ADC模块用的是RP1不用多说了，主要是脉冲模块，这个模块没考过

这个脉冲模块放出脉冲，主要能用TIM捕获到这个脉冲的高电平持续时间即可

CubMx配置：

脉冲模块的引脚与PB0相连，所以用PB0读取上升沿记的数和下降沿记的数，后前相减就是高电平记的数

CubeMx配置：

internal clock 内部时钟

input capture direct mode 输入捕获测量脉宽

channel3 通道3

类似GPIO INPUT读取外部电平

中断enable

预分配设置3200，1s记录1000000 / 100个数，那么记录一个数花费0.1ms

自动重装enable

kil5:

void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)  // 定时器捕获中断回调函数 

在触发上升沿或者下降沿的时候会进入这个中断函数，设置上升沿下降沿在polarity selection中

HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_3);	//读取计数器的值 

显示计数器的值

__HAL_TIM_SET_CAPTUREPOLARITY(&htim3,TIM_CHANNEL_3,TIM_ICPOLARITY_FALLING);	 // 设置触发条件 

设置下次中断为下降沿

代码：

#include "Function.h" #include "main.h" #include "oled.h" #include "i2c.h" #include "tim.h" #include   uint16_t ENDNUMBER = 0; uint16_t BEGINNUMBER = 0; uint16_t TIMSTATE = 0; char ARRAY1[20];  void OLED_Write(unsigned char type, unsigned char data){ 	unsigned char WriteData[2]; 	WriteData[0] = type; 	WriteData[1] = data; 	HAL_I2C_Master_Transmit(&hi2c3, 0x78, WriteData, 2, 0xff); } void Function_OledInit(unsigned char ms){ 	HAL_GPIO_WritePin(OLED_Power_GPIO_Port, OLED_Power_Pin, GPIO_PIN_RESET);   HAL_Delay(ms); 	OLED_Init(); }  void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim){   if(htim == &htim3){ 		if(TIMSTATE == 0){ 			TIMSTATE ++; 			BEGINNUMBER = HAL_TIM_ReadCapturedValue(&htim3, TIM_CHANNEL_3); 			__HAL_TIM_SET_CAPTUREPOLARITY(&htim3, TIM_CHANNEL_3, TIM_ICPOLARITY_FALLING); 		}else if(TIMSTATE == 1){ 			TIMSTATE ++; 			__HAL_TIM_SET_CAPTUREPOLARITY(&htim3, TIM_CHANNEL_3, TIM_ICPOLARITY_RISING); 		}else if(TIMSTATE == 2){ 			TIMSTATE ++; 			ENDNUMBER = HAL_TIM_ReadCapturedValue(&htim3, TIM_CHANNEL_3); 		} 	}   }  void Function_PuseCheck(){ 	if(TIMSTATE == 3){ 		sprintf(ARRAY1, "%.1f", (float) (ENDNUMBER - BEGINNUMBER) / 10); 		OLED_ShowString(0, (unsigned char* )ARRAY1); 		TIMSTATE = 0; 	}   HAL_Delay(500); }  void Function_MyMain(){ 	 Function_PuseCheck(); } 

HAL_TIM_IC_Start_IT(&htim3, TIM_CHANNEL_3); 

主函数一定要使能要不然进不了中断函数