Files
STM32F4-Base/Src/main.c
T
wandering1 9bbe117f97 adc: 节拍源 TIM6->TIM3 + ADC1 走 DMA 乒乓双缓冲,消除 2 ms 忙等(P1-5 单拍硬上界办结)
用户选定最彻底方案(B2):DMA + 定时器 TRGO 硬件触发 + 消费上一拍
已完成的半区。对应 P1-5 拆出的"单拍硬上界",现已办结。

硬件事实更正(查 CubeMX 器件库 + 本仓 HAL 头证实):F4 上 ADC1 的
外部触发清单里没有 TIM6/TIM7 TRGO(只接 DAC)。故 1 kHz 节拍源由
TIM6 改为 TIM3(PSC 83 / ARR 999,TRGO=UPDATE),同一个更新事件
同时 ① ISR 脉冲 TPAFE CONVST ② 经 TRGO 触发 ADC1 一轮 9 通道
③ 置位 ADC_WAKE_FLAG 唤醒 adcTask。TIM6 从 .ioc 整体移除。

代码:
- Src/tim.c/h:新增 MX_TIM3_Init(含 MasterSlaveMode),删 htim6
- Src/adc.c:ExternalTrigConv=T3_TRGO + EDGE_RISING +
  DMAContinuousRequests=ENABLE;MspInit 挂 hdma_adc1(DMA2_Stream4
  循环模式)。DDS 位关掉 = 一轮只发一次请求,静默丢 8 路
- Src/dma.c:DMA2_Stream4 NVIC 优先级 6(CubeMX 换流会把它重置为 0,
  优先级 0 会抢占 FreeRTOS 临界区,违反"外设中断 ≥5")
- Src/main.c:周期回调加 TIM3 分支;stm32f4xx_it.c 向量同步
- App/algo/adc_input.c:stm32_scan() → stm32_take(),逐通道
  PollForConversion 全删;乒乓半区由完成计数奇偶推出(只读一个
  32 位量 → 与 ISR 无竞态);STM32 侧数据固定滞后 1 拍
- App/task/adc_task.c:心跳日志拆出四类计数

观测性:adc1_seq(完成计数)/ adc1_gap(seq 前进 >1 = 丢帧)/
adc1_err(连续 ≥2 拍无新帧 = 停摆)/ adc1_hw(HAL 错误回调)。
单拍无新帧是消费者相位伪影(DMA 完成落在唤醒后 ≈67 µs),不计故障。

验证:
- 主机单测 79 → 101 全绿;反向验证四连均咬(半区奇偶取反 11 条、
  停摆拍置 valid 4 条、STALL_RUN_MAX 改 1 为 6 条、gap 阈值 1 条)
- @build 0 错 0 警,Code 256872 → 257660
- @test PASS:adcp 122 µs → 8 µs、adc1_err=0、adc1_hw=0、
  adc1_gap=27/20002 拍、adc1_seq 与 seq 恒定偏移 2
- stack_report 7/7 PASS,adcTask 832 B / 余 59%(不变)
- cubemx-survival 新增 5 项审计(TIM3 分支 / T3_TRGO / DDS /
  DMA 挂载 / 流优先级),28 通过 0 失败

文档:ADC 采样节拍设计说明新增 §11;看门狗停摆分析 §4.4 与 §8 收口;
算法规划 L1-1/L1-3、通道映射、测试说明、各 README 同步。
2026-10-11 00:31:33 +08:00

