Posted on March 25, 2015 at 18:18Hi,
i'm pretty new to Interrupt handling so maybe i forgot something. This is my code for Setting up PA0 & PA1 Input Pins. The pin state works fine:
bool GetRegisterDdkSpurA() { return GPIOA->IDR & GPIO_IDR_IDR_0; }
bool GetRegisterDdkSpurB() { return GPIOA->IDR & GPIO_IDR_IDR_1; }
but i get no call of the Interrupt Routine - i set up like this:
__GPIOA_CLK_ENABLE();
// GPIO A, Pin 0 Init
static GPIO_InitTypeDef aGpioInitPin0;
aGpioInitPin0.Mode = GPIO_MODE_INPUT;
aGpioInitPin0.Pull = GPIO_PULLDOWN;
aGpioInitPin0.Speed = GPIO_SPEED_LOW;
aGpioInitPin0.Alternate = 0;
aGpioInitPin0.Pin = GPIO_PIN_0;
HAL_GPIO_Init(GPIOA, &aGpioInitPin0);
// GPIO A, Pin 1 Init
static GPIO_InitTypeDef aGpioInitPin1;
aGpioInitPin1.Mode = GPIO_MODE_INPUT;
aGpioInitPin1.Pull = GPIO_PULLDOWN;
aGpioInitPin1.Speed = GPIO_SPEED_LOW;
aGpioInitPin1.Alternate = 0;
aGpioInitPin1.Pin = GPIO_PIN_1;
HAL_GPIO_Init(GPIOA, &aGpioInitPin1);
// Interrupt for PA0
SYSCFG->EXTICR[0] = (SYSCFG->EXTICR[0] & SYSCFG_EXTICR1_EXTI0) | SYSCFG_EXTICR1_EXTI0_PA; // Port A, Pin 0 auf _EXTI0-interrupt mappen.
EXTI->RTSR |= (1 << EXTI0_IRQn); // Enable Rising Trigger for Interrupt ExtI0
EXTI->FTSR |= (1 << EXTI0_IRQn); // Enable Fallig Trigger for Interrupt ExtI0
HAL_NVIC_SetPriority(EXTI0_IRQn, 0x0F, 0x00); // lowest priority.
HAL_NVIC_EnableIRQ(EXTI0_IRQn); // enable interrupt.
// Interrupt for PA1
SYSCFG->EXTICR[1] = (SYSCFG->EXTICR[1] & SYSCFG_EXTICR1_EXTI1) | SYSCFG_EXTICR1_EXTI1_PA; // Port A, Pin 1 auf _EXTI1-interrupt mappen.
EXTI->RTSR |= (1 << EXTI1_IRQn); // Enable Rising Trigger for Interrupt ExtI1
EXTI->FTSR |= (1 << EXTI1_IRQn); // Enable Fallig Trigger for Interrupt ExtI1
HAL_NVIC_SetPriority(EXTI1_IRQn, 0x0F, 0x00); // lowest priority.
HAL_NVIC_EnableIRQ(EXTI1_IRQn); // enable interrupt.
extern ''C'' void EXTI0_IRQHandler(void)
{
// ...
}
extern ''C'' void EXTI1_IRQHandler(void)
{
// ...
}
