Re: [Paparazzi-devel] external interrupt with the chibios?

[Chris]

I found that this code at least compiles ok, the pin is wrong, it is 
used only for testing the code.

  palSetPadMode(GPIOA, 0,PAL_MODE_INPUT_PULLUP | PAL_STM32_OSPEED_HIGHEST);
  /* Enabling events on both edges of PA0 signal.*/
  //palEnablePadEvent(GPIOA, 0U, PAL_EVENT_MODE_BOTH_EDGES);
  palEnablePadEvent(GPIOA, 0U, PAL_EVENT_MODE_FALLING_EDGE);
  palSetPadCallback(GPIOA, 0U, chibios_ext_isr_cb, NULL);

And the call back function

static void chibios_ext_isr_cb(void *arg)
{
    (void)arg;
    if (RF_Mode == TRANSMIT) {
      RF_Mode = TRANSMITTED;
      isr_packet_tranmitted = true;
    } else if (RF_Mode == RECEIVE) {
      RF_Mode = RECEIVED;
      isr_packet_received = true;
      lastReceived = millis();
    }

return;
}

Is this approach acceptable ?

Chris


On 27/5/21 2:14 π.μ., Chris wrote:
> Hi.
>
> Is there any example of how to setup an external interrupt iwith chibios?
>
> with libopencm3 i use
>
>   rcc_periph_clock_enable(RCC_SYSCFG);
>   rcc_periph_clock_enable(RCC_GPIOB);
>   rcc_periph_clock_enable(RCC_GPIOB);
>
>   gpio_mode_setup(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO5);
>   //gpio_mode_setup(GPIOC, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO6);
>
>   nvic_enable_irq(NVIC_EXTI9_5_IRQ);
>   exti_select_source(EXTI5, GPIOB);
>   //exti_select_source(EXTI6, GPIOC);
>   exti_set_trigger(EXTI5, EXTI_TRIGGER_FALLING);
>   //exti_set_trigger(EXTI6, EXTI_TRIGGER_RISING);
>   exti_enable_request(EXTI5);
>   //exti_enable_request(EXTI6);
>   nvic_set_priority(NVIC_EXTI9_5_IRQ, 0x0F);
>
> But with chibios i do';t know how to do it (but i am trying!)
>
> Chris