 (7)应在推荐工作条件下实现功能)
 <table><tr><td>参数</td><td>符号</td><td>最小值</td><td>最大值</td><td>单位</td></tr><tr><td>直流供电电压</td><td> $V_{CC}$ </td><td>1.8</td><td>5.5</td><td>V</td></tr><tr><td>工作温度</td><td> $T_{A}$ </td><td>-40</td><td>+85</td><td>°C</td></tr></table>
 电话：0755-82568886 82568883
 邮箱：idchip@indreamchip.com
 传真：0755-82568886
 网址：www.idchip.cn
 公司地址：深圳市福田区滨河大道联合广场A座1308
 ## 8. 引脚电容
 (条件： $T_{A}=25^{\circ}C$ , f=1.0 MHz, $V_{CC}=+1.8V$ )
 <table><tr><td>参数</td><td>符号</td><td>测试条件</td><td>最小值</td><td>最大值</td><td>单位</td></tr><tr><td>输入/输出电容(SDA)</td><td> $C_{I/O}$ </td><td> $V_{I/O} = 0V$ </td><td></td><td>8</td><td>pF</td></tr><tr><td>输入电容(A0, A1, A2, SCL)</td><td> $C_{IN}$ </td><td> $V_{IN} = 0V$ </td><td></td><td>6</td><td>pF</td></tr></table>
 ## 9. 直流电气特性
 (条件： $T_{A}=0^{\circ}C\sim+70^{\circ}C,V_{CC}=+1.8V\sim+5.5V$ ，除非另有注释)
 <table><tr><td>参数</td><td>符号</td><td colspan="2">测试条件</td><td>最小值</td><td>典型值</td><td>最大值</td><td>单位</td></tr><tr><td rowspan="2">供电电流</td><td rowspan="2"> $I_{CC}$ </td><td rowspan="2"> $V_{CC}=5V$ </td><td>100kHz读</td><td></td><td>0.4</td><td>1.0</td><td>mA</td></tr><tr><td>100kHz写</td><td></td><td>2.0</td><td>3.0</td><td>mA</td></tr><tr><td>待机电流</td><td> $I_{SB}$ </td><td colspan="2"> $V_{IN}=V_{CC}$ 或GND</td><td></td><td></td><td>1.0</td><td>μA</td></tr><tr><td>输入漏电流</td><td> $I_{LI}$ </td><td colspan="2"> $V_{IN}=V_{CC}$ 或GND</td><td></td><td></td><td>3.0</td><td>μA</td></tr><tr><td>输出漏电流</td><td> $I_{LO}$ </td><td colspan="2"> $V_{OUT}=V_{CC}$ 或GND</td><td></td><td>0.05</td><td>3.0</td><td>μA</td></tr><tr><td>输入低电平电压</td><td> $V_{IL}$ </td><td colspan="2"></td><td>-0.6</td><td></td><td> $V_{CC} \times 0.3$ </td><td>V</td></tr><tr><td>输入高电平电压</td><td> $V_{IH}$ </td><td colspan="2"></td><td> $V_{CC} \times 0.7$ </td><td></td><td> $V_{CC}+0.5$ </td><td>V</td></tr><tr><td rowspan="3">输出低电平电压</td><td> $V_{OL3}$ </td><td colspan="2"> $V_{CC}=5.0V, I_{OL}=3.0mA$ </td><td></td><td></td><td>0.4</td><td>V</td></tr><tr><td> $V_{OL2}$ </td><td colspan="2"> $V_{CC}=3.0V, I_{OL}=2.1mA$ </td><td></td><td></td><td>0.4</td><td>V</td></tr><tr><td> $V_{OL1}$ </td><td colspan="2"> $V_{CC}=1.8V, I_{OL}=0.15mA$ </td><td></td><td></td><td>0.2</td><td>V</td></tr></table>
 ## 10. 交流电气特性
 (条件： $T_{A}=0^{\circ}C\sim+70^{\circ}C,V_{CC}=+1.8V\sim+5.5V,C_{L}=100pF$ ，除非另有注释)
 <table><tr><td>参数</td><td>符号</td><td>测试条件</td><td>最小值</td><td>典型值</td><td>最大值</td><td>单位</td></tr><tr><td rowspan="2">时钟频率, SCL</td><td rowspan="2"> $f_{SCL}$ </td><td> $V_{CC}=1.8V$ </td><td></td><td></td><td>400</td><td rowspan="2">kHz</td></tr><tr><td> $V_{CC}=5V$ </td><td></td><td></td><td>1000</td></tr><tr><td rowspan="2">时钟低电平宽度</td><td rowspan="2"> $t_{LOW}$ </td><td> $V_{CC}=1.8V$ </td><td>1.2</td><td></td><td></td><td rowspan="2">μs</td></tr><tr><td> $V_{CC}=5V$ </td><td>0.6</td><td></td><td></td></tr><tr><td rowspan="2">时钟高电平宽度</td><td rowspan="2"> $t_{HIGH}$ </td><td> $V_{CC}=1.8V$ </td><td>0.6</td><td></td><td></td><td rowspan="2">μs</td></tr><tr><td> $V_{CC}=5V$ </td><td>0.4</td><td></td><td></td></tr><tr><td rowspan="2">噪声消除时间</td><td rowspan="2"> $t_{I}$ </td><td> $V_{CC}=1.8V$ </td><td></td><td></td><td>50</td><td rowspan="2">ns</td></tr><tr><td> $V_{CC}=5V$ </td><td></td><td></td><td>40</td></tr><tr><td rowspan="2">时钟下降沿到数据有效输出间隔时间</td><td rowspan="2"> $t_{AA}$ </td><td> $V_{CC}=1.8V$ </td><td>0.05</td><td></td><td>0.9</td><td rowspan="2">μs</td></tr><tr><td> $V_{CC}=5V$ </td><td>0.05</td><td></td><td>0.55</td></tr><tr><td rowspan="2">总线释放时间</td><td rowspan="2"> $t_{BUF}$ </td><td> $V_{CC}=1.8V$ </td><td>1.2</td><td></td><td></td><td rowspan="2">μs</td></tr><tr><td> $V_{CC}=5V$ </td><td>0.5</td><td></td><td></td></tr></table>
 ## 交流电气特性
 ## 10. (续)
 <table><tr><td>参数</td><td>符号</td><td>测试条件</td><td>最小值</td><td>典型值</td><td>最大值</td><td>单位</td></tr><tr><td rowspan="2">起始条件保持时间</td><td rowspan="2"> $t_{HD.STA}$ </td><td> $V_{CC}=1.8V$ </td><td>0.6</td><td></td><td></td><td rowspan="2">μs</td></tr><tr><td> $V_{CC}=5V$ </td><td>0.25</td><td></td><td></td></tr><tr><td rowspan="2">起始条件建立时间</td><td rowspan="2"> $t_{SU.STA}$ </td><td> $V_{CC}=1.8V$ </td><td>0.6</td><td></td><td></td><td rowspan="2">μs</td></tr><tr><td> $V_{CC}=5V$ </td><td>0.25</td><td></td><td></td></tr><tr><td>数据输入保持时间</td><td> $t_{HD.DAT}$ </td><td></td><td>0</td><td></td><td></td><td>μs</td></tr><tr><td>数据输入建立时间</td><td> $t_{SU.DAT}$ </td><td></td><td>100</td><td></td><td></td><td>ns</td></tr><tr><td>输入上升时间</td><td> $t_R$ </td><td></td><td></td><td></td><td>300</td><td>ns</td></tr><tr><td rowspan="2">输入下降时间</td><td rowspan="2"> $t_F$ </td><td> $V_{CC}=1.8V$ </td><td></td><td></td><td>300</td><td rowspan="2">ns</td></tr><tr><td> $V_{CC}=5V$ </td><td></td><td></td><td>100</td></tr><tr><td rowspan="2">停止条件建立时间</td><td rowspan="2"> $t_{SU.STO}$ </td><td> $V_{CC}=1.8V$ </td><td>0.6</td><td></td><td></td><td rowspan="2">μs</td></tr><tr><td> $V_{CC}=5V$ </td><td>0.25</td><td></td><td></td></tr><tr><td>数据输出保持时间</td><td> $t_{DH}$ </td><td></td><td>50</td><td></td><td></td><td>ns</td></tr><tr><td>写周期</td><td> $t_{WR}$ </td><td></td><td></td><td></td><td>5</td><td>ms</td></tr></table>
 ![](images/0d3af022a5406d9ac18fdf62751f04eed4735102054c52a20bfe3101e2b319b2.jpg)
 <details>
 <summary>flowchart</summary>
 ```mermaid
 graph LR
  subgraph SCL
  SCL -->|tF| SCL
  SCL -->|tLOW| SCL
  SCL -->|tHIGH| SCL
  SCL -->|tLOW| SCL
  SCL -->|tR| SCL
  end
  subgraph SDA_IN
  SDA_IN -->|tSU.STO| SDA_OUT
  SDA_IN -->|tHD.DAT| SDA_OUT
  SDA_IN -->|tHD.DAT| SDA_OUT
  SDA_IN -->|tSU.DAT| SDA_OUT
  SDA_IN -->|tAA| SDA_OUT
  SDA_OUT -->|tBUF| SDA_OUT
  end
  SCL -.->|tSU.STA| SDA_IN
  SCL -.->|tHD.STA| SDA_IN
  SCL -.->|tSU.DAT| SDA_IN
  SCL -.->|tSU.DAT| SDA_OUT
 ```
 </details>
 图2 总线时序  
 ![](images/921b907b53b015ce42701e7092a87c140cd5f09427e4bb78249c9a8373fc7d70.jpg)
 <details>
 <summary>text_image</summary>
 SCL
 SDA
 8th BIT ACK
 STOP CONDITION
 tWR(1)
 START CONDITION
 </details>
 注1. 写周期时间 $t_{WR}$ 是指从一个写序列的有效停止条件开始至内部写周期结束的时间。
 电话：0755-82568886 82568883
 图3 写周期时序
 邮箱：idchip@indreamchip.com
 传真：0755-82568886
 网址：www.idchip.cn
 公司地址：深圳市福田区滨河大道联合广场A座1308
 11. 引脚说明
 <table><tr><td>引脚号</td><td>引脚名称</td><td>功能说明</td></tr><tr><td>1</td><td>A0</td><td rowspan="3">地址输入。A2、A1和A0是器件地址输入引脚。24C02/32/64使用A2、A1和A0输入引脚作为硬件地址,总线上可同时级联8个24C02/32/64器件(详见器件寻址)。24C04使用A2和A1输入引脚作为硬件地址,总线上可同时级联4个24C04器件,A0为空脚,可接地。24C08使用A2输入引脚作为硬件地址,总线上可同时级联2个24C08器件,A0和A1为空脚,可接地。24C16未使用器件地址引脚,总线上最多只可连接一个16K器件,A2、A1和A0为空脚,可接地。</td></tr><tr><td>2</td><td>A1</td></tr><tr><td>3</td><td>A2</td></tr><tr><td>5</td><td>SDA</td><td>串行地址和数据输入/输出。SDA是双向串行数据传输引脚,漏极开路,需外接上拉电阻到Vcc(典型值10kΩ)。</td></tr><tr><td>6</td><td>SCL</td><td>串行时钟输入。SCL同步数据传输,上升沿数据写入,下降沿数据读出。</td></tr><tr><td>7</td><td>WP</td><td>写保护。WP引脚提供硬件数据保护。当WP接地时,允许数据正常读写操作;当WP接Vcc时,写保护,只读。</td></tr><tr><td>4</td><td>GND</td><td>地</td></tr><tr><td>8</td><td>Vcc</td><td>正电源</td></tr></table>
 12. 存储结构
 <table><tr><td>器件</td><td>总容量(位)</td><td>总页数</td><td>字节/页</td><td>字地址长度</td></tr><tr><td>24C02</td><td>2K</td><td>32</td><td>8</td><td>8位</td></tr><tr><td>24C04</td><td>4K</td><td>32</td><td>16</td><td>9位</td></tr><tr><td>24C08</td><td>8K</td><td>64</td><td>16</td><td>10位</td></tr><tr><td>24C16</td><td>16K</td><td>128</td><td>16</td><td>11位</td></tr><tr><td>24C32</td><td>32K</td><td>128</td><td>32</td><td>12位</td></tr><tr><td>24C64</td><td>64K</td><td>256</td><td>32</td><td>13位</td></tr></table>
 24CXX支持I²C总线传输协议。I²C是一种双向、两线串行通讯接口，分别是串行数据线SDA和串行时钟线SCL。两根线都必须通过一个上拉电阻接到电源。典型的总线配置如图4所示
 ![](images/f5f3264751412418266380c70af5ffe56c644e6ae0abd6e9b5a7a87a25415275.jpg)
 <details>
 <summary>text_image</summary>
 SDA
 SCL
 MPU
 24Cxx
 其他外围
 RP
 RP
 Vcc
 两线串行
 数据总线
 </details>
 图4 典型两线总线配置
 总线上发送数据的器件被称作发送器，接收数据的器件被称作接收器。控制信息交换的器件被称作主器件，受主器件控制的器件则被称作从器件。主器件产生串行时钟SCL，控制总线的访问状态、产生START和STOP条件。24CXX在I²C总线中作为从器件工作。
 只有当总线处于空闲状态时才可以启动数据传输。每次数据传输均开始于START条件，结束于STOP条件，二者之间的数据字节数是没有限制的，由总线上的主器件决定。信息以字节（8位）为单位传输，第9位时由接收器产生应答。
 ## 起始和停止条件
 数据和时钟线都为高则称总线处在空闲状态。当SCL为高电平时SDA的下降沿（高到低叫做起始条件（START，简写为S），SDA的上升沿（低到高）则叫做停止条件（STOP，简写为P）。参见图5。
 ![](images/c0321b84d9cfb979fb70a5923d30f6a9c3a4c7d8cfc969bcfe39ade6362885f5.jpg)
 <details>
 <summary>text_image</summary>
 S S
 </details>
 起始条件
 图5 起始条件和停止条件的定义
 ## 13. 详细操作说明（续）
 ## 位传输
 每个时钟脉冲传送一位数据。SCL为高时SDA必须保持稳定，因为此时SDA的改变被认为是控制信号。位传输参见图6。
 ![](images/11780fff236471cef48d4b80a3b7f791103d8ba0c1cb0e53b01f4369f1a3beb6.jpg)
 <details>
 <summary>flowchart</summary>
 This diagram illustrates the signal processing logic for SDA and SCL channels, showing how data lines are optimized based on data validity and data reform.
