{"id":43066,"date":"2025-06-11T08:54:35","date_gmt":"2025-06-11T00:54:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/43066.html"},"modified":"2025-06-11T08:54:35","modified_gmt":"2025-06-11T00:54:35","slug":"dht11%e6%b8%a9%e6%b9%bf%e5%ba%a6%e4%bc%a0%e6%84%9f%e5%99%a8%e8%af%a6%e8%a7%a3%ef%bc%88stm32%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/43066.html","title":{"rendered":"DHT11\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668\u8be6\u89e3\uff08STM32\uff09"},"content":{"rendered":"

\u76ee\u5f55<\/p>\n

\u00a0\u4e00\u3001\u4ecb\u7ecd<\/p>\n

\u00a0\u4e8c\u3001\u4f20\u611f\u5668\u539f\u7406<\/p>\n

1.\u539f\u7406\u56fe<\/p>\n

2.\u5de5\u4f5c\u65f6\u5e8f<\/p>\n

3.\u8d77\u59cb\u4fe1\u53f7\u4e0e\u54cd\u5e94\u4fe1\u53f7<\/p>\n

4.\u8bfb\u6570\u636e\u65f6\u5e8f<\/p>\n

\u00a05.DHT11\u6570\u636e\u683c\u5f0f<\/p>\n

\u4e09\u3001\u7a0b\u5e8f\u8bbe\u8ba1<\/p>\n

\u00a0main.c\u6587\u4ef6<\/p>\n

\u00a0dht11.h\u6587\u4ef6<\/p>\n

\u00a0dht11.c\u6587\u4ef6<\/p>\n

\u56db\u3001\u5b9e\u9a8c\u6548\u679c\u5c55\u793a<\/p>\n

\u00a0\u4e94\u3001\u8d44\u6599\u83b7\u53d6<\/p>\n

\u00a0\u00a0\u9879\u76ee\u5206\u4eab<\/p>\n

\u00a0\u4e00\u3001\u4ecb\u7ecd<\/h2>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0DHT11\u662f\u4e00\u6b3e\u542b\u6709\u5df2\u6821\u51c6\u6570\u5b57\u4fe1\u53f7\u8f93\u51fa\u7684\u6e29\u6e7f\u5ea6\u590d\u5408\u4f20\u611f\u5668，\u91c7\u7528\u4e86\u81ea\u4e3b\u7814\u53d1\u7684\u96c6\u6210\u5f0f\u6570\u5b57\u6e29\u6e7f\u5ea6\u5143\u4ef6，\u5e94\u7528\u4e13\u7528\u7684\u6570\u5b57\u6a21\u5757\u91c7\u96c6\u6280\u672f\u548c\u6e29\u6e7f\u5ea6\u4f20\u611f\u6280\u672f，\u786e\u4fdd\u4ea7\u54c1\u5177\u6709\u6781\u9ad8\u7684\u53ef\u9760\u6027\u4e0e\u5353\u8d8a\u7684\u957f\u671f\u7a33\u5b9a\u6027\u3002DHT11<\/span>\u4f20\u611f\u5668\u5185\u5305\u542b\u4e00\u4e2a<\/span>\u6e29\u6e7f\u5ea6\u6d4b\u91cf\u5143\u4ef6<\/span>\u548c\u4e00\u4e2a<\/span>\u9ad8\u6027\u80fd<\/span>MCU<\/span>\u3002<\/span><\/p>\n

\"\"<\/p>\n

\u00a0\u4ee5\u4e0b\u662fDHT11\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668\u7684\u53c2\u6570：<\/p>\n\n\n\n\n\n\n\n\n\n\n
\n

\u4f9b\u7535\u7535\u538b\u00a0<\/span><\/span><\/p>\n<\/td>\n

\n

DC：3.3-5.5V<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u5de5\u4f5c\u8303\u56f4<\/span><\/span>(<\/span><\/span>\u6e29\u5ea6<\/span><\/span>)<\/span><\/span><\/p>\n<\/td>\n

\n

-20~+60\u2103<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u91cf\u7a0b\u8303\u56f4<\/span><\/span>(<\/span><\/span>\u6e7f\u5ea6<\/span><\/span>)<\/span><\/span><\/p>\n<\/td>\n

