1.主函数(main.c)代码：
#include "stm32f10x.h" // Device header #include "Delay.h" #include "OLED.h" #include "CountSensor.h" int main(void) { OLED_Init(); OLED_ShowString(1,1,"Count:"); CountSensor_Init(); while(1) { OLED_ShowNum(2,1,CountSensor_Get(),4); } }
注：该处警告是C99协议，无视即可
2.CountSensor.c代码部分：
#include "stm32f10x.h" // Device header uint16_t CountSensor_Count; void CountSensor_Init(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); GPIO_InitTypeDef GPIO_InitStruct; GPIO_InitStruct.GPIO_Mode=GPIO_Mode_IPU; GPIO_InitStruct.GPIO_Pin=GPIO_Pin_14; GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOB,&GPIO_InitStruct); GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource14); EXTI_InitTypeDef EXTI_InitStruct; EXTI_InitStruct.EXTI_Line=EXTI_Line14; EXTI_InitStruct.EXTI_LineCmd=ENABLE; EXTI_InitStruct.EXTI_Mode=EXTI_Mode_Interrupt; EXTI_InitStruct.EXTI_Trigger=EXTI_Trigger_Falling; EXTI_Init(&EXTI_InitStruct); NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); NVIC_InitTypeDef NVIC_InitStruct; NVIC_InitStruct.NVIC_IRQChannel=EXTI15_10_IRQn; NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE; NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=1; NVIC_InitStruct.NVIC_IRQChannelSubPriority=1; NVIC_Init(&NVIC_InitStruct); } void EXTI15_10_IRQHandler(void) { if(EXTI_GetITStatus(EXTI_Line14)==SET) { if (GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_14) == 0) { CountSensor_Count ++; } EXTI_ClearITPendingBit(EXTI_Line14); } } uint16_t CountSensor_Get(void) { return CountSensor_Count; }
3.CountSensor.h代码部分：
#ifndef __COUNT_SENSOR_H #define __COUNT_SENSOR_H uint16_t CountSensor_Get(void); void EXTI15_10_IRQHandler(void); void CountSensor_Init(void); #endif