 </details>
 图6 位传输
 ## 应答
 总线上的接收器每接收到一个字节就产生一个应答，主器件必须产生一个对应的额外的时钟脉冲，见图7。
 ![](images/450b53ad10191dd10963296165304cd9b46c5c4211e2e14326f9d94ef984387c.jpg)
 <details>
 <summary>flowchart</summary>
 ```mermaid
 graph LR
  subgraph Sender_Data
  A["发送器输出的数据"] --> B{"信号波形"}
  B --> C["接收器输出的数据"]
  C --> D["非应答"]
  D --> E["应答"]
  E --> F["应答时钟脉冲"]
  end
  subgraph Main_Device
  G["主器件发出的SCL"] --> H{"脉冲大小"}
  H --> I["1"]
  H --> J["2"]
  H --> K["8"]
  H --> L["9"]
  I --> M["起始条件"]
  J --> M
  K --> M
  L --> M
  end
 ```
 </details>
 图7 I²C总线的应答
 接收器拉低SDA线表示应答，并在应答脉冲期间保持稳定的低电平。当主器件作接收器时，必须发出数据传输结束的信号给发送器，即它在最后一个字节之后的应答脉冲期间不会产生应答信号（不拉低SDA）。这种情况下，发送器必须释放SDA线为高以便主器件产生停止条件。
 ## 器件寻址
 起始条件使能芯片读写操作后，EEPROM都要求有8位的器件地址信息（见图8）。
 器件地址信息由"1"、"0"序列组成，前4位如图中所示，对于所有串行EEPROM都是一样的。
 对于24C02/32/64，随后3位A2、A1和A0为器件地址位，必须与硬件输入引脚保持一致。
 对于24C04，随后2位A2和A1为器件地址位，另1位为页地址位。A2和A1必须与硬件输入引脚保持一致，而A0是空脚。
 对于24C08，随后1位A2为器件地址位，另2位为页地址位。A2必须与硬件输入引脚保持一致，而A1和A0是空脚。
 对于24C16，无器件地址位，3位都为页地址位，而A2、A1和A0是空脚。
 器件地址信息的LSB为读/写操作选择位，高为读操作，低为写操作。
 若比较器件地址一致，EEPROM将输出应答"0"。如果不一致，则返回到待机状态。
 ![](images/6f8cd9135f965151ed61693b94671cef0953207dba231451a79a5375ef1615a1.jpg)  
 图8 器件地址
 ## 器件操作
 ## 待机模式
 EEPROM具有低功耗待机的特点，条件为：（1）电源上电；（2）接收停止条件及完成任何内部操作后。
 ## 存储复位
 当协议中产生中断、掉电或系统复位后， $I^{2}C$ 总线可通过以下步骤复位：
 （1）产生9个时钟周期。  
 (2) 当SCL为高时，SDA也为高。  
 (3) 产生一个起始条件。
 ## 写操作
 ## 1. 字节写
 写操作要求在接收器件地址和ACK应答后，接收8位的字地址。接收到这个地址后EEPROM应答"0"，然后是一个8位数据。在接收8位数据后，EEPROM应答"0"，接着必须由主器件发送停止条件来终止写序列。
 此时EEPROM进入内部写周期tWR，数据写入非易失性存储器中，在此期间所有输入都无效。直到写周期完成，EEPROM才会有应答（见图9）。
 ![](images/30a2090ab8d9403170895ca4117fc242a9e71da171288cba693a081a4539c776.jpg)  
 图9 字节写
 电话：0755-82568886 82568883
 邮箱：idchip@indreamchip.com
 传真：0755-82568886
 网址：www.idchip.cn
 公司地址：深圳市福田区滨河大道联合广场A座1308
 ## 13. 详细操作说明（续）
 ## 2. 页写
 24C02器件按8字节/页执行页写，24C04/08/16器件按16字节/页执行页写，24C32/64器件按32字节/页执行页写。
 页写初始化与字节写相同，只是主器件不会在第一个数据后发送停止条件，而是在EEPROM EEPROM收到每个数据后都应答“0”。最后仍需由主器件发送停止条件，终止写序列（见图10）。
 接收到每个数据后，字地址的低3位（24C02）或4位（24C04/08/16）或5位（24C32/64）内部自动加1，高位地址位不变，维持在当前页内。当内部产生的字地址达到该页边界地址时，随后的数据将写入该页的页首。如果超过8个（24C02）或16个（24C04/08/16）或32个（24C32/64）数据传送给了EEPROM，字地址将回转到该页的首字节，先前的字节将会被覆盖。
 ![](images/8c22849289aa48205d253e2f4156315e5ff2c0e035c2a755ac563598d2f8870e.jpg)  
 图10页写
 ## 3. 应答查询
 一旦内部写周期启动，EEPROM输入无效，此时即可启动应答查询：发送起始条件和器件地址（读/写位为期望的操作）。只有内部写周期完成，EEPROM才应答"0"。之后可继续读/写操作。
 应答查询流程见图11。
 ![](images/8870eab0a63a479c4183441b9a4beceed35a6e9cca4cfbeb087ac48c7f81b2d8.jpg)
 <details>
 <summary>flowchart</summary>
 ```mermaid
 graph TD
  A["发送写命令"] --> B["发送停止条件\n启动写周期"]
  B --> C["发送起始条件"]
  C --> D["发送控制字节\nR/W = 0"]
  D --> E{"器件是否应答\n(ACK = 0)?"}
  E -->|否| C
  E -->|是| F["下一操作"]
 ```
 </details>
 图11 应答查询流程
 电话：0755-82568886 82568883
 邮箱：idchip@indreamchip.com
 传真：0755-82568886
 网址：www.idchip.cn
 公司地址：深圳市福田区滨河大道联合广场A座1308
 ## 读操作
 读操作与写操作初始化相同，只是器件地址中的读/写选择位应为"1"。有三种不同的读操作方式：当前地址读，随机读和顺序读。
 ## 1. 当前地址读
 内部地址计数器保存着上次访问时最后一个地址加1的值。只要芯片有电，该地址就一直保存。当读到最后页的最后字节，地址会回转到0；当写到某页尾的最后一个字节，地址会回转到该页的首字节。
 接收器件地址（读/写选择位为"1"）、EEPROM应答ACK后，当前地址的数据就随时钟送出。主器件无需应答"0"，但需发送停止条件（见图12）。
 ![](images/d9bfeedc4bcce65f4b0f1efdffd5284b1333d300c9ea79d7c2f0f9a3af90462d.jpg)  
 图12 当前地址读
 ## 2. 随机读
 随机读需先写一个目标字地址，一旦EEPROM接收器件地址和字地址并应答了ACK，主器件就产生一个重复的起始条件。
 然后，主器件发送器件地址（读/写选择位为"1"），EEPROM应答ACK，并随时钟送出数据。主器件无需应答"0"，但需发送停止条件（见图13）。
 ![](images/421790c202a01919147c762730b1d01863bf27b2b014a9cd06750cb98e7aa039.jpg)  
 图13 随机读
 ## 3. 顺序读
 顺序读可以通过“当前地址读”或“随机读”启动。主器件接收到一个数据后，应答ACK。只要EEPROM接收到ACK，将自动增加字地址并继续随时钟发送后面的数据。若达到存储器地址末尾，地址自动回转到0，仍可继续顺序读取数据。
 主器件不应答"0"，而发送停止条件，即可结束顺序读操作（见图14）。
 ![](images/273cc9c991c594ec12065b7f1899338388085d1759f6e8c5b79a7fb11d9c6903.jpg)  
 图14 顺序读
 电话：0755-82568886 82568883
 邮箱：idchip@indreamchip.com
 传真：0755-82568886
 网址：www.idchip.cn
 公司地址：深圳市福田区滨河大道联合广场A座1308
 ## 14. 典型应用
 ![](images/475b4becc6ae83e4697a215910157bf2489b3a3af187fff9454f40609bc1a065.jpg)
 <details>
 <summary>text_image</summary>
 U1 24C02
 A0 VCC
 1
 A1 SCL
 2
 A2 SDA
 3
 GND WP
 4
 器件地址: 0xA2
 U2 24C02
 A0 VCC
 1
 A1 SCL
 2
 A2 SDA
 3
 GND WP
 4
 器件地址: 0xA0
 Vcc
 R1
 10K
 R2
 10K
 SCL
 SDA
 7
 7
 8
 6
 5
 5
 7
 Vcc
 </details>
 图15 EEPROM的级联
 ## 15. 封装尺寸
 ## SOP8L
 ![](images/eba51943bd5f2beda585f8e9279369cb57b7a774eec360973f2a6882a32f1433.jpg)
 <details>
 <summary>text_image</summary>
 A3
 A1
 A2
 B1
 B
 A
 </details>
 ![](images/b046e1014232d347dcf75379befa873d3977114c2ec09489907dae8d752b799f.jpg)
 <details>
 <summary>text_image</summary>
 C1
 C2
 C
 C3
 </details>
 ![](images/6f745019aa2594536cb033d2faa05f065d5a1b4e091c66235a870986ff711441.jpg)
 <details>
 <summary>text_image</summary>
 R2
 θ4
 θ1
 θ2
 θ3
 R1
 B2
 D1
 D
 </details>
 <table><tr><td rowspan="2">符号</td><td colspan="2">尺寸(mm)</td><td rowspan="2">符号</td><td colspan="2">尺寸(mm)</td></tr><tr><td>最小值</td><td>最大值</td><td>最小值</td><td>最大值</td></tr><tr><td>A</td><td>4.95</td><td>5.15</td><td>C3</td><td>0.05</td><td>0.20</td></tr><tr><td>A1</td><td>0.37</td><td>0.47</td><td>C4</td><td colspan="2">0.20(典型值)</td></tr><tr><td>A2</td><td colspan="2">1.27(典型值)</td><td>D</td><td colspan="2">1.05(典型值)</td></tr><tr><td>A3</td><td colspan="2">0.41(典型值)</td><td>D1</td><td>0.40</td><td>0.60</td></tr><tr><td>B</td><td>5.80</td><td>6.20</td><td>R1</td><td colspan="2">0.07(典型值)</td></tr><tr><td>B1</td><td>3.80</td><td>4.00</td><td>R2</td><td colspan="2">0.07(典型值)</td></tr><tr><td>B2</td><td colspan="2">5.0(典型值)</td><td>θ1</td><td colspan="2">17°(典型值)</td></tr><tr><td>C</td><td>1.30</td><td>1.50</td><td>θ2</td><td colspan="2">13°(典型值)</td></tr><tr><td>C1</td><td>0.55</td><td>0.65</td><td>θ3</td><td colspan="2">4°(典型值)</td></tr><tr><td>C2</td><td>0.55</td><td>0.65</td><td>θ4</td><td colspan="2">12°(典型值)</td></tr></table>
 DIP8L  
 ![](images/a1baeeedb5248a7f40711c629ce1e47c224edd5e73dd3379d68349d3a5da55cb.jpg)
 <details>
 <summary>text_image</summary>
 A
 B
 </details>
 ![](images/a274c63a6a8b3ff4db32535684cc40cde6c819e4d726c47497edad6db437ace0.jpg)
 <details>
 <summary>text_image</summary>
 D2
 θ1
 θ2
 θ3
 D1
 D
 </details>
 ![](images/8b7ea40276e71ed888a9d2098c54354ea79a2cdce9786de72368a6448ede2569.jpg)
 <details>
 <summary>text_image</summary>
 C
 C1
 C2
 C3
 A5
 A3
 A1
 A4
 A2
 C4
 </details>
 <table><tr><td rowspan="2">符号</td><td colspan="2">尺寸(mm)</td><td rowspan="2">符号</td><td colspan="2">尺寸(mm)</td></tr><tr><td>最小值</td><td>最大值</td><td>最小值</td><td>最大值</td></tr><tr><td>A</td><td>9.30</td><td>9.50</td><td>C2</td><td colspan="2">0.5(典型值)</td></tr><tr><td>A1</td><td colspan="2">1.524(典型值)</td><td>C3</td><td colspan="2">3.3(典型值)</td></tr><tr><td>A2</td><td>0.39</td><td>0.53</td><td>C4</td><td colspan="2">1.57(典型值)</td></tr><tr><td>A3</td><td colspan="2">2.54(典型值)</td><td>D</td><td>8.20</td><td>8.80</td></tr><tr><td>A4</td><td colspan="2">0.66(典型值)</td><td>D1</td><td>0.20</td><td>0.35</td></tr><tr><td>A5</td><td colspan="2">0.99(典型值)</td><td>D2</td><td>7.62</td><td>7.87</td></tr><tr><td>B</td><td>6.3</td><td>6.5</td><td>θ1</td><td colspan="2">8°(典型值)</td></tr><tr><td>C</td><td colspan="2">7.20(典型值)</td><td>θ2</td><td colspan="2">8°(典型值)</td></tr><tr><td>C1</td><td>3.30</td><td>3.50</td><td>θ3</td><td colspan="2">5°(典型值)</td></tr></table>
 TSOT-23-5 PACKAGE OUTLINE DIMENSIONS  
 ![](images/b4fcf3b07d9f62ea2a6c5352c8fec08881df2aff873b3988a3290866f45e1b8f.jpg)
 <details>
 <summary>text_image</summary>
 D
 b
 E
 E1
 e
 e1
 </details>
 ![](images/47a06a68bc533e64ed9450794c00cb1ab7181ca88c7904f18bfd1117748a5a6a.jpg)
 <details>
 <summary>text_image</summary>
 θ
 0.2
 L
 c
 </details>
 ![](images/c2f579a2e71a198b40cac5453045c0d8c4f22a2c4ccafb4bb876095b5a66efee.jpg)
 <details>
 <summary>text_image</summary>
 A1
 A2
 A
 </details>
 <table><tr><td rowspan="2">Symbol</td><td colspan="2">Dimensions In Millimeters</td><td colspan="2">Dimensions In Inches</td></tr><tr><td>Min</td><td>Max</td><td>Min</td><td>Max</td></tr><tr><td>A</td><td>0.700</td><td>0.900</td><td>0.028</td><td>0.035</td></tr><tr><td>A1</td><td>0.000</td><td>0.100</td><td>0.000</td><td>0.004</td></tr><tr><td>A2</td><td>0.700</td><td>0.800</td><td>0.028</td><td>0.031</td></tr><tr><td>b</td><td>0.350</td><td>0.500</td><td>0.014</td><td>0.020</td></tr><tr><td>c</td><td>0.080</td><td>0.200</td><td>0.003</td><td>0.008</td></tr><tr><td>D</td><td>2.820</td><td>3.020</td><td>0.111</td><td>0.119</td></tr><tr><td>E</td><td>1.600</td><td>1.700</td><td>0.063</td><td>0.067</td></tr><tr><td>E1</td><td>2.650</td><td>2.950</td><td>0.104</td><td>0.116</td></tr><tr><td>e</td><td colspan="2">0.95 (BSC)</td><td colspan="2">0.037 (BSC)</td></tr><tr><td>e1</td><td colspan="2">1.90 (BSC)</td><td colspan="2">0.075 (BSC)</td></tr><tr><td>L</td><td>0.300</td><td>0.600</td><td>0.012</td><td>0.024</td></tr><tr><td>θ</td><td>0°</td><td>8°</td><td>0°</td><td>8°</td></tr></table>
--- a/AT24C02.pdf
+++ b/AT24C02.pdf
--- a/STM32F103C8T6/.mxproject
+++ b/STM32F103C8T6/.mxproject
--- a/STM32F103C8T6/Core/Inc/i2c.h
+++ b/STM32F103C8T6/Core/Inc/i2c.h
@@ -0,0 +1,52 @@
 /* USER CODE BEGIN Header */
 /**
  ******************************************************************************
  * @file    i2c.h
  * @brief   This file contains all the function prototypes for
  *          the i2c.c file
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2026 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
 /* USER CODE END Header */
 /* Define to prevent recursive inclusion -------------------------------------*/
 #ifndef __I2C_H__
 #define __I2C_H__
 #ifdef __cplusplus
 extern "C" {
 #endif
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
 /* USER CODE BEGIN Includes */
