void Configure_PA(void) {
GPIO_InitTypeDef GPIO_InitStruct;
EXTI_InitTypeDef EXTI_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN_FLOATING;//IPU;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_10 | GPIO_Pin_9 | GPIO_Pin_8;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA , GPIO_PinSource11);
EXTI_InitStruct.EXTI_Line = EXTI_Line11; // EXTI15_10_IRQn
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
/* Triggers on rising and falling edge */
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_Init(&EXTI_InitStruct);
/* Configure one bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStruct.NVIC_IRQChannel = EXTI15_10_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0x00;
/* Set sub priority */
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0x00;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
/* PD0 is connected to EXTI_Line0, which has EXTI0_IRQn vector */
NVIC_InitStruct.NVIC_IRQChannel = EXTI9_5_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0x00;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0x00;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA , GPIO_PinSource10);
EXTI_InitStruct.EXTI_Line = EXTI_Line10;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_Init(&EXTI_InitStruct);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA , GPIO_PinSource9);
EXTI_InitStruct.EXTI_Line = EXTI_Line9;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_Init(&EXTI_InitStruct);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA , GPIO_PinSource8);
EXTI_InitStruct.EXTI_Line = EXTI_Line8;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_Init(&EXTI_InitStruct);
}
/* Handle Digital Input interrupts */
void EXTI15_10_IRQHandler(void) {
if (EXTI_GetITStatus(EXTI_Line11) != RESET) {
CounterCh[1]++;
EXTI_ClearITPendingBit(EXTI_Line11);
}
if (EXTI_GetITStatus(EXTI_Line10) != RESET) {
CounterCh[2]++;
EXTI_ClearITPendingBit(EXTI_Line10);
}
}
void EXTI9_5_IRQHandler(void) {
if (EXTI_GetITStatus(EXTI_Line9) != RESET) {
CounterCh[3]++;
EXTI_ClearITPendingBit(EXTI_Line9);
}
if (EXTI_GetITStatus(EXTI_Line8) != RESET) {
CounterCh[4]++;
EXTI_ClearITPendingBit(EXTI_Line8);
}
}
دیدگاه