/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : main.c
 * @brief          : Main program body
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; Copyright (c) 2024 STMicroelectronics.
 * All rights reserved.</center></h2>
 *
 * This software component is licensed by ST under BSD 3-Clause license,
 * the "License"; You may not use this file except in compliance with the
 * License. You may obtain a copy of the License at:
 *                        opensource.org/licenses/BSD-3-Clause
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "i2c.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

#include "stdio.h"
#include "stm32f1xx_hal.h"

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

#define WIFI_SSID "AILA"
#define WIFI_PASSWORD "77777777"
#define SERVER_IP "112.74.107.30"
#define SERVER_PORT 9008
#define TX_BUFFER_SIZE 512

#define DHT11_PIN GPIO_PIN_0
#define DHT11_PORT GPIOA

uint8_t humidity = 0, temperature = 0;

void Delay_us(uint16_t us)
{
  uint16_t differ = 0xffff - us - 5;
  __HAL_TIM_SET_COUNTER(&htim1, differ);
  HAL_TIM_Base_Start(&htim1);

  while (differ < 0xffff - 5)
  {
    differ = __HAL_TIM_GET_COUNTER(&htim1);
  }
  HAL_TIM_Base_Stop(&htim1);
}

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
uint8_t txBuffer[TX_BUFFER_SIZE];

void sendATCommand(char *command, uint16_t timeout)
{
  HAL_UART_Transmit(&huart2, (uint8_t *)command, strlen(command), HAL_MAX_DELAY);
  HAL_Delay(timeout);
}

void ESP8266_Init()
{
  sendATCommand("AT+RST\r\n", 2000);
  sendATCommand("AT+CWMODE=1\r\n", 1000);
  snprintf((char *)txBuffer, TX_BUFFER_SIZE, "AT+CWJAP=\"%s\",\"%s\"\r\n", WIFI_SSID, WIFI_PASSWORD);
  sendATCommand((char *)txBuffer, 5000);
  snprintf((char *)txBuffer, TX_BUFFER_SIZE, "AT+CIPSTART=\"TCP\",\"%s\",%d\r\n", SERVER_IP, SERVER_PORT);
  sendATCommand((char *)txBuffer, 3000);
}

void ESP8266_SendData(char *data)
{
  snprintf((char *)txBuffer, TX_BUFFER_SIZE, "AT+CIPSEND=%d\r\n", strlen(data));
  sendATCommand((char *)txBuffer, 1000);
  HAL_UART_Transmit(&huart2, (uint8_t *)data, strlen(data), HAL_MAX_DELAY);
  HAL_Delay(1000);
}

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
uint8_t Data[5] = {0x00, 0x00, 0x00, 0x00, 0x00};
/*------------------------------*/
void DHT_GPIO_SET_OUTPUT(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  GPIO_InitStructure.Pin = GPIO_PIN_0;
  GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void DHT_GPIO_SET_INPUT(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  GPIO_InitStructure.Pin = GPIO_PIN_0;
  GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
  GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
}

/*------------------------------*/

uint8_t DHT_Read_Byte(void) 
{
  uint8_t ReadData = 0; 
  uint8_t temp;       
  uint8_t retry = 0;    
  uint8_t i;
  for (i = 0; i < 8; i++) 
  {
    while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) == 0 && retry < 100)
    {
      Delay_us(1);
      retry++; 
    }
    retry = 0;

    Delay_us(40); 
    if (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) == 1)
      temp = 1;
    else
      temp = 0;

    while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) == 1 && retry < 100)
    {
      Delay_us(1);
      retry++;
    }
    retry = 0;

    ReadData <<= 1;   
    ReadData |= temp; 
  }

  return ReadData;
}

/*------------------------------*/

/*
     uint8_t DHT_Read(void)表达完整时序
*/
uint8_t DHT_Read(void)
{
  uint8_t retry = 0;
  uint8_t i;

  DHT_GPIO_SET_OUTPUT();                      
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_RESET); 
  HAL_Delay(18);
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_SET); 
  Delay_us(20);


  DHT_GPIO_SET_INPUT();
  Delay_us(20);
  if (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) == 0) 
  {
    while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) == 0 && retry < 100)
    {
      Delay_us(1);
      retry++;
    }
    retry = 0;
    while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0) == 1 && retry < 100)
    {
      Delay_us(1);
      retry++;
    }
    retry = 0;

    for (i = 0; i < 5; i++)
    {
      Data[i] = DHT_Read_Byte(); 
    }
    Delay_us(50);
  }

  uint32_t sum = Data[0] + Data[1] + Data[2] + Data[3]; // 校验
  if ((sum) == Data[4])
    return 1;
  else
    return 0;
}

/* USER CODE END PM */

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

/* USER CODE BEGIN PV */

uint32_t adc_value = 0;





/* 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 */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  MX_USART2_UART_Init();
  MX_USART3_UART_Init();
  MX_ADC1_Init();
  MX_I2C1_Init();
  MX_TIM1_Init();
  /* USER CODE BEGIN 2 */

  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, GPIO_PIN_SET);
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET);

  ESP8266_Init();

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_SET);
    HAL_Delay(1000);
    HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);
    HAL_Delay(1000);

    if (DHT_Read())
    {
      humidity = Data[0];    // 更新湿度
      temperature = Data[2]; // 更新温度
    }

HAL_ADC_Start(&hadc1); // 开始ADC转换
if (HAL_ADC_PollForConversion(&hadc1, 10) == HAL_OK) // 等待转换完成，超时时间10ms
{
    adc_value = HAL_ADC_GetValue(&hadc1); // 获取ADC值
}
HAL_ADC_Stop(&hadc1); // 停止ADC


    char jsonData[TX_BUFFER_SIZE];
    snprintf(jsonData, TX_BUFFER_SIZE, "{\"MODEL\":\"AIR100\",\"IMEI\":\"JkyAir000000099\",\"PM25\":\"16\",\"PM1\":\"11\",\"PM10\":\"15\",\"CO2\":\"320\",\"HCHO\":\"%d\",\"TEMP\":\"%d\",\"TVOC\":\"0.06\",\"HUMI\":\"%d\",\"TIME\":\"2019-06-04 11:44:04\",\"VER\":\"0.9\"}", adc_value, temperature, humidity);

    ESP8266_SendData(jsonData);

    /* 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};
  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 */

void CE_CO2_nonfud()
{
}
/* 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 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/