API tools faq
paste
Guest User

Untitled

a guest
Nov 28th, 2019
309
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
C 9.98 KB | None | 0 0
raw download clone embed print report
  1. /* USER CODE BEGIN Header */
  2. /**
  3.   **************************
  4.   * @file           : main.c
  5.   * @brief          : Main program body
  6.   **************************
  7.   * @attention
  8.   *
  9.   * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
  10.   * All rights reserved.</center></h2>
  11.   *
  12.   * This software component is licensed by ST under BSD 3-Clause license,
  13.   * the "License"; You may not use this file except in compliance with the
  14.   * License. You may obtain a copy of the License at:
  15.   *                        opensource.org/licenses/BSD-3-Clause
  16.   *
  17.   **************************
  18.   */
  19. /* USER CODE END Header */
  20.  
  21. /* Includes ------------------------------------------------------------------*/
  22. #include "main.h"
  23.  
  24. /* Private includes ----------------------------------------------------------*/
  25. /* USER CODE BEGIN Includes */
  26. #include "main.h"
  27. #include "stdio.h"
  28. #include "string.h"
  29. /* USER CODE END Includes */
  30.  
  31. /* Private typedef -----------------------------------------------------------*/
  32. /* USER CODE BEGIN PTD */
  33.  
  34. /* USER CODE END PTD */
  35.  
  36. /* Private define ------------------------------------------------------------*/
  37. /* USER CODE BEGIN PD */
  38. /* USER CODE END PD */
  39.  
  40. /* Private macro -------------------------------------------------------------*/
  41. /* USER CODE BEGIN PM */
  42.  
  43. /* USER CODE END PM */
  44.  
  45. /* Private variables ---------------------------------------------------------*/
  46. UART_HandleTypeDef huart1;
  47.  
  48. /* USER CODE BEGIN PV */
  49. uint8_t Rh_byte1, Rh_byte2, Temp_byte1, Temp_byte2,sum;
  50. uint16_t  RH, TEMP, a;
  51. char str[50]="";
  52. /* USER CODE END PV */
  53.  
  54. /* Private function prototypes -----------------------------------------------*/
  55. void SystemClock_Config(void);
  56. static void MX_GPIO_Init(void);
  57. static void MX_USART1_UART_Init(void);
  58. /* USER CODE BEGIN PFP */
  59.  
  60. /* USER CODE END PFP */
  61.  
  62. /* Private user code ---------------------------------------------------------*/
  63. /* USER CODE BEGIN 0 */
  64. void delay_ticks(uint32_t ticks)
  65.  { //SYSTICK TIMER 24 BIT
  66.      SysTick->LOAD = ticks;
  67.      SysTick->VAL = 0;
  68.      SysTick->CTRL = SysTick_CTRL_ENABLE_Msk;
  69.      SysTick->CTRL &= ~SYSTICK_CLKSOURCE_HCLK_DIV8;
  70.      SysTick->CTRL |= SYSTICK_CLKSOURCE_HCLK;
  71.      // COUNTFLAG is a bit that is set to 1 when counter reaches 0.
  72.      // It's automatically cleared when read.
  73.      while ((SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk) == 0);
  74.      SysTick->CTRL = 0;
  75.  }
  76. //238 766
  77.  //delaylere fazla guvenme
  78.  void delay_us(uint32_t us)
  79.  {
  80.      delay_ticks(us * 8);
  81.  }
  82.  
  83.  static inline void delay_ms(uint32_t ms)
  84.   {
  85.       delay_ticks(ms * 8000);
  86.   }
  87.  
  88.  GPIO_InitTypeDef GPIO_InitStruct = {0};
  89.  void set_gpio_input (void)
  90.   {
  91.   GPIO_InitStruct.Pin = GPIO_PIN_5;
  92.   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  93.   GPIO_InitStruct.Pull = GPIO_NOPULL;
  94.   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  95.   }
  96.  
  97.   /*Configure GPIO pin : PA2 */
  98.   void set_gpio_output (void)
  99.   {
  100.   GPIO_InitStruct.Pin = GPIO_PIN_5;
  101.   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  102.   GPIO_InitStruct.Pull = GPIO_NOPULL;
  103.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  104.   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  105.   }
  106.  
  107.  