\n

5~95%RH<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u6e29\u5ea6\u7cbe\u5ea6<\/span><\/span><\/p>\n<\/td>\n

\n

\u00b12\u2103<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u6e7f\u5ea6\u7cbe\u5ea6<\/span><\/span><\/p>\n<\/td>\n

\n

\u00b15%RH<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u91cd\u590d\u6027<\/span><\/span><\/p>\n<\/td>\n

\n

\u6e29\u5ea6：<\/span>\u00b11\u2103\u00a0<\/span>；\u6e7f\u5ea6：<\/span>\u00b11%RH<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u8fdf\u6ede<\/span><\/span>(<\/span><\/span>\u6e29\u5ea6<\/span><\/span>)<\/span><\/span><\/p>\n<\/td>\n

\n

\u00b10.3\u2103<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u8fdf\u6ede<\/span><\/span>(<\/span><\/span>\u6e7f\u5ea6<\/span><\/span>)<\/span><\/span><\/p>\n<\/td>\n

\n

\u00b10.3%RH<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u54d4\u54e9\u54d4\u54e9\u89c6\u9891\u94fe\u63a5：<\/p>\n

https:\/\/www.bilibili.com\/video\/BV182421Z7by\/?share_source=copy_web&vd_source=097fdeaf6b6ecfed8a9ff7119c32faf2<\/p>\n

（\u8d44\u6599\u5206\u4eab\u89c1\u6587\u672b）\u00a0<\/span><\/p>\n

\u00a0\u4e8c\u3001\u4f20\u611f\u5668\u539f\u7406<\/h2>\n

1.\u539f\u7406\u56fe<\/h3>\n

\"\"\u00a0\u00a0\u5355\u603b\u7ebf\u4e0a\u5fc5\u987b\u6709\u4e00\u4e2a\u4e0a\u62c9\u7535\u963b（<\/span>R1<\/span>）\u4ee5\u5b9e\u73b0\u5355\u603b\u7ebf<\/span>\u95f2\u7f6e<\/span>\u65f6，\u5176\u5904\u4e8e<\/span>\u9ad8\u7535\u5e73\u72b6\u6001<\/span><\/p>\n

2.\u5de5\u4f5c\u65f6\u5e8f<\/h3>\n

\"\"<\/p>\n

\"\"<\/p>\n\n\n\n\n\n\n\n
\n

\u7b26\u53f7<\/span><\/p>\n<\/td>\n

\n

\u53c2\u6570<\/span><\/p>\n<\/td>\n

\n

\u6700\u5c0f<\/span><\/p>\n<\/td>\n

\n

\u5178\u578b<\/span><\/p>\n<\/td>\n

\n

\u6700\u5927<\/span><\/p>\n<\/td>\n

\n

\u5355\u4f4d<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Tbe<\/span><\/p>\n<\/td>\n

\n

\u4e3b\u673a\u8d77\u59cb\u4fe1\u53f7\u62c9\u4f4e\u65f6\u95f4<\/span><\/p>\n<\/td>\n

\n

18<\/span><\/p>\n<\/td>\n

\n

20<\/span><\/p>\n<\/td>\n

\n

30<\/span><\/p>\n<\/td>\n

\n

ms<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Tgo<\/span><\/p>\n<\/td>\n

\n

\u4e3b\u673a\u91ca\u653e\u5355\u603b\u7ebf\u65f6\u95f4<\/span><\/p>\n<\/td>\n

\n

10<\/span><\/p>\n<\/td>\n

\n

13<\/span><\/p>\n<\/td>\n

\n

35<\/span><\/p>\n<\/td>\n

\n

us<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Trel<\/span><\/p>\n<\/td>\n