 /* USER CODE END Includes */
 extern I2C_HandleTypeDef hi2c1;
 /* USER CODE BEGIN Private defines */
 /* USER CODE END Private defines */
 void MX_I2C1_Init(void);
 /* USER CODE BEGIN Prototypes */
 /* USER CODE END Prototypes */
 #ifdef __cplusplus
 }
 #endif
 #endif /* __I2C_H__ */
--- a/STM32F103C8T6/Core/Inc/stm32f1xx_hal_conf.h
+++ b/STM32F103C8T6/Core/Inc/stm32f1xx_hal_conf.h
@@ -46,7 +46,7 @@
 /*#define HAL_ETH_MODULE_ENABLED   */
 /*#define HAL_FLASH_MODULE_ENABLED   */
 #define HAL_GPIO_MODULE_ENABLED
-/*#define HAL_I2C_MODULE_ENABLED   */
+#define HAL_I2C_MODULE_ENABLED
 /*#define HAL_I2S_MODULE_ENABLED   */
 /*#define HAL_IRDA_MODULE_ENABLED   */
 /*#define HAL_IWDG_MODULE_ENABLED   */
--- a/STM32F103C8T6/Core/Src/adc.c
+++ b/STM32F103C8T6/Core/Src/adc.c
@@ -71,7 +71,7 @@ void MX_ADC1_Init(void)
  sConfigInjected.InjectedRank = ADC_INJECTED_RANK_1;
  sConfigInjected.InjectedNbrOfConversion = 4;
  sConfigInjected.InjectedSamplingTime = ADC_SAMPLETIME_41CYCLES_5;
-  sConfigInjected.ExternalTrigInjecConv = ADC_EXTERNALTRIGINJECCONV_T3_CC4;
+  sConfigInjected.ExternalTrigInjecConv = ADC_EXTERNALTRIGINJECCONV_T4_TRGO;
  sConfigInjected.AutoInjectedConv = DISABLE;
  sConfigInjected.InjectedDiscontinuousConvMode = DISABLE;
  sConfigInjected.InjectedOffset = 0;
--- a/STM32F103C8T6/Core/Src/i2c.c
+++ b/STM32F103C8T6/Core/Src/i2c.c
@@ -0,0 +1,117 @@
 /* USER CODE BEGIN Header */
 /**
  ******************************************************************************
  * @file    i2c.c
  * @brief   This file provides code for the configuration
  *          of the I2C instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2026 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
 /* USER CODE END Header */
 /* Includes ------------------------------------------------------------------*/
 #include "i2c.h"
 /* USER CODE BEGIN 0 */
 /* USER CODE END 0 */
 I2C_HandleTypeDef hi2c1;
 /* I2C1 init function */
 void MX_I2C1_Init(void)
 {
  /* USER CODE BEGIN I2C1_Init 0 */
  /* USER CODE END I2C1_Init 0 */
  /* USER CODE BEGIN I2C1_Init 1 */
  /* USER CODE END I2C1_Init 1 */
  hi2c1.Instance = I2C1;
  hi2c1.Init.ClockSpeed = 100000;
  hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
  hi2c1.Init.OwnAddress1 = 0;
  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c1.Init.OwnAddress2 = 0;
  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN I2C1_Init 2 */
  /* USER CODE END I2C1_Init 2 */
 }
 void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
 {
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(i2cHandle->Instance==I2C1)
  {
  /* USER CODE BEGIN I2C1_MspInit 0 */
  /* USER CODE END I2C1_MspInit 0 */
    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**I2C1 GPIO Configuration
    PB8     ------> I2C1_SCL
    PB9     ------> I2C1_SDA
    */
    GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
    __HAL_AFIO_REMAP_I2C1_ENABLE();
    /* I2C1 clock enable */
    __HAL_RCC_I2C1_CLK_ENABLE();
  /* USER CODE BEGIN I2C1_MspInit 1 */
  /* USER CODE END I2C1_MspInit 1 */
  }
 }
 void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
 {
  if(i2cHandle->Instance==I2C1)
  {
  /* USER CODE BEGIN I2C1_MspDeInit 0 */
  /* USER CODE END I2C1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_I2C1_CLK_DISABLE();
    /**I2C1 GPIO Configuration
    PB8     ------> I2C1_SCL
    PB9     ------> I2C1_SDA
    */
    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8);
    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_9);
  /* USER CODE BEGIN I2C1_MspDeInit 1 */
  /* USER CODE END I2C1_MspDeInit 1 */
  }
 }
 /* USER CODE BEGIN 1 */
 /* USER CODE END 1 */
--- a/STM32F103C8T6/Core/Src/main.c
+++ b/STM32F103C8T6/Core/Src/main.c
@@ -20,6 +20,7 @@
 #include "main.h"
 #include "adc.h"
 #include "dma.h"
 #include "i2c.h"
 #include "spi.h"
 #include "tim.h"
 #include "usart.h"
@@ -31,6 +32,7 @@
 #include "button_driver.h"
 #include "st7735s.h"
 #include "lcd.h"
 #include "at24c02.h"
 /* USER CODE END Includes */
@@ -102,6 +104,7 @@ int main(void)
  MX_TIM4_Init();
  MX_ADC1_Init();
  MX_TIM3_Init();
  MX_I2C1_Init();
  /* USER CODE BEGIN 2 */
  printf("\r\nSTM32F103C8T6 Boot OK\r\n");
  button_driver_init();
@@ -115,17 +118,17 @@ int main(void)
  lcd_draw_chinese_string(0, 32, "\xE9\x98\x9C\xE9\x98\xB3\xE5\xB8\x88\xE8\x8C\x83\xE5\xA4\xA7\xE5\xAD\xA6", COLOR_WHITE, COLOR_BLACK); /*阜阳师范大学*/
  lcd_draw_chinese_string(0, 48, "\xE7\x94\xB5\xE5\xAD\x90\xE8\xAE\xBE\xE8\xAE\xA1\xE7\xAB\x9E\xE8\xB5\x9B", COLOR_WHITE, COLOR_BLACK); /*电子设计竞赛*/
-  /* 启动 TIM4 四路 PWM */
+  /* 启动 TIM3 四路 PWM（PA6 CH1, PA7 CH2, PB0 CH3, PB1 CH4） */
-  HAL_TIM_PWM_Start(&htim4, TIM_CHANNEL_1);  /* PB6 */
+  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);
-  HAL_TIM_PWM_Start(&htim4, TIM_CHANNEL_2);  /* PB7 */
+  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_2);
-  HAL_TIM_PWM_Start(&htim4, TIM_CHANNEL_3);  /* PB8 */
+  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_3);
-  HAL_TIM_PWM_Start(&htim4, TIM_CHANNEL_4);  /* PB9 */
+  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_4);
  /* 设置占空比（0~999 对应 0%~100%） */
-  __HAL_TIM_SET_COMPARE(&htim4, TIM_CHANNEL_1, 500);  /* 50% */
+  __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_1, 500);  /* 50% */
-  __HAL_TIM_SET_COMPARE(&htim4, TIM_CHANNEL_2, 250);  /* 25% */
+  __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 250);  /* 25% */
-  __HAL_TIM_SET_COMPARE(&htim4, TIM_CHANNEL_3, 750);  /* 75% */
+  __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 750);  /* 75% */
-  __HAL_TIM_SET_COMPARE(&htim4, TIM_CHANNEL_4, 999);  /* 100% */
+  __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 999);  /* 100% */
  /* === 测试：常规组软件触发，确认 ADC 硬件正常 === */
  HAL_ADC_Start(&hadc1);
@@ -134,12 +137,51 @@ int main(void)
  }
  HAL_ADC_Stop(&hadc1);
-  /* 启动 TIM3 CH4（产生 ADC 触发信号） */
+  /* 启动 TIM4（TRGO = Update，1kHz 触发 ADC1 注入组） */
-  HAL_TIM_OC_Start(&htim3, TIM_CHANNEL_4);
+  HAL_TIM_Base_Start(&htim4);
-  /* 启动 ADC 注入组（TIM3 每触发一次，自动采一轮 PA0~PA3） */
+  /* 启动 ADC 注入组（TIM4 每触发一次，自动采一轮 PA0~PA3） */
  HAL_ADCEx_InjectedStart(&hadc1);
  /* === AT24C02 EEPROM 测试 === */
  {
      uint8_t wbuf[] = {0x11, 0x22, 0x33, 0x44, 0x55};
      uint8_t rbuf[8];
      int i, ret;
      ret = at24c02_scan();
      if (ret == AT24C02_OK) {
          lcd_draw_string(0, 64, "AT24C02 OK", COLOR_GREEN, COLOR_BLACK);
      } else {
          lcd_draw_string(0, 64, "AT24C02 FAIL", COLOR_RED, COLOR_BLACK);
      }
      /* 在地址 0 写入 5 个字节 */
      ret = at24c02_write_buf(0, wbuf, 5);
      printf("AT24C02 write: %d\r\n", ret);
      /* 从地址 0 读回 8 个字节 */
      ret = at24c02_read_buf(0, rbuf, 8);
      printf("AT24C02 read[%d]:", ret);
      for (i = 0; i < 8; i++) {
          printf(" %02X", rbuf[i]);
      }
      printf("\r\n");
      /* 验证 */
      lcd_draw_string(0, 80, "EEPROM:", COLOR_WHITE, COLOR_BLACK);
      for (i = 0; i < 5; i++) {
          if (rbuf[i] != wbuf[i]) {
              printf("AT24C02 ERR: addr %d expect %02X got %02X\r\n",
                     i, wbuf[i], rbuf[i]);
              break;
          }
      }
      if (i == 5) {
          printf("AT24C02 verify OK\r\n");
      }
  }
  /* USER CODE END 2 */
  /* Infinite loop */
@@ -152,7 +194,7 @@ int main(void)
    HAL_Delay(1000);
    HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
-    /* 读取 ADC 注入组结果（TIM3 以 1kHz 触发，每秒打印一次最新值） */
+    /* 读取 ADC 注入组结果（TIM4 以 1kHz 触发，每秒打印一次最新值） */
    uint16_t adc0 = HAL_ADCEx_InjectedGetValue(&hadc1, ADC_INJECTED_RANK_1);
    uint16_t adc1 = HAL_ADCEx_InjectedGetValue(&hadc1, ADC_INJECTED_RANK_2);
    uint16_t adc2 = HAL_ADCEx_InjectedGetValue(&hadc1, ADC_INJECTED_RANK_3);
@@ -201,7 +243,7 @@ void SystemClock_Config(void)
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
-  PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV2;
+  PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
--- a/STM32F103C8T6/Core/Src/tim.c
+++ b/STM32F103C8T6/Core/Src/tim.c
@@ -71,15 +71,26 @@ void MX_TIM3_Init(void)
  sConfigOC.Pulse = 500;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.Pulse = 0;
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM3_Init 2 */
  /* 注意：若从 CubeMX 重新生成，务必在 TIM3 CH4 的 OC Mode 选 PWM1，Pulse 设 500，
     否则 ADC 注入组外部触发无法工作。
     此处手动修改 sConfigOC.OCMode 和 sConfigOC.Pulse 为 PWM1/500 */
  /* USER CODE END TIM3_Init 2 */
  HAL_TIM_MspPostInit(&htim3);
 }
 /* TIM4 init function */
@@ -92,7 +103,6 @@ void MX_TIM4_Init(void)
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};
  /* USER CODE BEGIN TIM4_Init 1 */
@@ -112,42 +122,14 @@ void MX_TIM4_Init(void)
  {
    Error_Handler();
  }
-  if (HAL_TIM_PWM_Init(&htim4) != HAL_OK)
+  sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
-  {
+  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_ENABLE;
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 500;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.Pulse = 0;
  if (HAL_TIM_PWM_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.Pulse = 500;
  if (HAL_TIM_PWM_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM4_Init 2 */
  /* USER CODE END TIM4_Init 2 */
  HAL_TIM_MspPostInit(&htim4);
 }
@@ -181,27 +163,33 @@ void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
 {
  GPIO_InitTypeDef GPIO_InitStruct = {0};
-  if(timHandle->Instance==TIM4)
+  if(timHandle->Instance==TIM3)
  {
-  /* USER CODE BEGIN TIM4_MspPostInit 0 */
+  /* USER CODE BEGIN TIM3_MspPostInit 0 */
