STM32之温湿度LCD显示并上传服务器

目录

项目需求

项目框图

硬件清单  

LCD1602介绍及实战

硬件接线

引脚封装

代码实现 

DHT11介绍及实战

硬件接线

引脚封装

代码实现

项目设计及实现

项目设计

项目实现

---

项目需求

使用温湿度传感器模块（ DHT11 ）获取温度及湿度，并将值显示在 LCD1602 上，同时通过蓝牙模

块透传到手机。

项目框图

硬件清单  

DHT11

LCD1602

HC-08

继电器

杜邦线

LCD1602介绍及实战

硬件接线

D0D7 -- A0A7

RS -- B1

RW -- B2

EN -- B10

V0 -- GND （正视看不到显示结果，需要侧着看。否则需要接可调电阻）

引脚封装

RS 、 RW 、 EN 三根信号线经常需要进行拉高 / 拉低操作，可以进行封装

# define RS_GPIO_Port GPIOB

# define RW_GPIO_Port GPIOB

# define EN_GPIO_Port GPIOB

# define RS_Pin GPIO_PIN_1

# define RW_Pin GPIO_PIN_2

# define EN_Pin GPIO_PIN_10

# define RS_HIGH HAL_GPIO_WritePin ( RS_GPIO_Port , RS_Pin , GPIO_PIN_SET )

# define RS_LOW HAL_GPIO_WritePin ( RS_GPIO_Port , RS_Pin , GPIO_PIN_RESET )

# define RW_HIGH HAL_GPIO_WritePin ( RW_GPIO_Port , RW_Pin , GPIO_PIN_SET )

# define RW_LOW HAL_GPIO_WritePin ( RW_GPIO_Port , RW_Pin , GPIO_PIN_RESET )

# define EN_HIGH HAL_GPIO_WritePin ( EN_GPIO_Port , EN_Pin , GPIO_PIN_SET )

# define EN_LOW HAL_GPIO_WritePin ( EN_GPIO_Port , EN_Pin , GPIO_PIN_RESET )

 如何将一个字节的数据按位一次性发送到GPIOA的8个管脚？

GPIOA -> ODR = cmd ;

代码实现 

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 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 "gpio.h"

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

/* 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 RS_GPIO_Port GPIOB
#define RW_GPIO_Port GPIOB
#define EN_GPIO_Port GPIOB
#define RS_Pin GPIO_PIN_1
#define RW_Pin GPIO_PIN_2
#define EN_Pin GPIO_PIN_10
#define RS_HIGH HAL_GPIO_WritePin(RS_GPIO_Port, RS_Pin, GPIO_PIN_SET)
#define RS_LOW HAL_GPIO_WritePin(RS_GPIO_Port, RS_Pin, GPIO_PIN_RESET)
#define RW_HIGH HAL_GPIO_WritePin(RW_GPIO_Port, RW_Pin, GPIO_PIN_SET)
#define RW_LOW HAL_GPIO_WritePin(RW_GPIO_Port, RW_Pin, GPIO_PIN_RESET)
#define EN_HIGH HAL_GPIO_WritePin(EN_GPIO_Port, EN_Pin, GPIO_PIN_SET)
#define EN_LOW HAL_GPIO_WritePin(EN_GPIO_Port, EN_Pin, GPIO_PIN_RESET)
/* 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 */
void Write_Cmd_Func(uint8_t cmd)
{
	RS_LOW;
	RW_LOW;
	EN_LOW;
	GPIOA->ODR = cmd;
	HAL_Delay(5);
	EN_HIGH;
	HAL_Delay(5);
	EN_LOW;
}
void Write_Data_Func(uint8_t dataShow)
{
	RS_HIGH;
	RW_LOW;
	EN_LOW;
	GPIOA->ODR = dataShow;
	HAL_Delay(5);
	EN_HIGH;
	HAL_Delay(5);
	EN_LOW;
}
void LCD1602_INIT(void)
{
	//（1）延时 15ms
	HAL_Delay(15);
	//（2）写指令 38H(不检测忙信号)
	Write_Cmd_Func(0x38);
	//（3）延时 5ms
	HAL_Delay(5);
	//（4）以后每次写指令，读/写数据操作均需要检测忙信号
	//（5）写指令 38H：显示模式设置
	Write_Cmd_Func(0x38);
	//（6）写指令 08H：显示关闭
	Write_Cmd_Func(0x08);
	//（7）写指令 01H：显示清屏
	Write_Cmd_Func(0x01);
	//（8）写指令 06H：显示光标移动设置
	Write_Cmd_Func(0x06);
	//（9）写指令 0CH：显示开及光标设置}
	Write_Cmd_Func(0x0c);
}
void LCD1602_showLine(char row, char col, char *string)
{
	switch(row){
	case 1:
		Write_Cmd_Func(0x80+col);
		while(*string){
			Write_Data_Func(*string);
			string++;
		}
	break;
	case 2:
		Write_Cmd_Func(0x80+0x40+col);
		while(*string){
			Write_Data_Func(*string);
			string++;
			}
	break;
	}
}
/* 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();
  /* USER CODE BEGIN 2 */
	//char position = 0x80 + 0x05;
	//char dataShow = 'C';
	LCD1602_INIT();
	//Write_Cmd_Func(position);//选择要显示的地址
	//Write_Data_Func(dataShow);//发送要显示的字符
	LCD1602_showLine(1,5,"NO.2");
	LCD1602_showLine(2,0,"LX handsome");
  /* USER CODE END 2 */

