/***************STM32F103C8T6**********************
?*?文件名??：DHT11.c
?*?描述????：DHT11傳感器
?*?備注????:?DHT11溫度濕度傳感器
?*?接口????：PA11-DATA

********************LIGEN*************************/


#include?“delay.h“
#include?“dht11.h“
??????
//復位DHT11
void?DHT11_Reset（void）	???
{?????????????????
	DHT_Direction_O;?	
????O_DHT_DAT?=?0;?	
????DelayMs（20）;????	
????O_DHT_DAT?=?1;?	
	DelayUs（30）;?????
}

//等待DHT11的回應
//返回1:未檢測到DHT11的存在
//返回0:存在
uint8_t?DHT11_IsOnline（void）?	???
{???
	uint8_t?retry?=?0;
	DHT_Direction_I;
	
????while?（I_DHT_DAT?&&?retry?	{
		retry?++;
		DelayUs（1）;
	}
	
	if（retry?>=?100）
	{
		return?1;
	}
	else
	{
		retry?=?0;
	}
	
????while?（!I_DHT_DAT?&&?retry?	{
		retry?++;
		DelayUs（1）;
	}
	
	if（retry?>=?100）
	{
		return?1;
	}	????
	return?0;
}

uint8_t?DHT11_ReadBit（void）?			?
{
?	uint8_t?retry?=?0;
	while（I_DHT_DAT?&&?retry?	{
		retry?++;
		DelayUs（1）;
	}
	retry?=?0;
	while（!I_DHT_DAT?&&?retry?	{
		retry?++;
		DelayUs（1）;
	}
	
	DelayUs（40）;//等待40us
	
	if（I_DHT_DAT）
	{
		return?1;
	}
	else?
	{
		return?0;	
	}		
}


uint8_t?DHT11_ReadByte（void）????
{????????
????uint8_t?idat;
????dat?=?0;
	for?（i?=?0;?i?	{
???		dat?<<=?1;?
	????dat?|=?DHT11_ReadBit（）;
????}						????
????return?dat;
}

//從DHT11讀取一次數據
//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
uint8_t?DHT11_Read_Data（uint8_t?*tempuint8_t?*humi）????
{????????
?	uint8_t?buf[5];
	uint8_t?i;
	
	DHT11_Reset（）;
	
	if（DHT11_IsOnline（）?==?0）
	{
		for（i?=?0;?i?		{
			buf[i]?=?DHT11_ReadByte（）;
		}
		if（（buf[0]?+?buf[1]?+?buf[2]?+?buf[3]）?==?buf[4]）
		{
			*humi?=?buf[0];
			*temp?=?buf[2];
		}
	}
	else?
	{
		return?1;
	}
	
	return?0;	????
}
?
void?DHT11Configuration（void）
{	?
?	GPIO_InitTypeDef??MyGPIO;
?	
?	RCC_APB2PeriphClockCmd（DHTCLKLINE?ENABLE）;	?
	
?	MyGPIO.GPIO_Pin?	=?DHT_DAT_Pin;				?
?	MyGPIO.GPIO_Mode?	=?GPIO_Mode_Out_PP;?		?
?	MyGPIO.GPIO_Speed?	=?GPIO_Speed_50MHz;
?	GPIO_Init（DHTPORT?&MyGPIO）;				?
	O_DHT_DAT?=?1;		
			????
	DHT11_Reset（）;??//復位DHT11
}?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2301??2020-02-17?10:49??STM32FO103C8T6-DHT11溫濕度傳感器\1.主要代碼\dht11.c

?????文件????????602??2020-03-11?21:28??STM32FO103C8T6-DHT11溫濕度傳感器\1.主要代碼\dht11.h

?????文件??????17273??2016-11-08?08:23??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\core_cm3.c

?????文件??????85714??2016-11-08?08:23??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\core_cm3.h

?????文件??????15766??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\startup\arm\startup_stm32f10x_cl.s

?????文件??????15656??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\startup\arm\startup_stm32f10x_hd.s

?????文件??????15692??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\startup\arm\startup_stm32f10x_hd_vl.s

?????文件??????12376??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\startup\arm\startup_stm32f10x_ld.s

?????文件??????13656??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\startup\arm\startup_stm32f10x_ld_vl.s

?????文件??????12765??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\startup\arm\startup_stm32f10x_md.s

?????文件??????14073??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\startup\arm\startup_stm32f10x_md_vl.s

?????文件??????15955??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\startup\arm\startup_stm32f10x_xl.s

?????文件?????633941??2019-09-30?23:17??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\stm32f10x.h

?????文件???????3259??2016-11-08?08:23??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\stm32f10x_conf.h

?????文件???????6872??2017-01-16?14:11??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\stm32f10x_it.c

?????文件???????2086??2016-11-08?08:23??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\stm32f10x_it.h

?????文件??????36842??2016-11-08?08:23??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\system_stm32f10x.c

?????文件???????2085??2016-11-08?08:23??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\core\system_stm32f10x.h

?????文件???????6956??2015-12-10?17:06??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\DebugConfig\STM32F103_STM32F103C8_1.0.0.dbgconf

?????文件???????6956??2015-12-10?17:06??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\DebugConfig\STM32F103_STM32F103CB.dbgconf

?????文件????????339??2020-02-17?00:47??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\EventRecorderStub.scvd

?????文件???????8982??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\misc.h

?????文件??????21690??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\stm32f10x_adc.h

?????文件???????7555??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\stm32f10x_bkp.h

?????文件??????27559??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\stm32f10x_can.h

?????文件???????6573??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\stm32f10x_cec.h

?????文件???????2162??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\stm32f10x_crc.h

?????文件??????15233??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\stm32f10x_dac.h

?????文件???????3818??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\stm32f10x_dbgmcu.h

?????文件??????20754??2016-11-08?08:24??STM32FO103C8T6-DHT11溫濕度傳感器\2.參考程序\終端\fwlib\inc\stm32f10x_dma.h

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