-  /* USER CODE END TIM4_MspPostInit 0 */
+  /* USER CODE END TIM3_MspPostInit 0 */
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
-    /**TIM4 GPIO Configuration
+    /**TIM3 GPIO Configuration
-    PB6     ------> TIM4_CH1
+    PA6     ------> TIM3_CH1
-    PB7     ------> TIM4_CH2
+    PA7     ------> TIM3_CH2
-    PB8     ------> TIM4_CH3
+    PB0     ------> TIM3_CH3
-    PB9     ------> TIM4_CH4
+    PB1     ------> TIM3_CH4
    */
-    GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9;
+    GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
-  /* USER CODE BEGIN TIM4_MspPostInit 1 */
+  /* USER CODE BEGIN TIM3_MspPostInit 1 */
-  /* USER CODE END TIM4_MspPostInit 1 */
+  /* USER CODE END TIM3_MspPostInit 1 */
  }
 }
--- a/STM32F103C8T6/Drivers/BSP/AT24C02/at24c02.c
+++ b/STM32F103C8T6/Drivers/BSP/AT24C02/at24c02.c
@@ -0,0 +1,225 @@
 /*
 * 模块名称：AT24C02 EEPROM 驱动
 * 模块功能：提供AT24C02的读写操作接口，基于STM32 HAL I2C
 * 适用平台：STM32F103C8T6
 * 作者：王建锋
 * 创建日期：2026-07-14
 * 修改记录：
 *     2026-07-14  王建锋  创建初始版本
 */
 #include "at24c02.h"
 #include <stdio.h>
 /* 引用CubeMX生成的I2C句柄 */
 extern I2C_HandleTypeDef hi2c1;
 /*
 * 函数功能：AT24C02字节写入
 * 入口参数：addr - 目标地址（0~255）
 *           data - 要写入的数据
 * 返回值： 0=成功，负值=错误码
 * 函数说明：先发送写命令，再等待内部写周期完成
 */
 int at24c02_write_byte(uint8_t addr, uint8_t data)
 {
    uint8_t buf[2];
    HAL_StatusTypeDef hal_ret;
    buf[0] = addr;
    buf[1] = data;
    hal_ret = HAL_I2C_Master_Transmit(&hi2c1, AT24C02_ADDR_WRITE,
                                      buf, 2, AT24C02_I2C_TIMEOUT);
    if (hal_ret != HAL_OK) {
        return AT24C02_ERR_I2C;
    }
    /* 等待内部写周期完成 */
    return at24c02_wait_ready();
 }
 /*
 * 函数功能：AT24C02随机读取
 * 入口参数：addr - 目标地址（0~255）
 * 返回值：>=0=读取的数据，负值=错误码
 * 函数说明：假写操作设定地址，再重新发送读命令读取
 */
 int at24c02_read_byte(uint8_t addr)
 {
    uint8_t data;
    HAL_StatusTypeDef hal_ret;
    /* 假写：发送设备地址 + 字地址 */
    hal_ret = HAL_I2C_Master_Transmit(&hi2c1, AT24C02_ADDR_WRITE,
                                      &addr, 1, AT24C02_I2C_TIMEOUT);
    if (hal_ret != HAL_OK) {
        return AT24C02_ERR_I2C;
    }
    /* 重发起始条件 + 读 */
    hal_ret = HAL_I2C_Master_Receive(&hi2c1, AT24C02_ADDR_READ,
                                     &data, 1, AT24C02_I2C_TIMEOUT);
    if (hal_ret != HAL_OK) {
        return AT24C02_ERR_I2C;
    }
    return data;
 }
 /*
 * 函数功能：AT24C02页写入
 * 入口参数：addr - 起始地址（0~255）
 *           p_data - 数据缓冲区指针
 *           len - 写入长度（≤8）
 * 返回值： 0=成功，负值=错误码
 * 函数说明：页写入，自动等待写周期完成
 */
 int at24c02_write_page(uint8_t addr, const uint8_t *p_data, uint8_t len)
 {
    uint8_t buf[AT24C02_PAGE_SIZE + 1];
    HAL_StatusTypeDef hal_ret;
    uint8_t i;
    /* 参数校验 */
    if ((p_data == NULL) || (len == 0) || (len > AT24C02_PAGE_SIZE)) {
        return AT24C02_ERR_PARAM;
    }
    if (addr + len > AT24C02_SIZE) {
        return AT24C02_ERR_PARAM;
    }
    buf[0] = addr;
    for (i = 0; i < len; i++) {
        buf[i + 1] = p_data[i];
    }
    hal_ret = HAL_I2C_Master_Transmit(&hi2c1, AT24C02_ADDR_WRITE,
                                      buf, len + 1, AT24C02_I2C_TIMEOUT);
    if (hal_ret != HAL_OK) {
        return AT24C02_ERR_I2C;
    }
    /* 等待内部写周期完成 */
    return at24c02_wait_ready();
 }
 /*
 * 函数功能：AT24C02连续写入（跨页自动拆分）
 * 入口参数：addr - 起始地址（0~255）
 *           p_data - 数据缓冲区指针
 *           len - 写入长度
 * 返回值： 0=成功，负值=错误码
 * 函数说明：自动处理跨页边界，逐页写入
 */
 int at24c02_write_buf(uint8_t addr, const uint8_t *p_data, uint16_t len)
 {
    uint8_t page_remaining;
    int ret;
    if ((p_data == NULL) || (len == 0)) {
        return AT24C02_ERR_PARAM;
    }
    if (addr + len > AT24C02_SIZE) {
        return AT24C02_ERR_PARAM;
    }
    while (len > 0) {
        /* 当前页剩余空间 */
        page_remaining = AT24C02_PAGE_SIZE - (addr % AT24C02_PAGE_SIZE);
        if (page_remaining > len) {
            page_remaining = (uint8_t)len;
        }
        ret = at24c02_write_page(addr, p_data, page_remaining);
        if (ret != AT24C02_OK) {
            return ret;
        }
        addr += page_remaining;
        p_data += page_remaining;
        len -= page_remaining;
    }
    return AT24C02_OK;
 }
 /*
 * 函数功能：AT24C02连续读取
 * 入口参数：addr - 起始地址（0~255）
 *           p_buf - 接收缓冲区指针
 *           len - 读取长度
 * 返回值： 0=成功，负值=错误码
 * 函数说明：从指定地址开始顺序读取多个字节
 */
 int at24c02_read_buf(uint8_t addr, uint8_t *p_buf, uint16_t len)
 {
    HAL_StatusTypeDef hal_ret;
    if ((p_buf == NULL) || (len == 0)) {
        return AT24C02_ERR_PARAM;
    }
    if (addr + len > AT24C02_SIZE) {
        return AT24C02_ERR_PARAM;
    }
    /* 假写：设定读起始地址 */
    hal_ret = HAL_I2C_Master_Transmit(&hi2c1, AT24C02_ADDR_WRITE,
                                      &addr, 1, AT24C02_I2C_TIMEOUT);
    if (hal_ret != HAL_OK) {
        return AT24C02_ERR_I2C;
    }
    /* 顺序读 */
    hal_ret = HAL_I2C_Master_Receive(&hi2c1, AT24C02_ADDR_READ,
                                     p_buf, len, AT24C02_I2C_TIMEOUT);
    if (hal_ret != HAL_OK) {
        return AT24C02_ERR_I2C;
    }
    return AT24C02_OK;
 }
 /*
 * 函数功能：检测AT24C02设备是否存在
 * 入口参数：无
 * 返回值： 0=检测到设备，-1=未响应
 * 函数说明：通过I2C发送设备地址，检查是否有ACK应答
 */
 int at24c02_scan(void)
 {
    HAL_StatusTypeDef hal_ret;
    hal_ret = HAL_I2C_IsDeviceReady(&hi2c1, AT24C02_ADDR_WRITE,
                                    3, AT24C02_I2C_TIMEOUT);
    if (hal_ret != HAL_OK) {
        printf("AT24C02: no device found\r\n");
        return AT24C02_ERR_DEVICE;
    }
    printf("AT24C02: device detected\r\n");
    return AT24C02_OK;
 }
 /*
 * 函数功能：等待内部写周期完成（应答查询）
 * 入口参数：无
 * 返回值： 0=完成，-3=超时
 * 函数说明：发送设备地址（写模式），直到器件应答
 */
 int at24c02_wait_ready(void)
 {
    HAL_StatusTypeDef hal_ret;
    uint16_t trials = 50;
    while (trials--) {
        hal_ret = HAL_I2C_IsDeviceReady(&hi2c1, AT24C02_ADDR_WRITE,
                                        1, 1);
        if (hal_ret == HAL_OK) {
            return AT24C02_OK;
        }
        HAL_Delay(1);
    }
    return AT24C02_ERR_TIMEOUT;
 }
--- a/STM32F103C8T6/Drivers/BSP/AT24C02/at24c02.h
+++ b/STM32F103C8T6/Drivers/BSP/AT24C02/at24c02.h
@@ -0,0 +1,102 @@
 /*
 * 模块名称：AT24C02 EEPROM 驱动
 * 模块功能：提供AT24C02的读写操作接口，基于STM32 HAL I2C
 * 适用平台：STM32F103C8T6
 * 作者：王建锋
 * 创建日期：2026-07-14
 * 修改记录：
 *     2026-07-14  王建锋  创建初始版本
 */
 #ifndef __AT24C02_H
 #define __AT24C02_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 #include "main.h"
 /* AT24C02 器件参数 */
 #define AT24C02_ADDR_WRITE      0xA0    /* 写设备地址 (A2=A1=A0=GND) */
 #define AT24C02_ADDR_READ       0xA1    /* 读设备地址 */
 #define AT24C02_SIZE            256     /* 总字节数 */
 #define AT24C02_PAGE_SIZE       8       /* 页大小 */
 #define AT24C02_PAGE_NUM        32      /* 总页数 */
 #define AT24C02_I2C_TIMEOUT     100     /* I2C 通讯超时 (ms) */
 /* AT24C02 操作返回值 */
 #define AT24C02_OK              0       /* 操作成功 */
 #define AT24C02_ERR_DEVICE      -1      /* 设备未响应 */
 #define AT24C02_ERR_I2C         -2      /* I2C通讯错误 */
 #define AT24C02_ERR_TIMEOUT     -3      /* 写周期超时 */
 #define AT24C02_ERR_PARAM       -4      /* 参数错误 */
 /*
 * 函数功能：检测AT24C02设备是否存在
 * 入口参数：无
 * 返回值： 0=检测到设备，-1=未响应
 * 函数说明：通过I2C发送设备地址，检查是否有ACK应答
 */
 int at24c02_scan(void);
 /*
 * 函数功能：AT24C02字节写入
 * 入口参数：addr - 目标地址（0~255）
 *           data - 要写入的数据
 * 返回值： 0=成功，负值=错误码
 * 函数说明：先发送写命令，再等待内部写周期完成
 */
 int at24c02_write_byte(uint8_t addr, uint8_t data);
 /*
 * 函数功能：AT24C02随机读取
 * 入口参数：addr - 目标地址（0~255）
 * 返回值：>=0=读取的数据，负值=错误码
 * 函数说明：假写操作设定地址，再重新发送读命令读取
 */
 int at24c02_read_byte(uint8_t addr);
 /*
 * 函数功能：AT24C02页写入（不超过页边界）
 * 入口参数：addr - 起始地址（0~255）
 *           p_data - 数据缓冲区指针
 *           len - 写入长度（≤8）
 * 返回值： 0=成功，负值=错误码
 * 函数说明：页写入，自动等待写周期完成
 */
 int at24c02_write_page(uint8_t addr, const uint8_t *p_data, uint8_t len);
 /*
 * 函数功能：AT24C02连续写入（跨页自动拆分）
 * 入口参数：addr - 起始地址（0~255）
 *           p_data - 数据缓冲区指针
 *           len - 写入长度
 * 返回值： 0=成功，负值=错误码
 * 函数说明：自动处理跨页边界，逐页写入
 */
 int at24c02_write_buf(uint8_t addr, const uint8_t *p_data, uint16_t len);
 /*
 * 函数功能：AT24C02连续读取
 * 入口参数：addr - 起始地址（0~255）
 *           p_buf - 接收缓冲区指针
 *           len - 读取长度
 * 返回值： 0=成功，负值=错误码
 * 函数说明：从指定地址开始顺序读取多个字节
 */
 int at24c02_read_buf(uint8_t addr, uint8_t *p_buf, uint16_t len);
 /*
 * 函数功能：等待内部写周期完成（应答查询）
 * 入口参数：无
 * 返回值： 0=完成，-3=超时
 * 函数说明：发送设备地址（写模式），直到器件应答
 */
 int at24c02_wait_ready(void);
 #ifdef __cplusplus
 }
 #endif
 #endif /* __AT24C02_H */
--- a/STM32F103C8T6/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_i2c.h
+++ b/STM32F103C8T6/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_hal_i2c.h
@@ -0,0 +1,738 @@
 /**
  ******************************************************************************
  * @file    stm32f1xx_hal_i2c.h
  * @author  MCD Application Team
  * @brief   Header file of I2C HAL module.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
 /* Define to prevent recursive inclusion -------------------------------------*/
 #ifndef __STM32F1xx_HAL_I2C_H
 #define __STM32F1xx_HAL_I2C_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 /* Includes ------------------------------------------------------------------*/
 #include "stm32f1xx_hal_def.h"
 /** @addtogroup STM32F1xx_HAL_Driver
  * @{
  */
 /** @addtogroup I2C
  * @{
  */
 /* Exported types ------------------------------------------------------------*/
 /** @defgroup I2C_Exported_Types I2C Exported Types
  * @{
  */
 /** @defgroup I2C_Configuration_Structure_definition I2C Configuration Structure definition
  * @brief  I2C Configuration Structure definition
  * @{
  */
 typedef struct
 {
  uint32_t ClockSpeed;       /*!< Specifies the clock frequency.
                                  This parameter must be set to a value lower than 400kHz */
  uint32_t DutyCycle;        /*!< Specifies the I2C fast mode duty cycle.
                                  This parameter can be a value of @ref I2C_duty_cycle_in_fast_mode */
  uint32_t OwnAddress1;      /*!< Specifies the first device own address.
                                  This parameter can be a 7-bit or 10-bit address. */
  uint32_t AddressingMode;   /*!< Specifies if 7-bit or 10-bit addressing mode is selected.
                                  This parameter can be a value of @ref I2C_addressing_mode */
  uint32_t DualAddressMode;  /*!< Specifies if dual addressing mode is selected.
                                  This parameter can be a value of @ref I2C_dual_addressing_mode */
  uint32_t OwnAddress2;      /*!< Specifies the second device own address if dual addressing mode is selected
                                  This parameter can be a 7-bit address. */
  uint32_t GeneralCallMode;  /*!< Specifies if general call mode is selected.
                                  This parameter can be a value of @ref I2C_general_call_addressing_mode */
  uint32_t NoStretchMode;    /*!< Specifies if nostretch mode is selected.
                                  This parameter can be a value of @ref I2C_nostretch_mode */
 } I2C_InitTypeDef;
 /**
  * @}
  */
 /** @defgroup HAL_state_structure_definition HAL state structure definition
  * @brief  HAL State structure definition
  * @note  HAL I2C State value coding follow below described bitmap :
  *          b7-b6  Error information
  *             00 : No Error
  *             01 : Abort (Abort user request on going)
  *             10 : Timeout
  *             11 : Error
  *          b5     Peripheral initialization status
  *             0  : Reset (Peripheral not initialized)
  *             1  : Init done (Peripheral initialized and ready to use. HAL I2C Init function called)
  *          b4     (not used)
  *             x  : Should be set to 0
  *          b3
  *             0  : Ready or Busy (No Listen mode ongoing)
  *             1  : Listen (Peripheral in Address Listen Mode)
  *          b2     Intrinsic process state
  *             0  : Ready
  *             1  : Busy (Peripheral busy with some configuration or internal operations)
  *          b1     Rx state
  *             0  : Ready (no Rx operation ongoing)
  *             1  : Busy (Rx operation ongoing)
  *          b0     Tx state
  *             0  : Ready (no Tx operation ongoing)
  *             1  : Busy (Tx operation ongoing)
  * @{
  */
 typedef enum
 {
  HAL_I2C_STATE_RESET             = 0x00U,   /*!< Peripheral is not yet Initialized         */
  HAL_I2C_STATE_READY             = 0x20U,   /*!< Peripheral Initialized and ready for use  */
  HAL_I2C_STATE_BUSY              = 0x24U,   /*!< An internal process is ongoing            */
  HAL_I2C_STATE_BUSY_TX           = 0x21U,   /*!< Data Transmission process is ongoing      */
  HAL_I2C_STATE_BUSY_RX           = 0x22U,   /*!< Data Reception process is ongoing         */
  HAL_I2C_STATE_LISTEN            = 0x28U,   /*!< Address Listen Mode is ongoing            */
  HAL_I2C_STATE_BUSY_TX_LISTEN    = 0x29U,   /*!< Address Listen Mode and Data Transmission
                                                 process is ongoing                         */
  HAL_I2C_STATE_BUSY_RX_LISTEN    = 0x2AU,   /*!< Address Listen Mode and Data Reception
                                                 process is ongoing                         */
  HAL_I2C_STATE_ABORT             = 0x60U,   /*!< Abort user request ongoing                */
  HAL_I2C_STATE_TIMEOUT           = 0xA0U,   /*!< Timeout state                             */
  HAL_I2C_STATE_ERROR             = 0xE0U    /*!< Error                                     */
 } HAL_I2C_StateTypeDef;
 /**
  * @}
  */
 /** @defgroup HAL_mode_structure_definition HAL mode structure definition
  * @brief  HAL Mode structure definition
  * @note  HAL I2C Mode value coding follow below described bitmap :\n
  *          b7     (not used)\n
  *             x  : Should be set to 0\n
  *          b6\n
  *             0  : None\n
  *             1  : Memory (HAL I2C communication is in Memory Mode)\n
  *          b5\n
  *             0  : None\n
  *             1  : Slave (HAL I2C communication is in Slave Mode)\n
  *          b4\n
  *             0  : None\n
  *             1  : Master (HAL I2C communication is in Master Mode)\n
  *          b3-b2-b1-b0  (not used)\n
  *             xxxx : Should be set to 0000
  * @{
  */
 typedef enum
 {
  HAL_I2C_MODE_NONE               = 0x00U,   /*!< No I2C communication on going             */
  HAL_I2C_MODE_MASTER             = 0x10U,   /*!< I2C communication is in Master Mode       */
  HAL_I2C_MODE_SLAVE              = 0x20U,   /*!< I2C communication is in Slave Mode        */
  HAL_I2C_MODE_MEM                = 0x40U    /*!< I2C communication is in Memory Mode       */
 } HAL_I2C_ModeTypeDef;
 /**
  * @}
  */
 /** @defgroup I2C_Error_Code_definition I2C Error Code definition
  * @brief  I2C Error Code definition
  * @{
  */
 #define HAL_I2C_ERROR_NONE              0x00000000U    /*!< No error              */
 #define HAL_I2C_ERROR_BERR              0x00000001U    /*!< BERR error            */
 #define HAL_I2C_ERROR_ARLO              0x00000002U    /*!< ARLO error            */
 #define HAL_I2C_ERROR_AF                0x00000004U    /*!< AF error              */
 #define HAL_I2C_ERROR_OVR               0x00000008U    /*!< OVR error             */
 #define HAL_I2C_ERROR_DMA               0x00000010U    /*!< DMA transfer error    */
 #define HAL_I2C_ERROR_TIMEOUT           0x00000020U    /*!< Timeout Error         */
 #define HAL_I2C_ERROR_SIZE              0x00000040U    /*!< Size Management error */
 #define HAL_I2C_ERROR_DMA_PARAM         0x00000080U    /*!< DMA Parameter Error   */
 #define HAL_I2C_WRONG_START             0x00000200U    /*!< Wrong start Error     */
 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
 #define HAL_I2C_ERROR_INVALID_CALLBACK  0x00000100U    /*!< Invalid Callback error */
 #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
 /**
  * @}
  */
 /** @defgroup I2C_handle_Structure_definition I2C handle Structure definition
  * @brief  I2C handle Structure definition
  * @{
  */
 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
 typedef struct __I2C_HandleTypeDef
 #else
 typedef struct
 #endif  /* USE_HAL_I2C_REGISTER_CALLBACKS */
 {
  I2C_TypeDef                *Instance;      /*!< I2C registers base address               */
  I2C_InitTypeDef            Init;           /*!< I2C communication parameters             */
  uint8_t                    *pBuffPtr;      /*!< Pointer to I2C transfer buffer           */
  uint16_t                   XferSize;       /*!< I2C transfer size                        */
  __IO uint16_t              XferCount;      /*!< I2C transfer counter                     */
  __IO uint32_t              XferOptions;    /*!< I2C transfer options                     */
  __IO uint32_t              PreviousState;  /*!< I2C communication Previous state and mode
                                                  context for internal usage               */
  DMA_HandleTypeDef          *hdmatx;        /*!< I2C Tx DMA handle parameters             */
  DMA_HandleTypeDef          *hdmarx;        /*!< I2C Rx DMA handle parameters             */
  HAL_LockTypeDef            Lock;           /*!< I2C locking object                       */
  __IO HAL_I2C_StateTypeDef  State;          /*!< I2C communication state                  */
  __IO HAL_I2C_ModeTypeDef   Mode;           /*!< I2C communication mode                   */
  __IO uint32_t              ErrorCode;      /*!< I2C Error code                           */
  __IO uint32_t              Devaddress;     /*!< I2C Target device address                */
  __IO uint32_t              Memaddress;     /*!< I2C Target memory address                */
  __IO uint32_t              MemaddSize;     /*!< I2C Target memory address  size          */
  __IO uint32_t              EventCount;     /*!< I2C Event counter                        */
 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
  void (* MasterTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c);           /*!< I2C Master Tx Transfer completed callback */
  void (* MasterRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c);           /*!< I2C Master Rx Transfer completed callback */
  void (* SlaveTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c);            /*!< I2C Slave Tx Transfer completed callback  */
  void (* SlaveRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c);            /*!< I2C Slave Rx Transfer completed callback  */
  void (* ListenCpltCallback)(struct __I2C_HandleTypeDef *hi2c);             /*!< I2C Listen Complete callback              */
  void (* MemTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c);              /*!< I2C Memory Tx Transfer completed callback */
  void (* MemRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c);              /*!< I2C Memory Rx Transfer completed callback */
  void (* ErrorCallback)(struct __I2C_HandleTypeDef *hi2c);                  /*!< I2C Error callback                        */
  void (* AbortCpltCallback)(struct __I2C_HandleTypeDef *hi2c);              /*!< I2C Abort callback                        */
  void (* AddrCallback)(struct __I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode);  /*!< I2C Slave Address Match callback */
  void (* MspInitCallback)(struct __I2C_HandleTypeDef *hi2c);                /*!< I2C Msp Init callback                     */
  void (* MspDeInitCallback)(struct __I2C_HandleTypeDef *hi2c);              /*!< I2C Msp DeInit callback                   */
 #endif  /* USE_HAL_I2C_REGISTER_CALLBACKS */
 } I2C_HandleTypeDef;
 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
 /**
  * @brief  HAL I2C Callback ID enumeration definition
  */
 typedef enum
 {
  HAL_I2C_MASTER_TX_COMPLETE_CB_ID      = 0x00U,    /*!< I2C Master Tx Transfer completed callback ID  */
  HAL_I2C_MASTER_RX_COMPLETE_CB_ID      = 0x01U,    /*!< I2C Master Rx Transfer completed callback ID  */
  HAL_I2C_SLAVE_TX_COMPLETE_CB_ID       = 0x02U,    /*!< I2C Slave Tx Transfer completed callback ID   */
  HAL_I2C_SLAVE_RX_COMPLETE_CB_ID       = 0x03U,    /*!< I2C Slave Rx Transfer completed callback ID   */
  HAL_I2C_LISTEN_COMPLETE_CB_ID         = 0x04U,    /*!< I2C Listen Complete callback ID               */
  HAL_I2C_MEM_TX_COMPLETE_CB_ID         = 0x05U,    /*!< I2C Memory Tx Transfer callback ID            */
  HAL_I2C_MEM_RX_COMPLETE_CB_ID         = 0x06U,    /*!< I2C Memory Rx Transfer completed callback ID  */
  HAL_I2C_ERROR_CB_ID                   = 0x07U,    /*!< I2C Error callback ID                         */
  HAL_I2C_ABORT_CB_ID                   = 0x08U,    /*!< I2C Abort callback ID                         */
  HAL_I2C_MSPINIT_CB_ID                 = 0x09U,    /*!< I2C Msp Init callback ID                      */
  HAL_I2C_MSPDEINIT_CB_ID               = 0x0AU     /*!< I2C Msp DeInit callback ID                    */
 } HAL_I2C_CallbackIDTypeDef;
 /**
  * @brief  HAL I2C Callback pointer definition
  */
 typedef  void (*pI2C_CallbackTypeDef)(I2C_HandleTypeDef *hi2c); /*!< pointer to an I2C callback function */
 typedef  void (*pI2C_AddrCallbackTypeDef)(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode); /*!< pointer to an I2C Address Match callback function */
 #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
 /**
  * @}
  */
 /**
  * @}
  */
 /* Exported constants --------------------------------------------------------*/
 /** @defgroup I2C_Exported_Constants I2C Exported Constants
  * @{
  */
 /** @defgroup I2C_duty_cycle_in_fast_mode I2C duty cycle in fast mode
  * @{
  */
 #define I2C_DUTYCYCLE_2                 0x00000000U
 #define I2C_DUTYCYCLE_16_9              I2C_CCR_DUTY
 /**
  * @}
  */
 /** @defgroup I2C_addressing_mode I2C addressing mode
  * @{
  */
 #define I2C_ADDRESSINGMODE_7BIT         0x00004000U
 #define I2C_ADDRESSINGMODE_10BIT        (I2C_OAR1_ADDMODE | 0x00004000U)
 /**
  * @}
  */
 /** @defgroup I2C_dual_addressing_mode  I2C dual addressing mode
  * @{
  */
 #define I2C_DUALADDRESS_DISABLE        0x00000000U
 #define I2C_DUALADDRESS_ENABLE         I2C_OAR2_ENDUAL
 /**
  * @}
  */
 /** @defgroup I2C_general_call_addressing_mode I2C general call addressing mode
  * @{
  */
 #define I2C_GENERALCALL_DISABLE        0x00000000U
 #define I2C_GENERALCALL_ENABLE         I2C_CR1_ENGC
 /**
  * @}
  */
 /** @defgroup I2C_nostretch_mode I2C nostretch mode
  * @{
  */
 #define I2C_NOSTRETCH_DISABLE          0x00000000U
 #define I2C_NOSTRETCH_ENABLE           I2C_CR1_NOSTRETCH
 /**
  * @}
  */
 /** @defgroup I2C_Memory_Address_Size I2C Memory Address Size
  * @{
  */
 #define I2C_MEMADD_SIZE_8BIT            0x00000001U
 #define I2C_MEMADD_SIZE_16BIT           0x00000010U
 /**
  * @}
  */
 /** @defgroup I2C_XferDirection_definition I2C XferDirection definition
  * @{
  */
 #define I2C_DIRECTION_RECEIVE           0x00000000U
 #define I2C_DIRECTION_TRANSMIT          0x00000001U
 /**
  * @}
  */
 /** @defgroup I2C_XferOptions_definition I2C XferOptions definition
  * @{
  */
 #define  I2C_FIRST_FRAME                0x00000001U
 #define  I2C_FIRST_AND_NEXT_FRAME       0x00000002U
 #define  I2C_NEXT_FRAME                 0x00000004U
 #define  I2C_FIRST_AND_LAST_FRAME       0x00000008U
 #define  I2C_LAST_FRAME_NO_STOP         0x00000010U
 #define  I2C_LAST_FRAME                 0x00000020U
 /* List of XferOptions in usage of :
 * 1- Restart condition in all use cases (direction change or not)
 */
 #define  I2C_OTHER_FRAME                (0x00AA0000U)
 #define  I2C_OTHER_AND_LAST_FRAME       (0xAA000000U)
 /**
  * @}
  */
 /** @defgroup I2C_Interrupt_configuration_definition I2C Interrupt configuration definition
  * @brief I2C Interrupt definition
  *        Elements values convention: 0xXXXXXXXX
  *           - XXXXXXXX  : Interrupt control mask
  * @{
  */
 #define I2C_IT_BUF                      I2C_CR2_ITBUFEN
 #define I2C_IT_EVT                      I2C_CR2_ITEVTEN
 #define I2C_IT_ERR                      I2C_CR2_ITERREN
 /**
  * @}
  */
 /** @defgroup I2C_Flag_definition I2C Flag definition
  * @{
  */
 #define I2C_FLAG_OVR                    0x00010800U
 #define I2C_FLAG_AF                     0x00010400U
 #define I2C_FLAG_ARLO                   0x00010200U
 #define I2C_FLAG_BERR                   0x00010100U
 #define I2C_FLAG_TXE                    0x00010080U
 #define I2C_FLAG_RXNE                   0x00010040U
 #define I2C_FLAG_STOPF                  0x00010010U
 #define I2C_FLAG_ADD10                  0x00010008U
 #define I2C_FLAG_BTF                    0x00010004U
 #define I2C_FLAG_ADDR                   0x00010002U
 #define I2C_FLAG_SB                     0x00010001U
 #define I2C_FLAG_DUALF                  0x00100080U
 #define I2C_FLAG_GENCALL                0x00100010U
 #define I2C_FLAG_TRA                    0x00100004U
 #define I2C_FLAG_BUSY                   0x00100002U
 #define I2C_FLAG_MSL                    0x00100001U
 /**
  * @}
  */
 /**
  * @}
  */
 /* Exported macros -----------------------------------------------------------*/
 /** @defgroup I2C_Exported_Macros I2C Exported Macros
  * @{
  */
 /** @brief Reset I2C handle state.
