/* 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 "adc.h"
#include "dma.h"
#include "i2c.h"
#include "spi.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include "button_driver.h"
#include "st7735s.h"
#include "lcd.h"
#include "at24c02.h"

/* 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 */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(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 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */
  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */
  /* ADC 时钟预分频：PCLK2 / 6 = 72/6 = 12MHz */
  /* 默认 /2=36MHz 超过 14MHz 规格，ADC 无法正常工作 */
  RCC->CFGR = (RCC->CFGR & ~RCC_CFGR_ADCPRE) | RCC_CFGR_ADCPRE_DIV6;
  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_USART1_UART_Init();
  MX_SPI2_Init();
  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();
  st7735s_init();
  st7735s_fill_screen(COLOR_RED);
  HAL_Delay(500);
  st7735s_fill_screen(COLOR_BLACK);
  lcd_draw_string(0, 0, "01234", COLOR_WHITE, COLOR_BLACK);
  lcd_draw_string(0, 16, "LCD_OK", COLOR_WHITE, COLOR_BLACK);
  
  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 TIM3 四路 PWM（PA6 CH1, PA7 CH2, PB0 CH3, PB1 CH4） */
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_2);
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_3);
  HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_4);

  /* 设置占空比（0~999 对应 0%~100%） */
  __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_1, 500);  /* 50% */
  __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 250);  /* 25% */
  __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 750);  /* 75% */
  __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);
  if (HAL_ADC_PollForConversion(&hadc1, 100) == HAL_OK) {
      printf("ADC REG TEST: %d\r\n", HAL_ADC_GetValue(&hadc1));
  }
  HAL_ADC_Stop(&hadc1);

  /* 启动 TIM4（TRGO = Update，1kHz 触发 ADC1 注入组） */
  HAL_TIM_Base_Start(&htim4);

  /* 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 */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
    HAL_Delay(1000);
    HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);

    /* 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);
    uint16_t adc3 = HAL_ADCEx_InjectedGetValue(&hadc1, ADC_INJECTED_RANK_4);
    printf("ADC: %4d %4d %4d %4d\r\n", adc0, adc1, adc2, adc3);
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  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_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
  PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @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 */