\n

\u54cd\u5e94\u4f4e\u7535\u5e73\u65f6\u95f4<\/span><\/p>\n<\/td>\n

\n

78<\/span><\/p>\n<\/td>\n

\n

83<\/span><\/p>\n<\/td>\n

\n

88<\/span><\/p>\n<\/td>\n

\n

us<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

Treh<\/span><\/p>\n<\/td>\n

\n

\u54cd\u5e94\u9ad8\u7535\u5e73\u65f6\u95f4 <\/span><\/p>\n<\/td>\n

\n

80<\/span><\/p>\n<\/td>\n

\n

87<\/span><\/p>\n<\/td>\n

\n

92<\/span><\/p>\n<\/td>\n

\n

us<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3.\u8d77\u59cb\u4fe1\u53f7\u4e0e\u54cd\u5e94\u4fe1\u53f7<\/h3>\n

\"\"<\/h3>\n

\"\"<\/p>\n

4.\u8bfb\u6570\u636e\u65f6\u5e8f<\/h3>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u00a05.DHT11\u6570\u636e\u683c\u5f0f<\/h3>\n

\"\"<\/p>\n

\u00a034H + 01H + 18H + 8CH = D9H<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6e7f\u5ea6\u9ad88\u4f4d（\u6574\u6570）\u4e3a<\/span>34H<\/span>，\u4f4e<\/span>8<\/span>\u4f4d（\u5c0f\u6570）\u4e3a<\/span>01H<\/span>，\u5c06\u4e24\u90e8\u5206\u6570\u503c\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u540e\u53ef\u4ee5\u5f97\u51fa<\/span>52.1<\/span>，\u5373\u6e7f\u5ea6\u4e3a<\/span>52.1%RH<\/span>\u3002\u540c\u7406\u53ef\u4ee5\u5f97\u51fa\u56fe<\/span>7<\/span>\u4e2d\u7684\u6e29\u5ea6\u4e3a<\/span>-24.12\u2103<\/span>\u3002\u6b64\u5904\u6e29\u5ea6\u4e3a\u8d1f\u503c\u65f6\u56e0\u4e3a\u6e29\u5ea6\u6570\u636e\u7684\u4f4e<\/span>8<\/span>\u4f4d\u7684\u6700\u9ad8\u4f4d<\/span>Bit7<\/span>\u4e3a<\/span>1<\/span>；\u5f53\u6700\u9ad8\u4f4d<\/span>Bit7<\/span>\u4e3a<\/span>0<\/span>\u65f6，\u6570\u503c\u4e3a\u6b63\u503c\u3002<\/span><\/p>\n

\u4e09\u3001\u7a0b\u5e8f\u8bbe\u8ba1<\/h2>\n

1.<\/span>\u4f7f\u7528<\/span>STM32F103C8T6<\/span>\u8bfb\u53d6<\/span>DHT11<\/span>\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668<\/span>\u91c7\u96c6\u7684\u6570\u636e，\u901a\u8fc7\u4e32\u53e3\u53d1\u9001\u81f3\u7535\u8111<\/span><\/p>\n

2.<\/span>\u5c06\u8bfb\u53d6\u5f97\u5230\u7684\u6e29\u6e7f\u5ea6\u6570\u636e\u540c\u65f6\u5728<\/span>OLED<\/span>\u4e0a\u663e\u793a<\/span><\/p>\n\n\n\n\n\n\n
\n

DHT11<\/span><\/span><\/p>\n<\/td>\n

\n

PB5<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

OLED_SCL<\/span><\/span><\/p>\n<\/td>\n

\n

PB11<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

OLED_SDA<\/span><\/span><\/p>\n<\/td>\n

\n

PB10<\/span><\/p>\n<\/td>\n<\/tr>\n

\n

\u4e32\u53e3<\/span><\/span><\/p>\n<\/td>\n

\n

\u4e32\u53e3<\/span>1<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0main.c\u6587\u4ef6<\/h3>\n

#include "stm32f10x.h"
\n#include "led.h"
\n#include "usart.h"
\n#include "delay.h"
\n#include "dht11.h"
\n#include "oled.h"
\n\/*****************\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1******************
\n STM32
\n * \u9879\u76ee:1.DHT11\u6e29\u5ea6\u6e7f\u5ea6\u4f20\u611f\u5668\u5b9e\u9a8c
\n * \u7248\u672c: V1.0
\n * \u65e5\u671f: 2024.8.4
\n * MCU:STM32F103C8T6
\n * \u63a5\u53e3:\u53c2\u770bDHT11.h
\n * BILIBILI :\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1
\n * CSDN:\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1
\n * \u4f5c\u8005:\u8fb0\u54e5 <\/p>\n