  * @param  __HANDLE__ specifies the I2C Handle.
  * @retval None
  */
 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
 #define __HAL_I2C_RESET_HANDLE_STATE(__HANDLE__)                do{                                                   \
                                                                    (__HANDLE__)->State = HAL_I2C_STATE_RESET;       \
                                                                    (__HANDLE__)->MspInitCallback = NULL;            \
                                                                    (__HANDLE__)->MspDeInitCallback = NULL;          \
                                                                  } while(0)
 #else
 #define __HAL_I2C_RESET_HANDLE_STATE(__HANDLE__)                ((__HANDLE__)->State = HAL_I2C_STATE_RESET)
 #endif
 /** @brief  Enable or disable the specified I2C interrupts.
  * @param  __HANDLE__ specifies the I2C Handle.
  * @param  __INTERRUPT__ specifies the interrupt source to enable or disable.
  *         This parameter can be one of the following values:
  *            @arg I2C_IT_BUF: Buffer interrupt enable
  *            @arg I2C_IT_EVT: Event interrupt enable
  *            @arg I2C_IT_ERR: Error interrupt enable
  * @retval None
  */
 #define __HAL_I2C_ENABLE_IT(__HANDLE__, __INTERRUPT__)   SET_BIT((__HANDLE__)->Instance->CR2,(__INTERRUPT__))
 #define __HAL_I2C_DISABLE_IT(__HANDLE__, __INTERRUPT__)  CLEAR_BIT((__HANDLE__)->Instance->CR2, (__INTERRUPT__))
 /** @brief  Checks if the specified I2C interrupt source is enabled or disabled.
  * @param  __HANDLE__ specifies the I2C Handle.
  * @param  __INTERRUPT__ specifies the I2C interrupt source to check.
  *          This parameter can be one of the following values:
  *            @arg I2C_IT_BUF: Buffer interrupt enable
  *            @arg I2C_IT_EVT: Event interrupt enable
  *            @arg I2C_IT_ERR: Error interrupt enable
  * @retval The new state of __INTERRUPT__ (TRUE or FALSE).
  */
 #define __HAL_I2C_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->CR2 & (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET)
 /** @brief  Checks whether the specified I2C flag is set or not.
  * @param  __HANDLE__ specifies the I2C Handle.
  * @param  __FLAG__ specifies the flag to check.
  *         This parameter can be one of the following values:
  *            @arg I2C_FLAG_OVR: Overrun/Underrun flag
  *            @arg I2C_FLAG_AF: Acknowledge failure flag
  *            @arg I2C_FLAG_ARLO: Arbitration lost flag
  *            @arg I2C_FLAG_BERR: Bus error flag
  *            @arg I2C_FLAG_TXE: Data register empty flag
  *            @arg I2C_FLAG_RXNE: Data register not empty flag
  *            @arg I2C_FLAG_STOPF: Stop detection flag
  *            @arg I2C_FLAG_ADD10: 10-bit header sent flag
  *            @arg I2C_FLAG_BTF: Byte transfer finished flag
  *            @arg I2C_FLAG_ADDR: Address sent flag
  *                                Address matched flag
  *            @arg I2C_FLAG_SB: Start bit flag
  *            @arg I2C_FLAG_DUALF: Dual flag
  *            @arg I2C_FLAG_GENCALL: General call header flag
  *            @arg I2C_FLAG_TRA: Transmitter/Receiver flag
  *            @arg I2C_FLAG_BUSY: Bus busy flag
  *            @arg I2C_FLAG_MSL: Master/Slave flag
  * @retval The new state of __FLAG__ (TRUE or FALSE).
  */
 #define __HAL_I2C_GET_FLAG(__HANDLE__, __FLAG__) ((((uint8_t)((__FLAG__) >> 16U)) == 0x01U) ? \
                                                  (((((__HANDLE__)->Instance->SR1) & ((__FLAG__) & I2C_FLAG_MASK)) == ((__FLAG__) & I2C_FLAG_MASK)) ? SET : RESET) : \
                                                  (((((__HANDLE__)->Instance->SR2) & ((__FLAG__) & I2C_FLAG_MASK)) == ((__FLAG__) & I2C_FLAG_MASK)) ? SET : RESET))
 /** @brief  Clears the I2C pending flags which are cleared by writing 0 in a specific bit.
  * @param  __HANDLE__ specifies the I2C Handle.
  * @param  __FLAG__ specifies the flag to clear.
  *         This parameter can be any combination of the following values:
  *            @arg I2C_FLAG_OVR: Overrun/Underrun flag (Slave mode)
  *            @arg I2C_FLAG_AF: Acknowledge failure flag
  *            @arg I2C_FLAG_ARLO: Arbitration lost flag (Master mode)
  *            @arg I2C_FLAG_BERR: Bus error flag
  * @retval None
  */
 #define __HAL_I2C_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->SR1 = ~((__FLAG__) & I2C_FLAG_MASK))
 /** @brief  Clears the I2C ADDR pending flag.
  * @param  __HANDLE__ specifies the I2C Handle.
  *         This parameter can be I2C where x: 1, 2, or 3 to select the I2C peripheral.
  * @retval None
  */
 #define __HAL_I2C_CLEAR_ADDRFLAG(__HANDLE__)    \
  do{                                           \
    __IO uint32_t tmpreg = 0x00U;               \
    tmpreg = (__HANDLE__)->Instance->SR1;       \
    tmpreg = (__HANDLE__)->Instance->SR2;       \
    UNUSED(tmpreg);                             \
  } while(0)
 /** @brief  Clears the I2C STOPF pending flag.
  * @param  __HANDLE__ specifies the I2C Handle.
  * @retval None
  */
 #define __HAL_I2C_CLEAR_STOPFLAG(__HANDLE__)           \
  do{                                                  \
    __IO uint32_t tmpreg = 0x00U;                      \
    tmpreg = (__HANDLE__)->Instance->SR1;              \
    SET_BIT((__HANDLE__)->Instance->CR1, I2C_CR1_PE);  \
    UNUSED(tmpreg);                                    \
  } while(0)
 /** @brief  Enable the specified I2C peripheral.
  * @param  __HANDLE__ specifies the I2C Handle.
  * @retval None
  */
 #define __HAL_I2C_ENABLE(__HANDLE__)                  SET_BIT((__HANDLE__)->Instance->CR1, I2C_CR1_PE)
 /** @brief  Disable the specified I2C peripheral.
  * @param  __HANDLE__ specifies the I2C Handle.
  * @retval None
  */
 #define __HAL_I2C_DISABLE(__HANDLE__)                 CLEAR_BIT((__HANDLE__)->Instance->CR1, I2C_CR1_PE)
 /**
  * @}
  */
 /* Exported functions --------------------------------------------------------*/
 /** @addtogroup I2C_Exported_Functions
  * @{
  */
 /** @addtogroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions
  * @{
  */
 /* Initialization and de-initialization functions******************************/
 HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c);
 HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c);
 /* Callbacks Register/UnRegister functions  ***********************************/
 #if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
 HAL_StatusTypeDef HAL_I2C_RegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID, pI2C_CallbackTypeDef pCallback);
 HAL_StatusTypeDef HAL_I2C_UnRegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID);
 HAL_StatusTypeDef HAL_I2C_RegisterAddrCallback(I2C_HandleTypeDef *hi2c, pI2C_AddrCallbackTypeDef pCallback);
 HAL_StatusTypeDef HAL_I2C_UnRegisterAddrCallback(I2C_HandleTypeDef *hi2c);
 #endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
 /**
  * @}
  */
 /** @addtogroup I2C_Exported_Functions_Group2 Input and Output operation functions
  * @{
  */
 /* IO operation functions  ****************************************************/
 /******* Blocking mode: Polling */
 HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout);
 HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout);
 HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout);
 HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout);
 HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout);
 HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout);
 HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout);
 /******* Non-Blocking mode: Interrupt */
 HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
 HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
 HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
 HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
 HAL_StatusTypeDef HAL_I2C_EnableListen_IT(I2C_HandleTypeDef *hi2c);
 HAL_StatusTypeDef HAL_I2C_DisableListen_IT(I2C_HandleTypeDef *hi2c);
 HAL_StatusTypeDef HAL_I2C_Master_Abort_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress);
 /******* Non-Blocking mode: DMA */
 HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
 HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
 HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
 HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
 /**
  * @}
  */
 /** @addtogroup I2C_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks
 * @{
 */
 /******* I2C IRQHandler and Callbacks used in non blocking modes (Interrupt and DMA) */
 void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode);
 void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c);
 void HAL_I2C_AbortCpltCallback(I2C_HandleTypeDef *hi2c);
 /**
  * @}
  */
 /** @addtogroup I2C_Exported_Functions_Group3 Peripheral State, Mode and Error functions
  * @{
  */
 /* Peripheral State, Mode and Error functions  *********************************/
 HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c);
 HAL_I2C_ModeTypeDef HAL_I2C_GetMode(I2C_HandleTypeDef *hi2c);
 uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c);
 /**
  * @}
  */
 /**
  * @}
  */
 /* Private types -------------------------------------------------------------*/
 /* Private variables ---------------------------------------------------------*/
 /* Private constants ---------------------------------------------------------*/
 /** @defgroup I2C_Private_Constants I2C Private Constants
  * @{
  */
 #define I2C_FLAG_MASK                    0x0000FFFFU
 #define I2C_MIN_PCLK_FREQ_STANDARD       2000000U     /*!< 2 MHz                     */
 #define I2C_MIN_PCLK_FREQ_FAST           4000000U     /*!< 4 MHz                     */
 /**
  * @}
  */
 /* Private macros ------------------------------------------------------------*/
 /** @defgroup I2C_Private_Macros I2C Private Macros
  * @{
  */
 #define I2C_MIN_PCLK_FREQ(__PCLK__, __SPEED__)             (((__SPEED__) <= 100000U) ? ((__PCLK__) < I2C_MIN_PCLK_FREQ_STANDARD) : ((__PCLK__) < I2C_MIN_PCLK_FREQ_FAST))
 #define I2C_CCR_CALCULATION(__PCLK__, __SPEED__, __COEFF__)     (((((__PCLK__) - 1U)/((__SPEED__) * (__COEFF__))) + 1U) & I2C_CCR_CCR)
 #define I2C_FREQRANGE(__PCLK__)                            ((__PCLK__)/1000000U)
 #define I2C_RISE_TIME(__FREQRANGE__, __SPEED__)            (((__SPEED__) <= 100000U) ? ((__FREQRANGE__) + 1U) : ((((__FREQRANGE__) * 300U) / 1000U) + 1U))
 #define I2C_SPEED_STANDARD(__PCLK__, __SPEED__)            ((I2C_CCR_CALCULATION((__PCLK__), (__SPEED__), 2U) < 4U)? 4U:I2C_CCR_CALCULATION((__PCLK__), (__SPEED__), 2U))
 #define I2C_SPEED_FAST(__PCLK__, __SPEED__, __DUTYCYCLE__) (((__DUTYCYCLE__) == I2C_DUTYCYCLE_2)? I2C_CCR_CALCULATION((__PCLK__), (__SPEED__), 3U) : (I2C_CCR_CALCULATION((__PCLK__), (__SPEED__), 25U) | I2C_DUTYCYCLE_16_9))
 #define I2C_SPEED(__PCLK__, __SPEED__, __DUTYCYCLE__)      (((__SPEED__) <= 100000U)? (I2C_SPEED_STANDARD((__PCLK__), (__SPEED__))) : \
                                                                  ((I2C_SPEED_FAST((__PCLK__), (__SPEED__), (__DUTYCYCLE__)) & I2C_CCR_CCR) == 0U)? 1U : \
                                                                  ((I2C_SPEED_FAST((__PCLK__), (__SPEED__), (__DUTYCYCLE__))) | I2C_CCR_FS))
 #define I2C_7BIT_ADD_WRITE(__ADDRESS__)                    ((uint8_t)((__ADDRESS__) & (uint8_t)(~I2C_OAR1_ADD0)))
 #define I2C_7BIT_ADD_READ(__ADDRESS__)                     ((uint8_t)((__ADDRESS__) | I2C_OAR1_ADD0))
 #define I2C_10BIT_ADDRESS(__ADDRESS__)                     ((uint8_t)((uint16_t)((__ADDRESS__) & (uint16_t)0x00FF)))
