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

[Gautier Hattenberger]

Hi,

Yes, I think it is the correct way to trigger a callback on a GPIO event.

Gautier


Le 27/05/2021 à 10:01, Chris a écrit :
> 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
>>
>>
>
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