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 <stdio.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 */
#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 */
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