 #define I2C_10BIT_HEADER_WRITE(__ADDRESS__)                ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)0x0300)) >> 7) | (uint16_t)0x00F0)))
 #define I2C_10BIT_HEADER_READ(__ADDRESS__)                 ((uint8_t)((uint16_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)0x0300)) >> 7) | (uint16_t)(0x00F1))))
 #define I2C_MEM_ADD_MSB(__ADDRESS__)                       ((uint8_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)0xFF00)) >> 8)))
 #define I2C_MEM_ADD_LSB(__ADDRESS__)                       ((uint8_t)((uint16_t)((__ADDRESS__) & (uint16_t)0x00FF)))
 /** @defgroup I2C_IS_RTC_Definitions I2C Private macros to check input parameters
  * @{
  */
 #define IS_I2C_DUTY_CYCLE(CYCLE) (((CYCLE) == I2C_DUTYCYCLE_2) || \
                                  ((CYCLE) == I2C_DUTYCYCLE_16_9))
 #define IS_I2C_ADDRESSING_MODE(ADDRESS) (((ADDRESS) == I2C_ADDRESSINGMODE_7BIT) || \
                                         ((ADDRESS) == I2C_ADDRESSINGMODE_10BIT))
 #define IS_I2C_DUAL_ADDRESS(ADDRESS) (((ADDRESS) == I2C_DUALADDRESS_DISABLE) || \
                                      ((ADDRESS) == I2C_DUALADDRESS_ENABLE))
 #define IS_I2C_GENERAL_CALL(CALL) (((CALL) == I2C_GENERALCALL_DISABLE) || \
                                   ((CALL) == I2C_GENERALCALL_ENABLE))
 #define IS_I2C_NO_STRETCH(STRETCH) (((STRETCH) == I2C_NOSTRETCH_DISABLE) || \
                                    ((STRETCH) == I2C_NOSTRETCH_ENABLE))
 #define IS_I2C_MEMADD_SIZE(SIZE) (((SIZE) == I2C_MEMADD_SIZE_8BIT) || \
                                  ((SIZE) == I2C_MEMADD_SIZE_16BIT))
 #define IS_I2C_CLOCK_SPEED(SPEED) (((SPEED) > 0U) && ((SPEED) <= 400000U))
 #define IS_I2C_OWN_ADDRESS1(ADDRESS1) (((ADDRESS1) & 0xFFFFFC00U) == 0U)
 #define IS_I2C_OWN_ADDRESS2(ADDRESS2) (((ADDRESS2) & 0xFFFFFF01U) == 0U)
 #define IS_I2C_TRANSFER_OPTIONS_REQUEST(REQUEST)      (((REQUEST) == I2C_FIRST_FRAME)              || \
                                                       ((REQUEST) == I2C_FIRST_AND_NEXT_FRAME)     || \
                                                       ((REQUEST) == I2C_NEXT_FRAME)               || \
                                                       ((REQUEST) == I2C_FIRST_AND_LAST_FRAME)     || \
                                                       ((REQUEST) == I2C_LAST_FRAME)               || \
                                                       ((REQUEST) == I2C_LAST_FRAME_NO_STOP)       || \
                                                       IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(REQUEST))
 #define IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(REQUEST) (((REQUEST) == I2C_OTHER_FRAME)     || \
                                                        ((REQUEST) == I2C_OTHER_AND_LAST_FRAME))
 #define I2C_CHECK_FLAG(__ISR__, __FLAG__)         ((((__ISR__) & ((__FLAG__) & I2C_FLAG_MASK)) == ((__FLAG__) & I2C_FLAG_MASK)) ? SET : RESET)
 #define I2C_CHECK_IT_SOURCE(__CR1__, __IT__)      ((((__CR1__) & (__IT__)) == (__IT__)) ? SET : RESET)
 /**
  * @}
  */
 /**
  * @}
  */
 /* Private functions ---------------------------------------------------------*/
 /** @defgroup I2C_Private_Functions I2C Private Functions
  * @{
  */
 /**
  * @}
  */
 /**
  * @}
  */
 /**
  * @}
  */
 #ifdef __cplusplus
 }
 #endif
 #endif /* __STM32F1xx_HAL_I2C_H */
--- a/STM32F103C8T6/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_i2c.h
+++ b/STM32F103C8T6/Drivers/STM32F1xx_HAL_Driver/Inc/stm32f1xx_ll_i2c.h
--- a/STM32F103C8T6/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c
+++ b/STM32F103C8T6/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6.uvprojx
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6.uvprojx
@@ -340,7 +340,7 @@
              <MiscControls></MiscControls>
              <Define>USE_HAL_DRIVER,STM32F103xB</Define>
              <Undefine></Undefine>
-              <IncludePath>../Core/Inc;../Drivers/STM32F1xx_HAL_Driver/Inc;../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy;../Drivers/CMSIS/Device/ST/STM32F1xx/Include;../Drivers/CMSIS/Include;../Drivers/BSP/MultiButton;../Drivers/BSP/LCD</IncludePath>
+              <IncludePath>../Core/Inc;../Drivers/STM32F1xx_HAL_Driver/Inc;../Drivers/STM32F1xx_HAL_Driver/Inc/Legacy;../Drivers/CMSIS/Device/ST/STM32F1xx/Include;../Drivers/CMSIS/Include;../Drivers/BSP/MultiButton;../Drivers/BSP/LCD;..\Drivers\BSP\AT24C02</IncludePath>
            </VariousControls>
          </Cads>
          <Aads>
@@ -516,6 +516,62 @@
                </FileArmAds>
              </FileOption>
            </File>
            <File>
              <FileName>i2c.c</FileName>
              <FileType>1</FileType>
              <FilePath>../Core/Src/i2c.c</FilePath>
              <FileOption>
                <CommonProperty>
                  <UseCPPCompiler>2</UseCPPCompiler>
                  <RVCTCodeConst>0</RVCTCodeConst>
                  <RVCTZI>0</RVCTZI>
                  <RVCTOtherData>0</RVCTOtherData>
                  <ModuleSelection>0</ModuleSelection>
                  <IncludeInBuild>1</IncludeInBuild>
                  <AlwaysBuild>2</AlwaysBuild>
                  <GenerateAssemblyFile>2</GenerateAssemblyFile>
                  <AssembleAssemblyFile>2</AssembleAssemblyFile>
                  <PublicsOnly>2</PublicsOnly>
                  <StopOnExitCode>11</StopOnExitCode>
                  <CustomArgument></CustomArgument>
                  <IncludeLibraryModules></IncludeLibraryModules>
                  <ComprImg>1</ComprImg>
                </CommonProperty>
                <FileArmAds>
                  <Cads>
                    <interw>2</interw>
                    <Optim>0</Optim>
                    <oTime>2</oTime>
                    <SplitLS>2</SplitLS>
                    <OneElfS>2</OneElfS>
                    <Strict>2</Strict>
                    <EnumInt>2</EnumInt>
                    <PlainCh>2</PlainCh>
                    <Ropi>2</Ropi>
                    <Rwpi>2</Rwpi>
                    <wLevel>0</wLevel>
                    <uThumb>2</uThumb>
                    <uSurpInc>2</uSurpInc>
                    <uC99>2</uC99>
                    <uGnu>2</uGnu>
                    <useXO>2</useXO>
                    <v6Lang>0</v6Lang>
                    <v6LangP>0</v6LangP>
                    <vShortEn>2</vShortEn>
                    <vShortWch>2</vShortWch>
                    <v6Lto>2</v6Lto>
                    <v6WtE>2</v6WtE>
                    <v6Rtti>2</v6Rtti>
                    <VariousControls>
                      <MiscControls></MiscControls>
                      <Define></Define>
                      <Undefine></Undefine>
                      <IncludePath></IncludePath>
                    </VariousControls>
                  </Cads>
                </FileArmAds>
              </FileOption>
            </File>
            <File>
              <FileName>spi.c</FileName>
              <FileType>1</FileType>
@@ -815,6 +871,62 @@
              <FileType>1</FileType>
              <FilePath>../Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_exti.c</FilePath>
            </File>
            <File>
              <FileName>stm32f1xx_hal_i2c.c</FileName>
              <FileType>1</FileType>
              <FilePath>../Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c</FilePath>
              <FileOption>
                <CommonProperty>
                  <UseCPPCompiler>2</UseCPPCompiler>
                  <RVCTCodeConst>0</RVCTCodeConst>
                  <RVCTZI>0</RVCTZI>
                  <RVCTOtherData>0</RVCTOtherData>
                  <ModuleSelection>0</ModuleSelection>
                  <IncludeInBuild>1</IncludeInBuild>
                  <AlwaysBuild>2</AlwaysBuild>
                  <GenerateAssemblyFile>2</GenerateAssemblyFile>
                  <AssembleAssemblyFile>2</AssembleAssemblyFile>
                  <PublicsOnly>2</PublicsOnly>
                  <StopOnExitCode>11</StopOnExitCode>
                  <CustomArgument></CustomArgument>
                  <IncludeLibraryModules></IncludeLibraryModules>
                  <ComprImg>1</ComprImg>
                </CommonProperty>
                <FileArmAds>
                  <Cads>
                    <interw>2</interw>
                    <Optim>0</Optim>
                    <oTime>2</oTime>
                    <SplitLS>2</SplitLS>
                    <OneElfS>2</OneElfS>
                    <Strict>2</Strict>
                    <EnumInt>2</EnumInt>
                    <PlainCh>2</PlainCh>
                    <Ropi>2</Ropi>
                    <Rwpi>2</Rwpi>
                    <wLevel>0</wLevel>
                    <uThumb>2</uThumb>
                    <uSurpInc>2</uSurpInc>
                    <uC99>2</uC99>
                    <uGnu>2</uGnu>
                    <useXO>2</useXO>
                    <v6Lang>0</v6Lang>
                    <v6LangP>0</v6LangP>
                    <vShortEn>2</vShortEn>
                    <vShortWch>2</vShortWch>
                    <v6Lto>2</v6Lto>
                    <v6WtE>2</v6WtE>
                    <v6Rtti>2</v6Rtti>
                    <VariousControls>
                      <MiscControls></MiscControls>
                      <Define></Define>
                      <Undefine></Undefine>
                      <IncludePath></IncludePath>
                    </VariousControls>
                  </Cads>
                </FileArmAds>
              </FileOption>
            </File>
            <File>
              <FileName>stm32f1xx_hal_spi.c</FileName>
              <FileType>1</FileType>
@@ -1033,6 +1145,11 @@
              <FileType>1</FileType>
              <FilePath>..\Drivers\BSP\MultiButton\multi_button.c</FilePath>
            </File>
            <File>
              <FileName>at24c02.c</FileName>
              <FileType>1</FileType>
              <FilePath>..\Drivers\BSP\AT24C02\at24c02.c</FilePath>
            </File>
          </Files>
        </Group>
        <Group>
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/STM32F103C8T6.lnp
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/STM32F103C8T6.lnp
@@ -4,6 +4,7 @@
 "stm32f103c8t6\gpio.o"
 "stm32f103c8t6\adc.o"
 "stm32f103c8t6\dma.o"
 "stm32f103c8t6\i2c.o"
 "stm32f103c8t6\spi.o"
 "stm32f103c8t6\tim.o"
 "stm32f103c8t6\usart.o"
@@ -22,6 +23,7 @@
 "stm32f103c8t6\stm32f1xx_hal_flash.o"
 "stm32f103c8t6\stm32f1xx_hal_flash_ex.o"
 "stm32f103c8t6\stm32f1xx_hal_exti.o"
 "stm32f103c8t6\stm32f1xx_hal_i2c.o"
 "stm32f103c8t6\stm32f1xx_hal_spi.o"
 "stm32f103c8t6\stm32f1xx_hal_tim.o"
 "stm32f103c8t6\stm32f1xx_hal_tim_ex.o"
@@ -33,6 +35,7 @@
 "stm32f103c8t6\st7735s_1.o"
 "stm32f103c8t6\button_driver_1.o"
 "stm32f103c8t6\multi_button_1.o"
 "stm32f103c8t6\at24c02.o"
 --strict --scatter "STM32F103C8T6\STM32F103C8T6.sct"
 --summary_stderr --info summarysizes --map --load_addr_map_info --xref --callgraph --symbols
 --info sizes --info totals --info unused --info veneers