  108. void DHT22_start (void)
  109. {
  110.     set_gpio_output ();  // set the pin as output
  111.     HAL_GPIO_WritePin (GPIOA, GPIO_PIN_5, 0);   // pull the pin low
  112.     delay_us(500);   // wait for 500us
  113.     HAL_GPIO_WritePin (GPIOA, GPIO_PIN_5, 1);   // pull the pin high
  114.     delay_us(30);   // wait for 30us
  115.     set_gpio_input ();   // set as input
  116. }
  117.  
  118. void check_response (void)
  119. {
  120.      delay_us(40);
  121.     if (!(HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_5)))
  122.     {
  123.         delay_us (80);
  124.     }
  125.     while ((HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_5)));   // wait for the pin to go low
  126. }
  127.  
  128. uint8_t read_data (void)
  129. {
  130.     uint8_t i,j;
  131.     for (j=0;j<8;j++)
  132.     {
  133.         while (!(HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_5)));   // wait for the pin to go high
  134.         delay_us(40);   // wait for 40 us
  135.         if ((HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_5)) == 0)   // if the pin is low
  136.         {
  137.             i&= ~(1<<(7-j));   // write 0
  138.         }
  139.         else i|= (1<<(7-j));  // if the pin is high, write 1
  140.  
  141.  
  142.         while (HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_5));
  143.  
  144.     }
  145.     return i;
  146. }
  147.  
  148.  
  149. /* USER CODE END 0 */
  150.  
  151. /**
  152.   * @brief  The application entry point.
  153.   * @retval int
  154.   */
  155. int main(void)
  156. {
  157.   /* USER CODE BEGIN 1 */
  158.  
  159.   /* USER CODE END 1 */
  160.  
  161.  
  162.   /* MCU Configuration--------------------------------------------------------*/
  163.  
  164.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  165.   HAL_Init();
  166.  
  167.   /* USER CODE BEGIN Init */
  168.  
  169.   /* USER CODE END Init */
  170.  
  171.   /* Configure the system clock */
  172.   SystemClock_Config();
  173.  
  174.   /* USER CODE BEGIN SysInit */
  175.  
  176.   /* USER CODE END SysInit */
  177.  
  178.   /* Initialize all configured peripherals */
  179.   MX_GPIO_Init();
  180.   MX_USART1_UART_Init();
  181.   /* USER CODE BEGIN 2 */
  182.  
  183.   /* USER CODE END 2 */
  184.  
  185.   /* Infinite loop */
  186.   /* USER CODE BEGIN WHILE */
  187.   while (1)
  188.   {
  189.     /* USER CODE END WHILE */
  190.  
  191.     /* USER CODE BEGIN 3 */
  192.             DHT22_start ();
  193.             check_response ();
  194.             Rh_byte1 = read_data ();
  195.             Rh_byte2 = read_data ();
  196.             Temp_byte1 = read_data ();
  197.             Temp_byte2 = read_data ();
  198.        
  199.             //sum = read_data();
  200.  
  201.             TEMP = ((Temp_byte1<<8)|Temp_byte2);
  202.             RH = ((Rh_byte1<<8)|Rh_byte2);
  203.  
  204.              //a=(uint8_t)(Rh_byte1+Rh_byte2+Temp_byte1+Temp_byte2);
  205.              //HAL_UART_Transmit(&huart1,(uint8_t*)"resul\r\n",sizeof("resul\r\n")-1,100);
  206. //    ////
  207. //              if ((sum) == a)
  208. //          {
  209. //              TEMP = ((Temp_byte1<<8)|Temp_byte2);
  210. //              RH = ((Rh_byte1<<8)|Rh_byte2);
  211. //
  212. //          }
  213.                 delay_ms(2000);
  214.               //  HAL_UART_Transmit(&huart1, (uint8_t *)str,strlen(str), 500);
  215.                 sprintf(str,"\f sicaklik = %d.%d  nem=%d.%d \n\r",TEMP/10,TEMP%10,RH/10,RH%10);
  216.  
  217.                                  HAL_UART_Transmit(&huart1, (uint8_t *)str,strlen(str), 500);
  218.                                              HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_4);
  219.   }
  220.   /* USER CODE END 3 */
  221. }
  222.  
  223. /**
  224.   * @brief System Clock Configuration
  225.   * @retval None
  226.   */
  227. void SystemClock_Config(void)
  228. {
  229.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  230.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  231.   RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  232.  