  /* 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};

  /** 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();
  }
}

/* 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 */

DHT11介绍及实战

硬件接线

DAT -- PB7

注意： PB7 既作为输入，也作为输出，则不能直接在 CubeMX 里配置，需要自己写代码

引脚封装

#define DHT_HIGHT HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET)
#define DHT_LOW HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET)
#define DHT_VALUE HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_7)

代码实现

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 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 "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include 
/* 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 */
#define DHT_HIGH HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET)
#define DHT_LOW HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET)
#define DHT_VALUE HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_7)

char datas[5];

void delay_us(uint16_t cnt)
{
    uint8_t i;

    while(cnt)
    {
        for (i = 0; i < 10; i++)
        {

        }
        cnt--;
    }
}

void DHT_GPIO_Init(uint32_t mode)
{
	GPIO_InitTypeDef GPIO_InitStruct = {0};
	__HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin : PB8 */
  GPIO_InitStruct.Pin = GPIO_PIN_7;
  GPIO_InitStruct.Mode = mode;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}

void DHT11_Start()
{
	DHT_GPIO_Init(GPIO_MODE_OUTPUT_PP);
	DHT_HIGH;
	DHT_LOW;
	HAL_Delay(30);
	DHT_HIGH;
	
	DHT_GPIO_Init(GPIO_MODE_INPUT);
	while(DHT_VALUE);
	while(!DHT_VALUE);
	while(DHT_VALUE);
}

void Read_Data_From_DHT()
{
	int i;//轮
	int j;//每一轮读多少次
	char tmp;
	char flag;
	
	DHT11_Start();
	DHT_GPIO_Init(GPIO_MODE_INPUT);
	for(i= 0;i < 5;i++){
		//卡g点：while(!dht)       有效数据都是高电平，持续时间不一样，50us读，低电平0 高电平
		for(j=0;j<8;j++){
			while(!DHT_VALUE);//等待卡g点
			delay_us(40);
			if(DHT_VALUE == 1){
				flag = 1;
				while(DHT_VALUE);
			}else{
				flag = 0;
			} 
			tmp = tmp << 1;
			tmp |= flag;
		}
		datas[i] = tmp;
	}
}

int fputc(int ch, FILE *f)
{      
    unsigned char temp[1]={ch};
    HAL_UART_Transmit(&huart1,temp,1,0xffff);  
    return ch;
}
/* 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();
  /* USER CODE BEGIN 2 */
	printf("LX handsome\r\n");
	HAL_Delay(2000);
  /* USER CODE END 2 */

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

    /* USER CODE BEGIN 3 */
		Read_Data_From_DHT();
		printf("Temp: %d.%d ", datas[2], datas[3]);
		printf("Humi: %d.%d\r\n", datas[0], datas[1]);
		HAL_Delay(1000);
  }
  /* USER CODE END 3 */
}

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

/* 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 */

项目设计及实现

项目设计

继电器数据线插在 PB6 上， DHT11 及 LCD1602 接线与上述相同。

项目实现

注意点：

1. 不要忘记将 Use MicroLIB 的勾打上；

2. 不要忘记在 main 函数把串口中断打开；

3. 使用蓝牙模块时，记得将波特率设置为 9600.

dht11.c

#include "dht11.h"
#include "gpio.h"

#define DHT_HIGH HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_SET)
#define DHT_LOW HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET)
#define DHT_VALUE HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_7)

char datas[5];

void delay_us(uint16_t cnt)
{
    uint8_t i;

    while(cnt)
    {
        for (i = 0; i < 10; i++)
        {

        }
        cnt--;
    }
}

void DHT_GPIO_Init(uint32_t mode)
{
	GPIO_InitTypeDef GPIO_InitStruct = {0};
	__HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin : PB8 */
  GPIO_InitStruct.Pin = GPIO_PIN_7;
  GPIO_InitStruct.Mode = mode;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}

void DHT11_Start()
{
	DHT_GPIO_Init(GPIO_MODE_OUTPUT_PP);
	DHT_HIGH;
	DHT_LOW;
	HAL_Delay(30);
	DHT_HIGH;
	
	DHT_GPIO_Init(GPIO_MODE_INPUT);
	while(DHT_VALUE);
	while(!DHT_VALUE);
	while(DHT_VALUE);
}

void Read_Data_From_DHT(void)
{
	int i;//轮
	int j;//每一轮读多少次
	char tmp;
	char flag;
	