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/adc.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/adc.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/at24c02.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/at24c02.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/button_driver_1.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/button_driver_1.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/dma.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/dma.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/gpio.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/gpio.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/i2c.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/i2c.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/lcd.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/lcd.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/main.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/main.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/spi.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/spi.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/st7735s_1.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/st7735s_1.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_adc.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_adc.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_adc_ex.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_adc_ex.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_cortex.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_cortex.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_dma.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_dma.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_exti.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_exti.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_flash.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_flash.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_flash_ex.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_flash_ex.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_gpio.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_gpio.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_gpio_ex.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_gpio_ex.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_i2c.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_i2c.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_msp.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_msp.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_pwr.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_pwr.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_rcc.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_rcc.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_rcc_ex.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_rcc_ex.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_spi.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_spi.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_tim.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_tim.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_tim_ex.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_tim_ex.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_uart.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_hal_uart.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_it.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/stm32f1xx_it.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/system_stm32f1xx.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/system_stm32f1xx.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/tim.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/tim.crf
--- a/STM32F103C8T6/MDK-ARM/STM32F103C8T6/usart.crf
+++ b/STM32F103C8T6/MDK-ARM/STM32F103C8T6/usart.crf
--- a/STM32F103C8T6/STM32F103C8T6.ioc
+++ b/STM32F103C8T6/STM32F103C8T6.ioc
@@ -5,7 +5,7 @@ ADC1.Channel-2\#ChannelInjectedConversion=ADC_CHANNEL_1
 ADC1.Channel-3\#ChannelInjectedConversion=ADC_CHANNEL_2
 ADC1.Channel-4\#ChannelInjectedConversion=ADC_CHANNEL_3
 ADC1.EnableInjectedConversion=ENABLE
-ADC1.ExternalTrigInjecConv=ADC_EXTERNALTRIGINJECCONV_T3_CC4
+ADC1.ExternalTrigInjecConv=ADC_EXTERNALTRIGINJECCONV_T4_TRGO
 ADC1.IPParameters=Rank-0\#ChannelRegularConversion,Channel-0\#ChannelRegularConversion,SamplingTime-0\#ChannelRegularConversion,NbrOfConversionFlag,master,EnableInjectedConversion,InjectedRank-1\#ChannelInjectedConversion,Channel-1\#ChannelInjectedConversion,SamplingTime-1\#ChannelInjectedConversion,InjectedOffset-1\#ChannelInjectedConversion,InjectedRank-2\#ChannelInjectedConversion,Channel-2\#ChannelInjectedConversion,SamplingTime-2\#ChannelInjectedConversion,InjectedOffset-2\#ChannelInjectedConversion,InjectedRank-3\#ChannelInjectedConversion,Channel-3\#ChannelInjectedConversion,SamplingTime-3\#ChannelInjectedConversion,InjectedOffset-3\#ChannelInjectedConversion,InjectedRank-4\#ChannelInjectedConversion,Channel-4\#ChannelInjectedConversion,SamplingTime-4\#ChannelInjectedConversion,InjectedOffset-4\#ChannelInjectedConversion,InjNumberOfConversion,ExternalTrigInjecConv
 ADC1.InjNumberOfConversion=4
 ADC1.InjectedOffset-1\#ChannelInjectedConversion=0
@@ -45,46 +45,48 @@ Mcu.CPN=STM32F103C8T6
 Mcu.Family=STM32F1
 Mcu.IP0=ADC1
 Mcu.IP1=DMA
-Mcu.IP2=NVIC
+Mcu.IP2=I2C1
-Mcu.IP3=RCC
+Mcu.IP3=NVIC
-Mcu.IP4=SPI2
+Mcu.IP4=RCC
-Mcu.IP5=SYS
+Mcu.IP5=SPI2
-Mcu.IP6=TIM3
+Mcu.IP6=SYS
-Mcu.IP7=TIM4
+Mcu.IP7=TIM3
-Mcu.IP8=USART1
+Mcu.IP8=TIM4
-Mcu.IPNb=9
+Mcu.IP9=USART1
 Mcu.IPNb=10
 Mcu.Name=STM32F103C(8-B)Tx
 Mcu.Package=LQFP48
 Mcu.Pin0=PC13-TAMPER-RTC
 Mcu.Pin1=PC14-OSC32_IN
-Mcu.Pin10=PB11
+Mcu.Pin10=PA7
-Mcu.Pin11=PB12
+Mcu.Pin11=PB0
-Mcu.Pin12=PB13
+Mcu.Pin12=PB1
-Mcu.Pin13=PB15
+Mcu.Pin13=PB10
-Mcu.Pin14=PA9
+Mcu.Pin14=PB11
-Mcu.Pin15=PA10
+Mcu.Pin15=PB12
-Mcu.Pin16=PA13
+Mcu.Pin16=PB13
-Mcu.Pin17=PA14
+Mcu.Pin17=PB15
-Mcu.Pin18=PB3
+Mcu.Pin18=PA9
-Mcu.Pin19=PB4
+Mcu.Pin19=PA10
 Mcu.Pin2=PC15-OSC32_OUT
-Mcu.Pin20=PB5
+Mcu.Pin20=PA13
-Mcu.Pin21=PB6
+Mcu.Pin21=PA14
-Mcu.Pin22=PB7
+Mcu.Pin22=PB3
-Mcu.Pin23=PB8
+Mcu.Pin23=PB4
-Mcu.Pin24=PB9
+Mcu.Pin24=PB5
-Mcu.Pin25=VP_SYS_VS_Systick
+Mcu.Pin25=PB8
-Mcu.Pin26=VP_TIM3_VS_ClockSourceINT
+Mcu.Pin26=PB9
-Mcu.Pin27=VP_TIM3_VS_no_output4
+Mcu.Pin27=VP_SYS_VS_Systick
-Mcu.Pin28=VP_TIM4_VS_ClockSourceINT
+Mcu.Pin28=VP_TIM3_VS_ClockSourceINT
 Mcu.Pin29=VP_TIM4_VS_ClockSourceINT
 Mcu.Pin3=PD0-OSC_IN
 Mcu.Pin4=PD1-OSC_OUT
 Mcu.Pin5=PA0-WKUP
 Mcu.Pin6=PA1
 Mcu.Pin7=PA2
 Mcu.Pin8=PA3
-Mcu.Pin9=PB10
+Mcu.Pin9=PA6
-Mcu.PinsNb=29
+Mcu.PinsNb=30
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32F103C8Tx
@@ -116,8 +118,16 @@ PA2.Locked=true
 PA2.Signal=ADCx_IN2
 PA3.Locked=true
 PA3.Signal=ADCx_IN3
 PA6.Locked=true
 PA6.Signal=S_TIM3_CH1
 PA7.Locked=true
 PA7.Signal=S_TIM3_CH2
 PA9.Mode=Asynchronous
 PA9.Signal=USART1_TX
 PB0.Locked=true
 PB0.Signal=S_TIM3_CH3
 PB1.Locked=true
 PB1.Signal=S_TIM3_CH4
 PB10.GPIOParameters=GPIO_Speed,GPIO_PuPd,GPIO_Label
 PB10.GPIO_Label=LCD_DC
 PB10.GPIO_PuPd=GPIO_PULLUP
@@ -158,14 +168,12 @@ PB5.GPIO_Label=KEY2
 PB5.GPIO_PuPd=GPIO_PULLDOWN
 PB5.Locked=true
 PB5.Signal=GPIO_Input
 PB6.Locked=true
 PB6.Signal=S_TIM4_CH1
 PB7.Locked=true
 PB7.Signal=S_TIM4_CH2
 PB8.Locked=true
-PB8.Signal=S_TIM4_CH3
+PB8.Mode=I2C
 PB8.Signal=I2C1_SCL
 PB9.Locked=true
-PB9.Signal=S_TIM4_CH4
+PB9.Mode=I2C
 PB9.Signal=I2C1_SDA
 PC13-TAMPER-RTC.GPIOParameters=GPIO_Speed,PinState,GPIO_PuPd,GPIO_Label
 PC13-TAMPER-RTC.GPIO_Label=LED
 PC13-TAMPER-RTC.GPIO_PuPd=GPIO_PULLUP
@@ -229,7 +237,8 @@ ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=false
 ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_USART1_UART_Init-USART1-false-HAL-true,5-MX_SPI2_Init-SPI2-false-HAL-true,6-MX_TIM4_Init-TIM4-false-HAL-true,7-MX_ADC1_Init-ADC1-false-HAL-true,8-MX_TIM3_Init-TIM3-false-HAL-true
-RCC.ADCFreqValue=36000000
+RCC.ADCFreqValue=12000000
 RCC.ADCPresc=RCC_ADCPCLK2_DIV6
 RCC.AHBFreq_Value=72000000
 RCC.APB1CLKDivider=RCC_HCLK_DIV2
 RCC.APB1Freq_Value=36000000
@@ -239,7 +248,7 @@ RCC.APB2TimFreq_Value=72000000
 RCC.FCLKCortexFreq_Value=72000000
 RCC.FamilyName=M
 RCC.HCLKFreq_Value=72000000
-RCC.IPParameters=ADCFreqValue,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2Freq_Value,APB2TimFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,MCOFreq_Value,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLMUL,PLLSourceVirtual,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value,VCOOutput2Freq_Value
+RCC.IPParameters=ADCFreqValue,ADCPresc,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2Freq_Value,APB2TimFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,MCOFreq_Value,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLMUL,PLLSourceVirtual,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value,VCOOutput2Freq_Value
 RCC.MCOFreq_Value=72000000
 RCC.PLLCLKFreq_Value=72000000
 RCC.PLLMCOFreq_Value=36000000
@@ -258,14 +267,14 @@ SH.ADCx_IN2.0=ADC1_IN2,IN2
 SH.ADCx_IN2.ConfNb=1
 SH.ADCx_IN3.0=ADC1_IN3,IN3
 SH.ADCx_IN3.ConfNb=1
-SH.S_TIM4_CH1.0=TIM4_CH1,PWM Generation1 CH1
+SH.S_TIM3_CH1.0=TIM3_CH1,PWM Generation1 CH1
-SH.S_TIM4_CH1.ConfNb=1
+SH.S_TIM3_CH1.ConfNb=1
-SH.S_TIM4_CH2.0=TIM4_CH2,PWM Generation2 CH2
+SH.S_TIM3_CH2.0=TIM3_CH2,PWM Generation2 CH2
-SH.S_TIM4_CH2.ConfNb=1
+SH.S_TIM3_CH2.ConfNb=1
-SH.S_TIM4_CH3.0=TIM4_CH3,PWM Generation3 CH3
+SH.S_TIM3_CH3.0=TIM3_CH3,PWM Generation3 CH3
-SH.S_TIM4_CH3.ConfNb=1
+SH.S_TIM3_CH3.ConfNb=1
-SH.S_TIM4_CH4.0=TIM4_CH4,PWM Generation4 CH4
+SH.S_TIM3_CH4.0=TIM3_CH4,PWM Generation4 CH4
-SH.S_TIM4_CH4.ConfNb=1
+SH.S_TIM3_CH4.ConfNb=1
 SPI2.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_2
 SPI2.CLKPhase=SPI_PHASE_2EDGE
 SPI2.CLKPolarity=SPI_POLARITY_HIGH
@@ -275,30 +284,28 @@ SPI2.IPParameters=VirtualType,Mode,Direction,CalculateBaudRate,BaudRatePrescaler
 SPI2.Mode=SPI_MODE_MASTER
 SPI2.VirtualType=VM_MASTER
 TIM3.AutoReloadPreload=TIM_AUTORELOAD_PRELOAD_ENABLE
-TIM3.Channel-PWM\ Generation4\ No\ Output=TIM_CHANNEL_4
+TIM3.Channel-PWM\ Generation1\ CH1=TIM_CHANNEL_1
-TIM3.IPParameters=Prescaler,Period,AutoReloadPreload,Channel-PWM Generation4 No Output,Pulse-PWM Generation4 No Output
+TIM3.Channel-PWM\ Generation2\ CH2=TIM_CHANNEL_2
 TIM3.Channel-PWM\ Generation3\ CH3=TIM_CHANNEL_3
 TIM3.Channel-PWM\ Generation4\ CH4=TIM_CHANNEL_4
 TIM3.IPParameters=Prescaler,Period,AutoReloadPreload,Channel-PWM Generation1 CH1,Channel-PWM Generation2 CH2,Channel-PWM Generation3 CH3,Channel-PWM Generation4 CH4,Pulse-PWM Generation2 CH2,Pulse-PWM Generation1 CH1,Pulse-PWM Generation3 CH3
 TIM3.Period=999
 TIM3.Prescaler=71
-TIM3.Pulse-PWM\ Generation4\ No\ Output=500
+TIM3.Pulse-PWM\ Generation1\ CH1=500
 TIM3.Pulse-PWM\ Generation2\ CH2=500
 TIM3.Pulse-PWM\ Generation3\ CH3=500
 TIM4.AutoReloadPreload=TIM_AUTORELOAD_PRELOAD_ENABLE
-TIM4.Channel-PWM\ Generation1\ CH1=TIM_CHANNEL_1
+TIM4.IPParameters=Prescaler,Period,AutoReloadPreload,TIM_MasterSlaveMode,TIM_MasterOutputTrigger
 TIM4.Channel-PWM\ Generation2\ CH2=TIM_CHANNEL_2
 TIM4.Channel-PWM\ Generation3\ CH3=TIM_CHANNEL_3
 TIM4.Channel-PWM\ Generation4\ CH4=TIM_CHANNEL_4
 TIM4.IPParameters=Prescaler,Period,AutoReloadPreload,Channel-PWM Generation1 CH1,Channel-PWM Generation2 CH2,Channel-PWM Generation3 CH3,Channel-PWM Generation4 CH4,Pulse-PWM Generation4 CH4,Pulse-PWM Generation1 CH1,Pulse-PWM Generation2 CH2
 TIM4.Period=999
 TIM4.Prescaler=71
-TIM4.Pulse-PWM\ Generation1\ CH1=500
+TIM4.TIM_MasterOutputTrigger=TIM_TRGO_UPDATE
-TIM4.Pulse-PWM\ Generation2\ CH2=500
+TIM4.TIM_MasterSlaveMode=TIM_MASTERSLAVEMODE_ENABLE
 TIM4.Pulse-PWM\ Generation4\ CH4=500
 USART1.IPParameters=VirtualMode
 USART1.VirtualMode=VM_ASYNC
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
 VP_TIM3_VS_ClockSourceINT.Mode=Internal
 VP_TIM3_VS_ClockSourceINT.Signal=TIM3_VS_ClockSourceINT
 VP_TIM3_VS_no_output4.Mode=PWM Generation4 No Output
 VP_TIM3_VS_no_output4.Signal=TIM3_VS_no_output4
 VP_TIM4_VS_ClockSourceINT.Mode=Internal
 VP_TIM4_VS_ClockSourceINT.Signal=TIM4_VS_ClockSourceINT
 board=custom