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STM32 ADC采集通過DAC直接輸出,采集頻率最大700hz可完全不失真,700到4k,打點不完全,4k以上開始失真

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????時間???名稱
-----------?---------??----------?-----??----
?????文件??????17273??2010-06-07?10:25??STM32?ADC與DAC實驗?無DMA傳輸\CORE\core_cm3.c
?????文件??????85714??2011-02-09?14:59??STM32?ADC與DAC實驗?無DMA傳輸\CORE\core_cm3.h
?????文件??????15503??2011-03-10?10:52??STM32?ADC與DAC實驗?無DMA傳輸\CORE\startup_stm32f10x_hd.s
?????文件??????12765??2011-03-10?10:52??STM32?ADC與DAC實驗?無DMA傳輸\CORE\startup_stm32f10x_md.s
?????文件???????2820??2015-07-10?15:45??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\ADC\adc.c
?????文件????????532??2012-09-16?10:12??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\ADC\adc.h
?????文件???????1870??2015-07-09?10:10??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\DAC\dac.c
?????文件????????671??2012-09-16?14:13??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\DAC\dac.h
?????文件???????2365??2012-09-16?12:07??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\DMA\dma.c
?????文件????????725??2012-09-16?10:50??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\DMA\dma.h
?????文件???????1813??2012-09-13?15:05??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\KEY\key.c
?????文件???????1114??2012-09-13?15:26??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\KEY\key.h
?????文件??????16156??2012-08-25?14:01??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\LCD\font.h
?????文件??????82472??2015-07-08?22:26??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\LCD\lcd.c
?????文件???????9283??2014-02-20?18:27??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\LCD\lcd.h
?????文件???????1298??2012-09-13?13:13??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\LED\led.c
?????文件????????638??2012-09-13?09:45??STM32?ADC與DAC實驗?無DMA傳輸\HARDWARE\LED\led.h
?????文件????????399??2011-04-23?10:24??STM32?ADC與DAC實驗?無DMA傳輸\keilkilll.bat
?????文件?????297335??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\adc.crf
?????文件????????872??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\adc.d
?????文件?????321876??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\adc.o
?????文件????????541??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\adc.__i
?????文件???????3578??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\core_cm3.crf
?????文件????????101??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\core_cm3.d
?????文件??????10632??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\core_cm3.o
?????文件????????553??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\core_cm3.__i
?????文件?????408276??2015-07-10?22:30??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\DAC.axf
?????文件?????296623??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\dac.crf
?????文件????????833??2015-07-10?22:29??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\dac.d
?????文件??????52685??2015-07-10?22:30??STM32?ADC與DAC實驗?無DMA傳輸\OBJ\DAC.hex
............此處省略200個文件信息
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