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @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 "main.h"
#include "cmsis_os.h"
#include "adc.h"
#include "dma.h"
#include "i2c.h"
#include "iwdg.h"
#include "spi.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <string.h>
#include <stdio.h>
#include "ch395f.h"
#include "gd5f2gq5ue.h"
#include "tpafe5160.h"
#include "sd2506.h"
#include "rs485.h"
#include "net_socket.h"
#include "net_select.h"
#include "app_main.h"
#include "sys_clock.h"
#include "task_watchdog.h" /* task_wd_tick_probe():round 8b 时间源存活性取证 */
#include "adc_task.h" /* adc_tick_irq_notify():TIM6 节拍 → 唤醒 adcTask(P1-5 方案 a) */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
#define DBG_TAG "[MAIN]"
#include "dbg_log.h"
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* RS-485 实例与接收缓冲已收归 rs485.c(见 rs485.h 的 extern 导出) */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void MX_FREERTOS_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* round 8b 取证:**必须在 HAL_Init() 之前**把上一轮的"时间源存活性"终值
* 快照到 .noinit 的 prev 槽——TIM7 在 HAL_Init 里就 HAL_TIM_Base_Start_IT
* 开始 1ms 中断,而开机上报要到 app_main_init(≈117ms)才跑;不先搬走,
* 上一轮终值会被本轮开机瞬间的 tick 覆盖(见 docs/子系统设计/看门狗设计说明.md 2026-10-02 变更记录)。 */
task_wd_tick_snapshot();
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* 复位原因锁存(2026-09-29,配合 IWDG):RCC_CSR 的复位标志只由上电复位(POR)
* 清除,其余复位(看门狗/软件/引脚/欠压)会跨复位保留——若不主动清除,
* 上一次的 IWDGRSTF 会一直挂着,导致每次启动都被误记为"看门狗复位"。
* 故在 HAL_Init()(此时 RCC 可用、串口尚未就绪)之后**立即读取并清除**,
* 锁存到 RCC_CSR 影子变量,待日志子系统起来后由 app_main_init 打印。
* 注意顺序:读 → 写 RMVF 清除,两步之间不可插入其它可能复位的代码。 */
{
extern volatile uint32_t g_rcc_csr_latched; /* 定义于 app_main.c,供启动日志读取 */
g_rcc_csr_latched = RCC->CSR; /* 锁存:含 IWDGRSTF/SFTRSTF/PORRSTF 等 */
RCC->CSR |= RCC_CSR_RMVF; /* 写 1 清全部复位标志(只清标志,不影响时钟) */
}
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_USART1_UART_Init();
MX_SPI2_Init();
MX_SPI1_Init();
MX_I2C1_Init();
MX_UART4_Init();
MX_UART5_Init();
MX_USART2_UART_Init();
MX_USART3_UART_Init();
MX_IWDG_Init();
MX_ADC1_Init();
MX_TIM3_Init();
/* USER CODE BEGIN 2 */
HAL_Delay(100);
/* 应用层初始化(时间子系统优先,详见 app_main_init) */
app_main_init();
/* USER CODE END 2 */
/* Init scheduler */
osKernelInitialize(); /* Call init function for freertos objects (in cmsis_os2.c) */
MX_FREERTOS_Init();
/* Start scheduler */
osKernelStart();
/* We should never get here as control is now taken by the scheduler */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 4;
RCC_OscInitStruct.PLL.PLLN = 168;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 4;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
/*
* RS-485 的 HAL UART 回调(HAL_UARTEx_RxEventCallback / HAL_UART_ErrorCallback)
* 已收归 rs485.c 实现,本文件不再定义它们。如需处理接收到的 RS-485 数据,
* 请重定义 rs485.h 中的弱钩子 rs485_on_rx(uint8_t *buf, uint16_t size)。
*/
/* USER CODE END 4 */
/**
* @brief Period elapsed callback in non blocking mode
* @note This function is called when TIM7 interrupt took place, inside
* HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
* a global variable "uwTick" used as application time base.
* @param htim : TIM handle
* @retval None
*/
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
/* USER CODE BEGIN Callback 0 */
/* USER CODE END Callback 0 */
if (htim->Instance == TIM7)
{
HAL_IncTick();
}
/* USER CODE BEGIN Callback 1 */
/* round 8b 取证:TIM7 每 1ms 把"时间源存活性"写进复位不丢的 .noinit 槽
* (uwTick + 中断计数)。复位后由 task_wd_seg_report() 打 TICKRUN 行,
* 与"进段打点"时刻对比,判定 TIM7(HAL 时基)是否在冻结同刻停摆
* (见 docs/子系统设计/看门狗设计说明.md 2026-10-02 变更记录)。
* ⚠ task_wd_tick_probe() 内不得调用任何 FreeRTOS API:TIM7 在 HAL_Init
* 阶段即开始中断,远早于调度器启动,此时 ISR 版内核 API 会触发 port.c 的
* 优先级断言并把系统卡死在本 ISR 内(2026-10-02 台架实测)。
* 放 USER CODE 区(L2):CubeMX 重生成不丢。 */
if (htim->Instance == TIM7)
{
task_wd_tick_probe();
}
/* 1 kHz 采样节拍:TIM3 更新事件内脉冲 CONVST(仅两次 GPIO 写,亚 µs),
* 再唤醒 adcTask 消费这一拍(Task #32 P1-5 方案 a:ISR 只发唤醒,计算全留在任务)。
* 同一个更新事件还经 TRGO 硬件触发 STM32 ADC1 一轮 9 通道转换(DMA 自动搬运)
* → 两片转换器由同一硬件事件驱动,采样时刻对齐。
* TIM3 与 BUSY EXTI(EXTI9_5_IRQn) 同为抢占优先级 6 → 互不抢占,
* 读 RD 时序不会被下一次 CONVST 脉冲打断。详见
* docs/子系统设计/ADC采样节拍设计说明.md §10。放 USER CODE 区(L2)。
* ⚠ 节拍源 v2.0 由 TIM6 改为 TIM3:F4 上 ADC1 的外部触发清单里没有 TIM6 TRGO
* (TIM6/TIM7 的 TRGO 只接 DAC),详见 App/app/app_main.c 步骤 6 注释。
* ⚠ 唤醒必须走 adc_tick_irq_notify(),**不要**在这里直接 osThreadFlagsSet:
* TIM3 在 app_main_init() 就启动,远早于建任务与 osKernelStart,
* "消费者就绪"门在 adc_task.c 里(同本文件 TIM7 分支 2026-10-02 的实测坑)。 */
if (htim->Instance == TIM3)
{
tpafe5160_start_conv_irq();
adc_tick_irq_notify();
}
/* USER CODE END Callback 1 */
}
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */