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  • 大小: 3.34MB
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    發布日期: 2023-08-17
  • 語言: 其他
  • 標簽: STM32F103??

資源簡介

STM32F103的PWM輸入捕獲例程，適合新手學習 stm32的定時器除了TIM6和TIM7外，其他定時器都可以產生PWM輸出。其中高級定時器TIM1和TIM8可以產生多達7路的PWM輸出。通用定時器可以產生4路的PWM輸出。 （自動裝載寄存器 (TIMx_ARR)、計數器寄存器(TIMx_CNT) 、預分頻器寄存器 (TIMx_PSC)、捕獲/比較寄存器（TIMx_CCR1~4）） ? 捕獲/比較寄存器（TIMx_CCR1~4） 此寄存器共有四個，4個寄存器都差不多。 在輸出模式下，該寄存器的值與CNT的值比較，根據比較結果產生相應的動作。因此，通過修改這個寄存器的值來控制PWM的輸出脈寬。要實現PWM脈沖的占空比可調的原理就是不斷改變這個寄存器的值。 ? 捕獲/比較使能寄存器（TIMx_CCER） 該寄存器控制著各個輸入輸出通道的開關，要想PWM從I/O口輸出，，對應的為必須設置為‘0’。 ? 捕獲/比較模式寄存器（TIMx_CCMR1/2） 該寄存器共有兩個。TIMx_CCMR1控制CH1和CH2，另外一個控制CH3和CH4。此寄存器應注意同一個位在輸出模式和輸入模式下功能是不同的。

資源截圖

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
-----------?---------??----------?-----??----
?????目錄???????????0??2016-12-29?19:21??題3?輸入捕獲\
?????目錄???????????0??2016-12-29?19:21??題3?輸入捕獲\CORE\
?????文件???????17273??2010-06-07?10:25??題3?輸入捕獲\CORE\core_cm3.c
?????文件???????85714??2011-02-09?14:59??題3?輸入捕獲\CORE\core_cm3.h
?????文件???????15503??2011-03-10?10:52??題3?輸入捕獲\CORE\startup_stm32f10x_hd.s
?????目錄???????????0??2016-12-29?19:21??題3?輸入捕獲\HARDWARE\
?????目錄???????????0??2016-12-29?20:22??題3?輸入捕獲\HARDWARE\EXTI\
?????文件????????1575??2016-12-29?20:22??題3?輸入捕獲\HARDWARE\EXTI\exti.c
?????文件?????????152??2016-12-28?11:05??題3?輸入捕獲\HARDWARE\EXTI\exti.h
?????目錄???????????0??2016-12-29?20:22??題3?輸入捕獲\HARDWARE\KEY\
?????文件?????????434??2016-12-29?20:22??題3?輸入捕獲\HARDWARE\KEY\key.c
?????文件????????1186??2016-12-29?20:22??題3?輸入捕獲\HARDWARE\KEY\key.h
?????目錄???????????0??2016-12-29?19:21??題3?輸入捕獲\HARDWARE\LED\
?????文件?????????772??2016-12-25?19:45??題3?輸入捕獲\HARDWARE\LED\led.c
?????文件?????????638??2012-09-13?09:45??題3?輸入捕獲\HARDWARE\LED\led.h
?????目錄???????????0??2016-12-29?19:58??題3?輸入捕獲\HARDWARE\TIMER\
?????文件???????11635??2016-12-29?19:58??題3?輸入捕獲\HARDWARE\TIMER\timer.c
?????文件?????????394??2016-12-28?13:06??題3?輸入捕獲\HARDWARE\TIMER\timer.h
?????目錄???????????0??2016-12-29?20:22??題3?輸入捕獲\OBJ\
?????文件??????????19??2016-12-29?19:56??題3?輸入捕獲\OBJ\ExtDll.iex
?????文件??????351716??2016-12-29?20:22??題3?輸入捕獲\OBJ\PWM.axf
?????文件????????1483??2016-12-29?20:22??題3?輸入捕獲\OBJ\PWM.build_log.htm
?????文件???????27387??2016-12-29?20:22??題3?輸入捕獲\OBJ\PWM.hex
?????文件???????76499??2016-12-29?20:22??題3?輸入捕獲\OBJ\PWM.htm
?????文件?????????563??2016-12-29?20:22??題3?輸入捕獲\OBJ\PWM.lnp
?????文件?????????479??2016-11-08?12:16??題3?輸入捕獲\OBJ\PWM.sct
?????文件???????28353??2016-12-29?20:22??題3?輸入捕獲\OBJ\PWM_PWM.dep
?????文件????????3942??2016-12-29?19:50??題3?輸入捕獲\OBJ\core_cm3.crf
?????文件?????????104??2016-12-29?19:50??題3?輸入捕獲\OBJ\core_cm3.d
?????文件???????11292??2016-12-29?19:50??題3?輸入捕獲\OBJ\core_cm3.o
?????文件??????349955??2016-11-08?12:16??題3?輸入捕獲\OBJ\delay.crf
............此處省略125個文件信息

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