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代碼實(shí)現(xiàn)了DHT22讀取溫度和濕度值(帶小數(shù)),并通過串口1打印出來,DHT22驅(qū)動(dòng)代碼已做好封裝,方便移植,IO口接的PA4,這個(gè)在dht22.h文件中自己修改,代碼已共享

代碼片段和文件信息
/**************************************************************************//**
?*?@file?????core_cm3.c
?*?@brief????CMSIS?Cortex-M3?Core?Peripheral?Access?layer?Source?File
?*?@version??V1.30
?*?@date?????30.?October?2009
?*
?*?@note
?*?Copyright?(C)?2009?ARM?Limited.?All?rights?reserved.
?*
?*?@par
?*?ARM?Limited?(ARM)?is?supplying?this?software?for?use?with?Cortex-M?
?*?processor?based?microcontrollers.??This?file?can?be?freely?distributed?
?*?within?development?tools?that?are?supporting?such?ARM?based?processors.?
?*
?*?@par
?*?THIS?SOFTWARE?IS?PROVIDED?“AS?IS“.??NO?WARRANTIES?WHETHER?EXPRESS?IMPLIED
?*?OR?STATUTORY?INCLUDING?BUT?NOT?LIMITED?TO?IMPLIED?WARRANTIES?OF
?*?MERCHANTABILITY?AND?FITNESS?FOR?A?PARTICULAR?PURPOSE?APPLY?TO?THIS?SOFTWARE.
?*?ARM?SHALL?NOT?IN?ANY?CIRCUMSTANCES?BE?LIABLE?FOR?SPECIAL?INCIDENTAL?OR
?*?CONSEQUENTIAL?DAMAGES?FOR?ANY?REASON?WHATSOEVER.
?*
?******************************************************************************/
#include?
/*?define?compiler?specific?symbols?*/
#if?defined?(?__CC_ARM???)
??#define?__ASM????????????__asm??????????????????????????????????????/*!??#define?__INLINE?????????__inline???????????????????????????????????/*!
#elif?defined?(?__ICCARM__?)
??#define?__ASM???????????__asm???????????????????????????????????????/*!??#define?__INLINE????????inline??????????????????????????????????????/*!
#elif?defined???(??__GNUC__??)
??#define?__ASM????????????__asm??????????????????????????????????????/*!??#define?__INLINE?????????inline?????????????????????????????????????/*!
#elif?defined???(??__TASKING__??)
??#define?__ASM????????????__asm??????????????????????????????????????/*!??#define?__INLINE?????????inline?????????????????????????????????????/*!
#endif
/*?###################??Compiler?specific?Intrinsics??###########################?*/
#if?defined?(?__CC_ARM???)?/*------------------RealView?Compiler?-----------------*/
/*?ARM?armcc?specific?functions?*/
/**
?*?@brief??Return?the?Process?Stack?Pointer
?*
?*?@return?ProcessStackPointer
?*
?*?Return?the?actual?process?stack?pointer
?*/
__ASM?uint32_t?__get_PSP(void)
{
??mrs?r0?psp
??bx?lr
}
/**
?*?@brief??Set?the?Process?Stack?Pointer
?*
?*?@param??topOfProcStack??Process?Stack?Pointer
?*
?*?Assign?the?value?ProcessStackPointer?to?the?MSP?
?*?(process?stack?pointer)?Cortex?processor?register
?*/
__ASM?void?__set_PSP(uint32_t?topOfProcStack)
{
??msr?psp?r0
??bx?lr
}
/**
?*?@brief??Return?the?Main?Stack?Pointer
?*
?*?@return?Main?Stack?Pointer
?*
?*?Return?the?curren
?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件??????17273??2010-06-07?10:25??stm32f103?DHT22?程序\CORE\core_cm3.c
?????文件??????85714??2011-02-09?14:59??stm32f103?DHT22?程序\CORE\core_cm3.h
?????文件??????15503??2011-03-10?10:52??stm32f103?DHT22?程序\CORE\startup_stm32f10x_hd.s
?????文件??????12765??2011-03-10?10:52??stm32f103?DHT22?程序\CORE\startup_stm32f10x_md.s
?????文件???????2290??2018-05-29?16:41??stm32f103?DHT22?程序\HARDWARE\DHT22\dht22.c
?????文件????????731??2018-05-29?16:41??stm32f103?DHT22?程序\HARDWARE\DHT22\dht22.h
?????文件???????1298??2014-03-20?18:56??stm32f103?DHT22?程序\HARDWARE\LED\led.c
?????文件????????640??2014-03-20?19:03??stm32f103?DHT22?程序\HARDWARE\LED\led.h
?????文件????????399??2011-04-23?10:24??stm32f103?DHT22?程序\keilkilll.bat
?????文件???????3940??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\core_cm3.crf
?????文件????????102??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\core_cm3.d
?????文件??????11200??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\core_cm3.o
?????文件?????247375??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\delay.crf
?????文件????????593??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\delay.d
?????文件?????265660??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\delay.o
?????文件?????252656??2018-05-29?16:41??stm32f103?DHT22?程序\OBJ\dht22.crf
?????文件????????697??2018-05-29?16:41??stm32f103?DHT22?程序\OBJ\dht22.d
?????文件?????270400??2018-05-29?16:41??stm32f103?DHT22?程序\OBJ\dht22.o
?????文件?????305752??2018-05-29?16:42??stm32f103?DHT22?程序\OBJ\LED.axf
?????文件???????1204??2018-05-29?16:42??stm32f103?DHT22?程序\OBJ\LED.build_log.htm
?????文件?????246937??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\led.crf
?????文件????????563??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\led.d
?????文件??????29555??2018-05-29?16:42??stm32f103?DHT22?程序\OBJ\LED.hex
?????文件??????69941??2018-05-29?16:42??stm32f103?DHT22?程序\OBJ\LED.htm
?????文件????????529??2018-05-29?16:42??stm32f103?DHT22?程序\OBJ\LED.lnp
?????文件?????264532??2018-05-29?16:39??stm32f103?DHT22?程序\OBJ\led.o
?????文件??????????0??2018-05-29?16:37??stm32f103?DHT22?程序\OBJ\LED.plg
?????文件????????479??2018-05-29?16:38??stm32f103?DHT22?程序\OBJ\LED.sct
?????文件??????12397??2018-05-29?16:42??stm32f103?DHT22?程序\OBJ\LED_Target?1.dep
?????文件?????252113??2018-05-29?16:42??stm32f103?DHT22?程序\OBJ\main.crf
............此處省略114個(gè)文件信息
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