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STM32通過(guò)軟件模擬 IIC 驅(qū)動(dòng)溫濕度傳感器HTU21D,庫(kù)函數(shù)實(shí)現(xiàn)??墒褂糜跍y(cè)試,通過(guò)軟件來(lái)模擬 I2C 的時(shí)序邏輯。

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
-----------?---------??----------?-----??----
?????目錄???????????0??2018-04-21?23:25??02.I2C_Software_Htu21d\
?????目錄???????????0??2018-04-21?23:16??02.I2C_Software_Htu21d\CORE\
?????文件???????17273??2010-06-07?10:25??02.I2C_Software_Htu21d\CORE\core_cm3.c
?????文件???????85714??2011-02-09?14:59??02.I2C_Software_Htu21d\CORE\core_cm3.h
?????文件???????15503??2011-03-10?10:52??02.I2C_Software_Htu21d\CORE\startup_stm32f10x_hd.s
?????目錄???????????0??2018-04-21?23:16??02.I2C_Software_Htu21d\HARDWARE\
?????目錄???????????0??2018-04-21?23:21??02.I2C_Software_Htu21d\HARDWARE\HTU21D\
?????文件????????3603??2018-04-21?23:21??02.I2C_Software_Htu21d\HARDWARE\HTU21D\htu21d.c
?????文件?????????823??2018-04-21?19:59??02.I2C_Software_Htu21d\HARDWARE\HTU21D\htu21d.h
?????目錄???????????0??2018-04-21?23:18??02.I2C_Software_Htu21d\HARDWARE\I2C\
?????文件????????6096??2018-04-21?23:18??02.I2C_Software_Htu21d\HARDWARE\I2C\software_i2c.c
?????文件????????2163??2018-04-21?23:18??02.I2C_Software_Htu21d\HARDWARE\I2C\software_i2c.h
?????目錄???????????0??2018-04-21?23:16??02.I2C_Software_Htu21d\HARDWARE\LCD\
?????文件???????35016??2014-01-02?17:22??02.I2C_Software_Htu21d\HARDWARE\LCD\FONT.H
?????文件???????31163??2018-04-21?11:32??02.I2C_Software_Htu21d\HARDWARE\LCD\lcd.c
?????文件????????8193??2018-04-21?11:32??02.I2C_Software_Htu21d\HARDWARE\LCD\lcd.h
?????目錄???????????0??2018-04-21?23:16??02.I2C_Software_Htu21d\HARDWARE\LED\
?????文件?????????561??2018-04-06?12:00??02.I2C_Software_Htu21d\HARDWARE\LED\led.c
?????文件?????????148??2018-03-27?23:16??02.I2C_Software_Htu21d\HARDWARE\LED\led.h
?????文件?????????399??2011-04-23?10:24??02.I2C_Software_Htu21d\keilkilll.bat
?????目錄???????????0??2018-04-21?23:16??02.I2C_Software_Htu21d\STM32F10X_FWLib\
?????目錄???????????0??2018-04-21?23:23??02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\
?????文件????????8982??2011-03-10?10:47??02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\misc.h
?????文件???????20175??2012-09-13?12:23??02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\stm32f10x_gpio.h
?????文件???????30452??2011-03-10?10:47??02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\stm32f10x_rcc.h
?????文件???????16548??2012-09-11?21:49??02.I2C_Software_Htu21d\STM32F10X_FWLib\inc\stm32f10x_usart.h
?????目錄???????????0??2018-04-21?23:23??02.I2C_Software_Htu21d\STM32F10X_FWLib\src\
?????文件????????7046??2011-03-10?10:47??02.I2C_Software_Htu21d\STM32F10X_FWLib\src\misc.c
?????文件???????23221??2011-03-11?17:43??02.I2C_Software_Htu21d\STM32F10X_FWLib\src\stm32f10x_gpio.c
?????文件???????51271??2011-03-10?10:47??02.I2C_Software_Htu21d\STM32F10X_FWLib\src\stm32f10x_rcc.c
?????文件???????38308??2011-03-10?10:47??02.I2C_Software_Htu21d\STM32F10X_FWLib\src\stm32f10x_usart.c
............此處省略26個(gè)文件信息
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