	DHT11_Start();
	DHT_GPIO_Init(GPIO_MODE_INPUT);
	for(i= 0;i < 5;i++){
		//卡g点：while(!dht)       有效数据都是高电平，持续时间不一样，50us读，低电平0 高电平
		for(j=0;j<8;j++){
			while(!DHT_VALUE);//等待卡g点
			delay_us(40);
			if(DHT_VALUE == 1){
				flag = 1;
				while(DHT_VALUE);
			}else{
				flag = 0;
			} 
			tmp = tmp << 1;
			tmp |= flag;
		}
		datas[i] = tmp;
	}
}

dht11.h

#ifndef __DHT11_H__
#define __DHT11_H__

void Read_Data_From_DHT(void);

#endif

lcd1602.c

#include "lcd1602.h"
#include "gpio.h"

#define RS_GPIO_Port GPIOB
#define RW_GPIO_Port GPIOB
#define EN_GPIO_Port GPIOB
#define RS_GPIO_PIN GPIO_PIN_1
#define RW_GPIO_PIN GPIO_PIN_2
#define EN_GPIO_PIN GPIO_PIN_10

#define RS_HIGH HAL_GPIO_WritePin(RS_GPIO_Port, RS_GPIO_PIN, GPIO_PIN_SET)
#define RS_LOW HAL_GPIO_WritePin(RS_GPIO_Port, RS_GPIO_PIN, GPIO_PIN_RESET)
#define RW_HIGH HAL_GPIO_WritePin(RW_GPIO_Port, RW_GPIO_PIN, GPIO_PIN_SET)
#define RW_LOW HAL_GPIO_WritePin(RW_GPIO_Port, RW_GPIO_PIN, GPIO_PIN_RESET)
#define EN_HIGH HAL_GPIO_WritePin(EN_GPIO_Port, EN_GPIO_PIN, GPIO_PIN_SET)
#define EN_LOW HAL_GPIO_WritePin(EN_GPIO_Port, EN_GPIO_PIN, GPIO_PIN_RESET)

void Write_Cmd_Func(char cmd)
{
	RS_LOW;
	RW_LOW;
	EN_LOW;
	GPIOA->ODR = cmd;
	HAL_Delay(5);
	EN_HIGH;
	HAL_Delay(5);
	EN_LOW;
}

void Write_Data_Func(char dataShow)
{
	RS_HIGH;
	RW_LOW;
	EN_LOW;
	GPIOA->ODR = dataShow;
	HAL_Delay(5);
	EN_HIGH;
	HAL_Delay(5);
	EN_LOW;
}

void LCD1602_INIT(void)
{
	//（1）延时 15ms
	HAL_Delay(15);
//（2）写指令 38H(不检测忙信号) 
	Write_Cmd_Func(0x38);
//（3）延时 5ms
	HAL_Delay(5);
//（4）以后每次写指令，读/写数据操作均需要检测忙信号
//（5）写指令 38H：显示模式设置
	Write_Cmd_Func(0x38);
//（6）写指令 08H：显示关闭
	Write_Cmd_Func(0x08);
//（7）写指令 01H：显示清屏
	Write_Cmd_Func(0x01);
//（8）写指令 06H：显示光标移动设置
	Write_Cmd_Func(0x06);
//（9）写指令 0CH：显示开及光标设置}
	Write_Cmd_Func(0x0c);
}

void LCD1602_showLine(char row, char col, char *string)
{
	
	switch(row){

		case 1:
				Write_Cmd_Func(0x80+col);
				while(*string){
					Write_Data_Func(*string);
					string++;
				}
				break;
		
		case 2:
				Write_Cmd_Func(0x80+0x40+col);
				while(*string){
					Write_Data_Func(*string);
					string++;
				}
				break;
	
	}
}

lcd1602.h

#ifndef __LCD1602_H__
#define __LCD1602_H__

void LCD1602_INIT(void);
void LCD1602_showLine(char row, char col, char *string);

#endif

main.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 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 "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "string.h"
#include "lcd1602.h"
#include "dht11.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 */
extern char datas[5];
extern uint8_t buf;
/* 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 */
	char message[16];
  /* 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();
  /* USER CODE BEGIN 2 */
	printf("hello world\r\n");
	LCD1602_INIT();
	HAL_UART_Receive_IT(&huart1, &buf, 1);
//	Write_Cmd_Func(position);//选择要显示的地址
//	Write_Data_Func(dataShow);//发送要显示的字符
//	LCD1602_showLine(1,5,"NO.2");
//	LCD1602_showLine(2,0,"LX handsome");
	HAL_Delay(2000);
  /* USER CODE END 2 */

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

    /* USER CODE BEGIN 3 */
		Read_Data_From_DHT();
		if(datas[2] >= 24)
			HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET);
		else
			HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET);
		memset(message, 0, sizeof(message));
		sprintf(message, "Temp: %d.%d", datas[2], datas[3]);
		LCD1602_showLine(1, 0, message);
		memset(message, 0, sizeof(message));
		sprintf(message, "Humi: %d.%d", datas[0], datas[1]);
		LCD1602_showLine(2, 0, message);
		HAL_Delay(1000);
  }
  /* USER CODE END 3 */
}

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

/* 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 */