STM32用外部时钟模式测频率

cmz

之前参考@yyx112358 的测频率，用标准库是实现了，但是不知道是怎么回事就实现了，后来看看中文参考手册，发现有这个功能，就是不会驱动。后来就开始学hal库，还是hal库对底层的驱动好用。要不然标准库用定时器就只会用典型的那几个功能而已频率，25MHZ下还是不错的

yyx112358

谢谢分享。HAL库确实是好用，是未来的方向。如果是用的CUBE的话，希望把CUBE的ioc配置文件分享一下
就是效率有点低。可以拿来快速开发，然后用寄存器针对性优化。
BTW：标准库可以进对应的.h文件看有哪些函数orz
[mw_shl_code=c,true]/* TimeBase management ********************************************************/
void TIM_DeInit(TIM_TypeDef* TIMx);
void TIM_TimeBaseInit(TIM_TypeDef* TIMx, TIM_TimeBaseInitTypeDef* TIM_TimeBaseInitStruct);
void TIM_TimeBaseStructInit(TIM_TimeBaseInitTypeDef* TIM_TimeBaseInitStruct);
void TIM_PrescalerConfig(TIM_TypeDef* TIMx, uint16_t Prescaler, uint16_t TIM_PSCReloadMode);
void TIM_CounterModeConfig(TIM_TypeDef* TIMx, uint16_t TIM_CounterMode);
void TIM_SetCounter(TIM_TypeDef* TIMx, uint32_t Counter);
void TIM_SetAutoreload(TIM_TypeDef* TIMx, uint32_t Autoreload);
uint32_t TIM_GetCounter(TIM_TypeDef* TIMx);
uint16_t TIM_GetPrescaler(TIM_TypeDef* TIMx);
void TIM_UpdateDisableConfig(TIM_TypeDef* TIMx, FunctionalState NewState);
void TIM_UpdateRequestConfig(TIM_TypeDef* TIMx, uint16_t TIM_UpdateSource);
void TIM_ARRPreloadConfig(TIM_TypeDef* TIMx, FunctionalState NewState);
void TIM_SelectOnePulseMode(TIM_TypeDef* TIMx, uint16_t TIM_OPMode);
void TIM_SetClockDivision(TIM_TypeDef* TIMx, uint16_t TIM_CKD);
void TIM_Cmd(TIM_TypeDef* TIMx, FunctionalState NewState);

/* Output Compare management **************************************************/
void TIM_OC1Init(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct);
void TIM_OC2Init(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct);
void TIM_OC3Init(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct);
void TIM_OC4Init(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct);
void TIM_OCStructInit(TIM_OCInitTypeDef* TIM_OCInitStruct);
void TIM_SelectOCxM(TIM_TypeDef* TIMx, uint16_t TIM_Channel, uint16_t TIM_OCMode);
void TIM_SetCompare1(TIM_TypeDef* TIMx, uint32_t Compare1);
void TIM_SetCompare2(TIM_TypeDef* TIMx, uint32_t Compare2);
void TIM_SetCompare3(TIM_TypeDef* TIMx, uint32_t Compare3);
void TIM_SetCompare4(TIM_TypeDef* TIMx, uint32_t Compare4);
void TIM_ForcedOC1Config(TIM_TypeDef* TIMx, uint16_t TIM_ForcedAction);
void TIM_ForcedOC2Config(TIM_TypeDef* TIMx, uint16_t TIM_ForcedAction);
void TIM_ForcedOC3Config(TIM_TypeDef* TIMx, uint16_t TIM_ForcedAction);
void TIM_ForcedOC4Config(TIM_TypeDef* TIMx, uint16_t TIM_ForcedAction);
void TIM_OC1PreloadConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCPreload);
void TIM_OC2PreloadConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCPreload);
void TIM_OC3PreloadConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCPreload);
void TIM_OC4PreloadConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCPreload);
void TIM_OC1FastConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCFast);
void TIM_OC2FastConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCFast);
void TIM_OC3FastConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCFast);
void TIM_OC4FastConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCFast);
void TIM_ClearOC1Ref(TIM_TypeDef* TIMx, uint16_t TIM_OCClear);
void TIM_ClearOC2Ref(TIM_TypeDef* TIMx, uint16_t TIM_OCClear);
void TIM_ClearOC3Ref(TIM_TypeDef* TIMx, uint16_t TIM_OCClear);
void TIM_ClearOC4Ref(TIM_TypeDef* TIMx, uint16_t TIM_OCClear);
void TIM_OC1PolarityConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCPolarity);
void TIM_OC1NPolarityConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCNPolarity);
void TIM_OC2PolarityConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCPolarity);
void TIM_OC2NPolarityConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCNPolarity);
void TIM_OC3PolarityConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCPolarity);
void TIM_OC3NPolarityConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCNPolarity);
void TIM_OC4PolarityConfig(TIM_TypeDef* TIMx, uint16_t TIM_OCPolarity);
void TIM_CCxCmd(TIM_TypeDef* TIMx, uint16_t TIM_Channel, uint16_t TIM_CCx);
void TIM_CCxNCmd(TIM_TypeDef* TIMx, uint16_t TIM_Channel, uint16_t TIM_CCxN);