**********************BEGIN***********************\/
\nu8 temp;
\nu8 humi;
\nint main(void)
\n{ <\/p>\n

SystemInit();\/\/\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f\u4e3a72M
\ndelay_init(72);
\nLED_Init();
\nLED_On();
\nUSART1_Config();\/\/\u4e32\u53e3\u521d\u59cb\u5316
\nOLED_Init();
\nprintf("Start \\\\n");
\ndelay_ms(1000);
\nwhile(DHT11_Init())
\n{
\nprintf("DHT11 Error \\\\r\\\\n");
\ndelay_ms(1000);
\n}
\n\/\/\u663e\u793a\u201c\u6e29\u5ea6：\u201d
\nOLED_ShowChinese(1,1, 0);
\nOLED_ShowChinese(1,2, 1);
\nOLED_ShowChar(1, 5, ':');
\nOLED_ShowChar(1, 9, 'C');
\n\/\/\u663e\u793a\u201c\u6e7f\u5ea6：\u201d
\nOLED_ShowChinese(2,1, 2);
\nOLED_ShowChinese(2,2, 1);
\nOLED_ShowChar(2, 5, ':');
\nOLED_ShowChar(2, 9, '%');<\/p>\n

while (1)
\n {
\nDHT11_Read_Data(&temp,&humi);\/\/
\nprintf("temp %d ,humi %d\\\\r\\\\n",temp,humi);
\nLED_Toggle();
\ndelay_ms(1000);
\n\/\/\u663e\u793a\u6e29\u5ea6\u6570\u636e
\nOLED_ShowNum(1,6,temp,2);
\n\/\/\u663e\u793a\u6e7f\u5ea6\u6570\u636e
\nOLED_ShowNum(2,6,humi,2);
\n }
\n} <\/p>\n

\u00a0dht11.h\u6587\u4ef6<\/h3>\n

#ifndef __DHT11_H
\n#define __DHT11_H
\n#include "stm32f10x.h" \/\/ Device header
\n#include "delay.h"<\/p>\n

\/*****************\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1******************
\n STM32
\n * \u6587\u4ef6:DHT11\u6e29\u5ea6\u6e7f\u5ea6\u4f20\u611f\u5668h\u6587\u4ef6
\n * \u7248\u672c: V1.0
\n * \u65e5\u671f: 2024.8.4
\n * MCU:STM32F103C8T6
\n * \u63a5\u53e3:\u89c1\u4ee3\u7801
\n * BILIBILI :\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1
\n * CSDN:\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1
\n * \u4f5c\u8005:\u8fb0\u54e5<\/p>\n

**********************BEGIN***********************
\n\/***************\u6839\u636e\u81ea\u5df1\u9700\u6c42\u66f4\u6539****************\/
\n\/\/DHT11\u5f15\u811a\u5b8f\u5b9a\u4e49
\n#define DHT11_GPIO_PORT GPIOA
\n#define DHT11_GPIO_PIN GPIO_Pin_6
\n#define DHT11_GPIO_CLK RCC_APB2Periph_GPIOA
\n\/*********************END**********************\/<\/p>\n

\/\/\u8f93\u51fa\u72b6\u6001\u5b9a\u4e49
\n#define OUT 1
\n#define IN 0<\/p>\n

\/\/\u63a7\u5236DHT11\u5f15\u811a\u8f93\u51fa\u9ad8\u4f4e\u7535\u5e73
\n#define DHT11_Low GPIO_ResetBits(DHT11_GPIO_PORT,DHT11_GPIO_PIN)
\n#define DHT11_High GPIO_SetBits(DHT11_GPIO_PORT,DHT11_GPIO_PIN)<\/p>\n

u8 DHT11_Init(void);\/\/\u521d\u59cb\u5316DHT11
\nu8 DHT11_Read_Data(u8 *temp,u8 *humi);\/\/\u8bfb\u53d6\u6e29\u6e7f\u5ea6\u6570\u636e
\nu8 DHT11_Read_Byte(void);\/\/\u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282\u7684\u6570\u636e
\nu8 DHT11_Read_Bit(void);\/\/\u8bfb\u53d6\u4e00\u4f4d\u7684\u6570\u636e
\nvoid DHT11_Mode(u8 mode);\/\/DHT11\u5f15\u811a\u8f93\u51fa\u6a21\u5f0f\u63a7\u5236
\nu8 DHT11_Check(void);\/\/\u68c0\u6d4bDHT11
\nvoid DHT11_Rst(void);\/\/\u590d\u4f4dDHT11 <\/p>\n

