#include?“dht11.h“
#include?“delay.h“
		
//復(fù)位DHT11
void?DHT11_Rst（void）	???
{?????????????????
	DHT11_IO_OUT（）;?	//SET?OUTPUT
????DHT11_DQ_OUT=0;?	//拉低DQ
????delay_ms（20）;????	//拉低至少18ms
????DHT11_DQ_OUT=1;?	//DQ=1?
	delay_us（30）;?????	//主機(jī)拉高20~40us
}
//等待DHT11的回應(yīng)
//返回1:未檢測到DHT11的存在
//返回0:存在
u8?DHT11_Check（void）?	???
{???
	u8?retry=0;
	DHT11_IO_IN（）;//SET?INPUT	?
????while?（DHT11_DQ_IN&&retry<100）//DHT11會拉低40~80us
	{
		retry++;
		delay_us（1）;
	};	?
	if（retry>=100）return?1;
	else?retry=0;
????while?（!DHT11_DQ_IN&&retry<100）//DHT11拉低后會再次拉高40~80us
	{
		retry++;
		delay_us（1）;
	};
	if（retry>=100）return?1;	????
	return?0;
}
//從DHT11讀取一個(gè)位
//返回值：1/0
u8?DHT11_Read_Bit（void）?			?
{
?	u8?retry=0;
	while（DHT11_DQ_IN&&retry<100）//等待變?yōu)榈碗娖?br/>	{
		retry++;
		delay_us（1）;
	}
	retry=0;
	while（!DHT11_DQ_IN&&retry<100）//等待變高電平
	{
		retry++;
		delay_us（1）;
	}
	delay_us（35）;//等待35us
	if（DHT11_DQ_IN）return?1;
	else?return?0;		???
}
//從DHT11讀取一個(gè)字節(jié)
//返回值：讀到的數(shù)據(jù)
u8?DHT11_Read_Byte（void）????
{????????
????u8?idat;
????dat=0;
	for?（i=0;i<8;i++）?
	{
???		dat<<=1;?
	????dat|=DHT11_Read_Bit（）;
????}						????
????return?dat;
}
//從DHT11讀取一次數(shù)據(jù)
//temp:溫度值（范圍:0~50°）
//humi:濕度值（范圍:20%~90%）
//返回值：0正常;1讀取失敗
u8?DHT11_Read_Data（u8?*temperatureu8?*humidity）????
{????????
?	u8?buf[5];
	u8?i;
	DHT11_Rst（）;
	if（DHT11_Check（）==0）
	{
		for（i=0;i<5;i++）//讀取40位數(shù)據(jù)
		{
			buf[i]=DHT11_Read_Byte（）;
		}
		if（（buf[0]+buf[1]+buf[2]+buf[3]）==buf[4]）
		{
			*humidity=buf[0];
			*temperature=buf[2];
		}
	}else?return?1;
	return?0;	????
}
//初始化DHT11的IO口?DQ?同時(shí)檢測DHT11的存在
//返回1:不存在
//返回0:存在????	?
u8?DHT11_Init（void）
{	?
?	GPIO_InitTypeDef??GPIO_InitStructure;
?	
?	RCC_APB2PeriphClockCmd（RCC_APB2Periph_GPIOG?ENABLE）;	?//使能PG端口時(shí)鐘
	
?	GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_11;				?//PG11端口配置
?	GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_Out_PP;?		?//推挽輸出
?	GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
?	GPIO_Init（GPIOG?&GPIO_InitStructure）;				?//初始化IO口
?	GPIO_SetBits（GPIOGGPIO_Pin_11）;						?//PG11?輸出高
			????
	DHT11_Rst（）;??//復(fù)位DHT11
	return?DHT11_Check（）;//等待DHT11的回應(yīng)
}?

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????2338??2017-08-03?15:44??800C_ONENET_HTTP_DEMO\Devices\dht11.c

?????文件????????626??2017-08-03?15:43??800C_ONENET_HTTP_DEMO\Devices\dht11.h

?????文件???????2942??2017-08-02?15:01??800C_ONENET_HTTP_DEMO\Hal\usart1.c

?????文件????????342??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Hal\usart1.h

?????文件???????3585??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Hal\usart2.c

?????文件????????508??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Hal\usart2.h

?????文件??????16669??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\core_cm3.c

?????文件??????83226??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\core_cm3.h

?????文件??????15398??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_cl.s

?????文件??????15145??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_hd.s

?????文件??????15346??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_hd_vl.s

?????文件??????12079??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_ld.s

?????文件??????12080??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_ld.s.bak

?????文件??????13352??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_ld_vl.s

?????文件??????12458??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_md.s

?????文件??????13758??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_md_vl.s

?????文件??????15597??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\startup\arm\startup_stm32f10x_xl.s

?????文件?????633941??2017-08-03?11:46??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\stm32f10x.h

?????文件?????625606??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\stm32f10x.h~RF6912f5.TMP

?????文件?????633941??2017-07-31?15:47??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\stm32f10x.h~RF6db388.TMP

?????文件??????35463??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\system_stm32f10x.c

?????文件???????1987??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\CMSIS\system_stm32f10x.h

?????文件???????8762??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\STM32F10x_StdPeriph_Driver\inc\misc.h

?????文件??????21207??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\STM32F10x_StdPeriph_Driver\inc\stm32f10x_adc.h

?????文件???????7360??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\STM32F10x_StdPeriph_Driver\inc\stm32f10x_bkp.h

?????文件??????26862??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\STM32F10x_StdPeriph_Driver\inc\stm32f10x_can.h

?????文件???????6363??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\STM32F10x_StdPeriph_Driver\inc\stm32f10x_cec.h

?????文件???????2068??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\STM32F10x_StdPeriph_Driver\inc\stm32f10x_crc.h

?????文件??????14916??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\STM32F10x_StdPeriph_Driver\inc\stm32f10x_dac.h

?????文件???????3699??2016-08-08?19:14??800C_ONENET_HTTP_DEMO\Libraries\STM32F10x_StdPeriph_Driver\inc\stm32f10x_dbgmcu.h

............此處省略194個(gè)文件信息