/* Input Capture management ***************************************************/
void TIM_ICInit(TIM_TypeDef* TIMx, TIM_ICInitTypeDef* TIM_ICInitStruct);
void TIM_ICStructInit(TIM_ICInitTypeDef* TIM_ICInitStruct);
void TIM_PWMIConfig(TIM_TypeDef* TIMx, TIM_ICInitTypeDef* TIM_ICInitStruct);
uint32_t TIM_GetCapture1(TIM_TypeDef* TIMx);
uint32_t TIM_GetCapture2(TIM_TypeDef* TIMx);
uint32_t TIM_GetCapture3(TIM_TypeDef* TIMx);
uint32_t TIM_GetCapture4(TIM_TypeDef* TIMx);
void TIM_SetIC1Prescaler(TIM_TypeDef* TIMx, uint16_t TIM_ICPSC);
void TIM_SetIC2Prescaler(TIM_TypeDef* TIMx, uint16_t TIM_ICPSC);
void TIM_SetIC3Prescaler(TIM_TypeDef* TIMx, uint16_t TIM_ICPSC);
void TIM_SetIC4Prescaler(TIM_TypeDef* TIMx, uint16_t TIM_ICPSC);

/* Advanced-control timers (TIM1 and TIM8) specific features ******************/
void TIM_BDTRConfig(TIM_TypeDef* TIMx, TIM_BDTRInitTypeDef *TIM_BDTRInitStruct);
void TIM_BDTRStructInit(TIM_BDTRInitTypeDef* TIM_BDTRInitStruct);
void TIM_CtrlPWMOutputs(TIM_TypeDef* TIMx, FunctionalState NewState);
void TIM_SelectCOM(TIM_TypeDef* TIMx, FunctionalState NewState);
void TIM_CCPreloadControl(TIM_TypeDef* TIMx, FunctionalState NewState);

/* Interrupts, DMA and flags management ***************************************/
void TIM_ITConfig(TIM_TypeDef* TIMx, uint16_t TIM_IT, FunctionalState NewState);
void TIM_GenerateEvent(TIM_TypeDef* TIMx, uint16_t TIM_EventSource);
FlagStatus TIM_GetFlagStatus(TIM_TypeDef* TIMx, uint16_t TIM_FLAG);
void TIM_ClearFlag(TIM_TypeDef* TIMx, uint16_t TIM_FLAG);
ITStatus TIM_GetITStatus(TIM_TypeDef* TIMx, uint16_t TIM_IT);
void TIM_ClearITPendingBit(TIM_TypeDef* TIMx, uint16_t TIM_IT);
void TIM_DMAConfig(TIM_TypeDef* TIMx, uint16_t TIM_DMABase, uint16_t TIM_DMABurstLength);
void TIM_DMACmd(TIM_TypeDef* TIMx, uint16_t TIM_DMASource, FunctionalState NewState);
void TIM_SelectCCDMA(TIM_TypeDef* TIMx, FunctionalState NewState);

/* Clocks management **********************************************************/
void TIM_InternalClockConfig(TIM_TypeDef* TIMx);
void TIM_ITRxExternalClockConfig(TIM_TypeDef* TIMx, uint16_t TIM_InputTriggerSource);
void TIM_TIxExternalClockConfig(TIM_TypeDef* TIMx, uint16_t TIM_TIxExternalCLKSource,
                                uint16_t TIM_ICPolarity, uint16_t ICFilter);
void TIM_ETRClockMode1Config(TIM_TypeDef* TIMx, uint16_t TIM_ExtTRGPrescaler, uint16_t TIM_ExtTRGPolarity,
                             uint16_t ExtTRGFilter);
void TIM_ETRClockMode2Config(TIM_TypeDef* TIMx, uint16_t TIM_ExtTRGPrescaler,
                             uint16_t TIM_ExtTRGPolarity, uint16_t ExtTRGFilter);

/* Synchronization management *************************************************/
void TIM_SelectInputTrigger(TIM_TypeDef* TIMx, uint16_t TIM_InputTriggerSource);
void TIM_SelectOutputTrigger(TIM_TypeDef* TIMx, uint16_t TIM_TRGOSource);
void TIM_SelectSlaveMode(TIM_TypeDef* TIMx, uint16_t TIM_SlaveMode);
void TIM_SelectMasterSlaveMode(TIM_TypeDef* TIMx, uint16_t TIM_MasterSlaveMode);
void TIM_ETRConfig(TIM_TypeDef* TIMx, uint16_t TIM_ExtTRGPrescaler, uint16_t TIM_ExtTRGPolarity,
                   uint16_t ExtTRGFilter);

/* Specific interface management **********************************************/   
void TIM_EncoderInterfaceConfig(TIM_TypeDef* TIMx, uint16_t TIM_EncoderMode,
                                uint16_t TIM_IC1Polarity, uint16_t TIM_IC2Polarity);
void TIM_SelectHallSensor(TIM_TypeDef* TIMx, FunctionalState NewState);

/* Specific remapping management **********************************************/
void TIM_RemapConfig(TIM_TypeDef* TIMx, uint16_t TIM_Remap);[/mw_shl_code]

cmz

工程就包括ioc文件了的