#endif<\/p>\n

\u00a0dht11.c\u6587\u4ef6<\/h3>\n

#include "dht11.h"
\n#include "delay.h"<\/p>\n

\/*****************\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1******************
\nSTM32
\n * \u6587\u4ef6:DHT11\u6e29\u5ea6\u6e7f\u5ea6\u4f20\u611f\u5668c\u6587\u4ef6
\n * \u7248\u672c: V1.0
\n * \u65e5\u671f: 2024.8.4
\n * MCU:STM32F103C8T6
\n * \u63a5\u53e3:\u89c1dht11.h\u6587\u4ef6
\n * BILIBILI:\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1
\n * CSDN:\u8fb0\u54e5\u5355\u7247\u673a\u8bbe\u8ba1
\n * \u4f5c\u8005:\u8fb0\u54e5<\/p>\n

**********************BEGIN***********************\/<\/p>\n

\/\/\u590d\u4f4dDHT11
\nvoid DHT11_Rst(void)
\n{
\nDHT11_Mode(OUT); \/\/SET OUTPUT
\nDHT11_Low; \/\/\u62c9\u4f4eDQ
\ndelay_ms(20); \/\/\u4e3b\u673a\u62c9\u4f4e18~30ms
\nDHT11_High; \/\/DQ=1
\ndelay_us(13); \/\/\u4e3b\u673a\u62c9\u9ad810~35us
\n}<\/p>\n

\/\/\u7b49\u5f85DHT11\u7684\u56de\u5e94
\n\/\/\u8fd4\u56de1:\u672a\u68c0\u6d4b\u5230DHT11\u7684\u5b58\u5728
\n\/\/\u8fd4\u56de0:\u5b58\u5728
\nu8 DHT11_Check(void)
\n{
\nu8 retry=0;
\nDHT11_Mode(IN);\/\/SET INPUT
\n while (GPIO_ReadInputDataBit(DHT11_GPIO_PORT,DHT11_GPIO_PIN)&&retry<100)\/\/DHT11\u4f1a\u62c9\u4f4e40~80us
\n{
\nretry++;
\ndelay_us(1);
\n};
\nif(retry>=100)return 1;
\nelse retry=0;
\n while (!GPIO_ReadInputDataBit(DHT11_GPIO_PORT,DHT11_GPIO_PIN)&&retry<100)\/\/DHT11\u62c9\u4f4e\u540e\u4f1a\u518d\u6b21\u62c9\u9ad840~80us
\n{
\nretry++;
\ndelay_us(1);
\n};
\nif(retry>=100)return 1;
\nreturn 0;
\n}<\/p>\n

\/\/\u4eceDHT11\u8bfb\u53d6\u4e00\u4e2a\u4f4d
\n\/\/\u8fd4\u56de\u503c：1\/0
\nu8 DHT11_Read_Bit(void)
\n{
\n u8 retry=0;
\nwhile(GPIO_ReadInputDataBit(DHT11_GPIO_PORT,DHT11_GPIO_PIN)&&retry<100)\/\/\u7b49\u5f85\u53d8\u4e3a\u4f4e\u7535\u5e73
\n{
\nretry++;
\ndelay_us(1);
\n}
\nretry=0;
\nwhile(!GPIO_ReadInputDataBit(DHT11_GPIO_PORT,DHT11_GPIO_PIN)&&retry<100)\/\/\u7b49\u5f85\u53d8\u9ad8\u7535\u5e73
\n{
\nretry++;
\ndelay_us(1);
\n}
\ndelay_us(40);\/\/\u7b49\u5f8540us
\nif(GPIO_ReadInputDataBit(DHT11_GPIO_PORT,DHT11_GPIO_PIN))return 1;
\nelse return 0;
\n}<\/p>\n