  233.   /** Initializes the CPU, AHB and APB busses clocks
  234.   */
  235.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  236.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  237.   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  238.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  239.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  240.   {
  241.     Error_Handler();
  242.   }
  243.   /** Initializes the CPU, AHB and APB busses clocks
  244.   */
  245.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  246.                               |RCC_CLOCKTYPE_PCLK1;
  247.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  248.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  249.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  250.  
  251.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  252.   {
  253.     Error_Handler();
  254.   }
  255.   PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
  256.   PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
  257.   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  258.   {
  259.     Error_Handler();
  260.   }
  261. }
  262.  
  263. /**
  264.   * @brief USART1 Initialization Function
  265.   * @param None
  266.   * @retval None
  267.   */
  268. static void MX_USART1_UART_Init(void)
  269. {
  270.  
  271.   /* USER CODE BEGIN USART1_Init 0 */
  272.  
  273.   /* USER CODE END USART1_Init 0 */
  274.  
  275.   /* USER CODE BEGIN USART1_Init 1 */
  276.  
  277.   /* USER CODE END USART1_Init 1 */
  278.   huart1.Instance = USART1;
  279.   huart1.Init.BaudRate = 38400;
  280.   huart1.Init.WordLength = UART_WORDLENGTH_8B;
  281.   huart1.Init.StopBits = UART_STOPBITS_1;
  282.   huart1.Init.Parity = UART_PARITY_NONE;
  283.   huart1.Init.Mode = UART_MODE_TX_RX;
  284.   huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  285.   huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  286.   huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  287.   huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  288.   if (HAL_UART_Init(&huart1) != HAL_OK)
  289.   {
  290.     Error_Handler();
  291.   }
  292.   /* USER CODE BEGIN USART1_Init 2 */
  293.  
  294.   /* USER CODE END USART1_Init 2 */
  295.  
  296. }
  297.  
  298. /**
  299.   * @brief GPIO Initialization Function
  300.   * @param None
  301.   * @retval None
  302.   */
  303. static void MX_GPIO_Init(void)
  304. {
  305.   GPIO_InitTypeDef GPIO_InitStruct = {0};
  306.  
  307.   /* GPIO Ports Clock Enable */
  308.   __HAL_RCC_GPIOF_CLK_ENABLE();
  309.   __HAL_RCC_GPIOA_CLK_ENABLE();
  310.   __HAL_RCC_GPIOB_CLK_ENABLE();
  311.  
  312.   /*Configure GPIO pin Output Level */
  313.   HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5|GPIO_PIN_7|GPIO_PIN_4, GPIO_PIN_RESET);
  314.  
  315.   /*Configure GPIO pin Output Level */
  316.   HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_RESET);
  317.  
  318.   /*Configure GPIO pins : PA5 PA7 */
  319.   GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_7|GPIO_PIN_4;
  320.   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  321.   GPIO_InitStruct.Pull = GPIO_NOPULL;
  322.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  323.   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  324.  
  325.   /*Configure GPIO pin : PB1 */
  326.   GPIO_InitStruct.Pin = GPIO_PIN_1;
  327.   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  328.   GPIO_InitStruct.Pull = GPIO_NOPULL;
  329.   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  330.   HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
  331.  
  332. }
  333.  
  334. /* USER CODE BEGIN 4 */
  335.  
  336. /* USER CODE END 4 */
  337.  
  338. /**
  339.   * @brief  This function is executed in case of error occurrence.
  340.   * @retval None
  341.   */
  342. void Error_Handler(void)
  343. {
  344.   /* USER CODE BEGIN Error_Handler_Debug */
  345.   /* User can add his own implementation to report the HAL error return state */
  346.  
  347.   /* USER CODE END Error_Handler_Debug */
  348. }
  349.  
  350. #ifdef  USE_FULL_ASSERT
  351. /**
  352.   * @brief  Reports the name of the source file and the source line number
  353.   *         where the assert_param error has occurred.
  354.   * @param  file: pointer to the source file name
  355.   * @param  line: assert_param error line source number
  356.   * @retval None
  357.   */
  358. void assert_failed(char *file, uint32_t line)
  359. {
  360.   /* USER CODE BEGIN 6 */
  361.   /* User can add his own implementation to report the file name and line number,
  362.      tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  363.   /* USER CODE END 6 */
  364. }
  365. #endif /* USE_FULL_ASSERT */
  366.  
  367. /******** (C) COPYRIGHT STMicroelectronics **END OF FILE*/
Advertisement
Add Comment
Please, Sign In to add comment
Public Pastes
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!