10_STM32cubeIDE_DHT11(溫溼度傳感器),HC-SR04(超聲波傳感器)

時間 2019-11-06

標籤 stm32cubeide stm cubeide dht11 dht 溫溼度傳感器 sr04 超聲波简体版

原文原文鏈接

1_DHT11

1.1_DHT11+OLED-IIC-SSD1306

github工程地址git

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "fonts.h"
#include "ssd1306.h"
#include "dwt_stm32_delay.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 ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint8_t Rh_byte1, Rh_byte2, Temp_byte1, Temp_byte2;
uint16_t sum, RH, TEMP;
int temp_low, temp_high, rh_low, rh_high;
char temp_char1[2], temp_char2, rh_char1[2], rh_char2;
uint8_t check = 0;
GPIO_InitTypeDef GPIO_InitStruct;
void set_gpio_output (void)
{
	/*Configure GPIO pin output: PA2 */
  GPIO_InitStruct.Pin = GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

void set_gpio_input (void)
{
	/*Configure GPIO pin input: PA2 */
  GPIO_InitStruct.Pin = GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

void DHT11_start (void)
{
	set_gpio_output ();  // set the pin as output
	HAL_GPIO_WritePin (GPIOA, GPIO_PIN_1, 0);   // pull the pin low
	DWT_Delay_us (18000);   // wait for 18ms
	set_gpio_input ();   // set as input
}

void check_response (void)
{
	DWT_Delay_us (40);
	if (!(HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1)))
	{
		DWT_Delay_us (80);
		if ((HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1))) check = 1;
	}
	while ((HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1)));   // wait for the pin to go low
}

uint8_t read_data (void)
{
	uint8_t i,j;
	for (j=0;j<8;j++)
	{
		while (!(HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1)));   // wait for the pin to go high
		DWT_Delay_us (40);   // wait for 40 us
		if ((HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1)) == 0)   // if the pin is low
		{
			i&= ~(1<<(7-j));   // write 0
		}
		else i|= (1<<(7-j));  // if the pin is high, write 1
		while ((HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1)));  // wait for the pin to go low
	}
	return i;
}
/* 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_I2C1_Init();
  /* USER CODE BEGIN 2 */
  DWT_Delay_Init ();
  SSD1306_Init();  // initialise

  /* USER CODE END 2 */

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

    /* USER CODE BEGIN 3 */
		    DHT11_start ();
			check_response ();
			Rh_byte1 = read_data ();
			Rh_byte2 = read_data ();
			Temp_byte1 = read_data ();
			Temp_byte2 = read_data ();
			sum = read_data();
			if (sum == (Rh_byte1+Rh_byte2+Temp_byte1+Temp_byte2))    // if the data is correct
			{

			SSD1306_GotoXY (0,0);
			SSD1306_Puts("TEMP:- ",&Font_11x18, 1);
			SSD1306_Putc((Temp_byte1/10)+48,&Font_11x18, 1);
			SSD1306_Putc((Temp_byte1%10)+48,&Font_11x18, 1);
			SSD1306_Puts("C",&Font_11x18, 1);
			  //display
			SSD1306_GotoXY (0,30);
			SSD1306_Puts("RH:- ",&Font_11x18, 1);
			SSD1306_Putc((Rh_byte1/10)+48,&Font_11x18, 1);
			SSD1306_Putc((Rh_byte1%10)+48,&Font_11x18, 1);
			SSD1306_Puts("%",&Font_11x18, 1);
            SSD1306_UpdateScreen();
			HAL_Delay (1000);
			}
  }
  /* USER CODE END 3 */
}
複製代碼

2_HC-SR04

2.1_HC-SR04+OLED_SSD106_IIC_0.96

github工程地址github

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "fonts.h"
#include "ssd1306.h"
#include "dwt_stm32_delay.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 ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint32_t local_time, sensor_time;
uint32_t distance;

uint32_t hcsr04_read (void)
{
	local_time=0;
	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_RESET);  // pull the TRIG pin HIGH
	DWT_Delay_us(2);  // wait for 2 us


	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_SET);  // pull the TRIG pin HIGH
	DWT_Delay_us(10);  // wait for 10 us
	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_1, GPIO_PIN_RESET);  // pull the TRIG pin low

	// read the time for which the pin is high

	while (!(HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_2)));  // wait for the ECHO pin to go high
	while (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_2))    // while the pin is high
	 {
		local_time++;   // measure time for which the pin is high
		DWT_Delay_us (1);
	 }
	return local_time*2;
}
/* 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_I2C1_Init();
  /* USER CODE BEGIN 2 */
  DWT_Delay_Init ();
  SSD1306_Init();  // initialise
  /* USER CODE END 2 */

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

    /* USER CODE BEGIN 3 */
	  sensor_time = hcsr04_read();
	  distance  = sensor_time * .034/2;

	  SSD1306_GotoXY (0,0);
	  SSD1306_Puts ("Dist= ",&Font_11x18, 1);
	  SSD1306_Putc ((distance/100)+48,&Font_11x18, 1);
	  SSD1306_Putc (((distance%100)/10)+48,&Font_11x18, 1);
	  SSD1306_Putc (((distance%10))+48,&Font_11x18, 1);
	  SSD1306_Puts("CM",&Font_11x18, 1);
	  SSD1306_UpdateScreen();
	  HAL_Delay(200);
  }
  /* USER CODE END 3 */
}
複製代碼

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