\/\/\u4eceDHT11\u8bfb\u53d6\u4e00\u4e2a\u5b57\u8282
\n\/\/\u8fd4\u56de\u503c：\u8bfb\u5230\u7684\u6570\u636e
\nu8 DHT11_Read_Byte(void)
\n{
\nu8 i,dat;
\ndat=0;
\nfor (i=0;i<8;i++)
\n{
\ndat<<=1;
\ndat|=DHT11_Read_Bit();
\n}
\nreturn dat;
\n}
\n\/\/\u4eceDHT11\u8bfb\u53d6\u4e00\u6b21\u6570\u636e
\n\/\/temp:\u6e29\u5ea6\u503c(\u8303\u56f4:0~50\u00b0)
\n\/\/humi:\u6e7f\u5ea6\u503c(\u8303\u56f4:20%~90%)
\n\/\/\u8fd4\u56de\u503c：0,\u6b63\u5e38;1,\u8bfb\u53d6\u5931\u8d25
\nu8 DHT11_Read_Data(u8 *temp,u8 *humi)
\n{
\n u8 buf[5];
\nu8 i;
\nDHT11_Rst();
\nif(DHT11_Check()==0)
\n{
\nfor(i=0;i<5;i++)\/\/\u8bfb\u53d640\u4f4d\u6570\u636e
\n{
\nbuf[i]=DHT11_Read_Byte();
\n}
\nif((buf[0]+buf[1]+buf[2]+buf[3])==buf[4])
\n{
\n*humi=buf[0];
\n*temp=buf[2];
\n}
\n}
\nelse return 1;
\nreturn 0;
\n}<\/p>\n

\/\/\u521d\u59cb\u5316DHT11\u7684IO\u53e3 DQ \u540c\u65f6\u68c0\u6d4bDHT11\u7684\u5b58\u5728
\n\/\/\u8fd4\u56de1:\u4e0d\u5b58\u5728
\n\/\/\u8fd4\u56de0:\u5b58\u5728
\nu8 DHT11_Init(void)
\n{
\n GPIO_InitTypeDef GPIO_InitStructure;
\n RCC_APB2PeriphClockCmd(DHT11_GPIO_CLK, ENABLE); \/\/\u4f7f\u80fdPA\u7aef\u53e3\u65f6\u949f
\n GPIO_InitStructure.GPIO_Pin = DHT11_GPIO_PIN; \/\/PG11\u7aef\u53e3\u914d\u7f6e
\n GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; \/\/\u63a8\u633d\u8f93\u51fa
\n GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
\n GPIO_Init(DHT11_GPIO_PORT, &GPIO_InitStructure); \/\/\u521d\u59cb\u5316IO\u53e3
\n GPIO_SetBits(DHT11_GPIO_PORT,DHT11_GPIO_PIN); \/\/PG11 \u8f93\u51fa\u9ad8<\/p>\n

DHT11_Rst(); \/\/\u590d\u4f4dDHT11
\nreturn DHT11_Check();\/\/\u7b49\u5f85DHT11\u7684\u56de\u5e94
\n}
\nvoid DHT11_Mode(u8 mode)
\n{
\nGPIO_InitTypeDef GPIO_InitStructure;
\nif(mode)
\n{
\nGPIO_InitStructure.GPIO_Pin = DHT11_GPIO_PIN;
\nGPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
\nGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
\n}
\nelse
\n{
\nGPIO_InitStructure.GPIO_Pin = DHT11_GPIO_PIN;
\nGPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
\n}
\nGPIO_Init(DHT11_GPIO_PORT, &GPIO_InitStructure);
\n}<\/p>\n

\u56db\u3001\u5b9e\u9a8c\u6548\u679c\u5c55\u793a<\/h2>\n

\"\"<\/p>\n

\u00a0\u4e94\u3001\u8d44\u6599\u83b7\u53d6<\/h2>\n

\u00a0\u00a0\u9879\u76ee\u5206\u4eab<\/h3>\n","protected":false},"excerpt":{"rendered":"

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