旋轉編碼器計次
1，創建 .C .H 文件
Count_Sonser.c
Count_Sonser.h
2，包含頭文件
#include "ch32v30x.h"
//#include "debug.h"
#include "Count_Sonser.h"
注意：如果不包含第一第二個頭文件uint、int這些定義就會報錯。
3，配置CountSonser_Init()相關
/*********************************************************************
1,開啟GPIO時鐘、AFIO時鐘
2，初始化GPIO
3，AFIO復用GPIO到EXTI ?
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? -->GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource14);
4,初始化EXTI
5，給NVIC分組，一個工程只能分一次組。
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? -->NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
6，初始化NVIC
7，聲明中斷通道是一個中斷 ? ? ? ? ?-->void EXTI0_IRQHandler(void)__attribute__((interrupt("WCH-Interrupt-fast")));
*/
#include "ch32v30x.h"
#include "Count_Sonser.h"
#include "debug.h"/*********************************************************************
1,開啟GPIO時鐘、AFIO時鐘
2，初始化GPIO
3，AFIO復用GPIO到EXTI -->GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource14);
4,初始化EXTI
5，給NVIC分組 -->NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
6，初始化NVIC
7，聲明中斷通道是一個中斷 -->void EXTI0_IRQHandler(void)__attribute__((interrupt("WCH-Interrupt-fast")));
*/int16_t Get_Sonser ;
void CountSonser_Init(void)
{RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);//開啟AFIO、GPIO時鐘RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);GPIO_InitTypeDef GPIO_InitStruct = {0};GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU; //上拉輸入模式GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOB, &GPIO_InitStruct);GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource0); //AFIO復用EXTI-->EXTI_Lin0;GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource1); //AFIO復用EXTI-->EXTI_Lin1;EXTI_InitTypeDef EXTI_InitStruct = {0};EXTI_InitStruct.EXTI_Line = EXTI_Line0 | EXTI_Line1; //通道0和通道1EXTI_InitStruct.EXTI_LineCmd = ENABLE;EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt; //觸發模式配置為中斷模式EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling; //下降沿觸發EXTI_Init(&EXTI_InitStruct);NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //中斷分組2，先占優先級和響應優先級都配置為2NVIC_InitTypeDef NVIC_InitStruct = {0};NVIC_InitStruct.NVIC_IRQChannel = EXTI0_IRQn; //EXTI中斷0NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1; //先占優先級NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1; //響應優先級1NVIC_Init(&NVIC_InitStruct);NVIC_InitStruct.NVIC_IRQChannel = EXTI1_IRQn; //EXTI中斷1NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1; //先占優先級NVIC_InitStruct.NVIC_IRQChannelSubPriority = 2; //響應優先級2NVIC_Init(&NVIC_InitStruct);
}
//返回Get_Sonser的值
int16_t GetSonSer(void)
{int16_t temp ;temp = Get_Sonser;Get_Sonser = 0;return temp;
}
/** 聲明這是一個中斷，（"WCH-Interrupt-fast"）說明是個高速中斷* 這句不能少* */
void EXTI0_IRQHandler(void)__attribute__((interrupt("WCH-Interrupt-fast")));
void EXTI0_IRQHandler(void)
{if(EXTI_GetITStatus(EXTI_Line0) == SET) //判斷中斷掛起標志位{if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_0) == Bit_RESET){if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_1) == Bit_RESET){Get_Sonser--;}}}EXTI_ClearITPendingBit(EXTI_Line0); //清除中斷掛起標志位
}void EXTI1_IRQHandler(void)__attribute__((interrupt("WCH-Interrupt-fast")));//聲明這是一個中斷，（"WCH-Interrupt-fast"）說明是個高速中斷
void EXTI1_IRQHandler(void)
{if(EXTI_GetITStatus(EXTI_Line1) == SET){if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_1) == Bit_RESET){if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_0) == Bit_RESET){Get_Sonser++;}}}EXTI_ClearITPendingBit(EXTI_Line1);
}
4，實驗現象?
查詢)
