Signal manager

[groups at chichak.ca]

> On 2016-May-16, at 11:10, Ярослав Лещинский <midniwalker at gmail.com> wrote:
> 
> Hello. I'm try to use rtems with my stm board(stm32f4xx). And for now i have one problem: it's about ISR. The thing is, i have my own drivers, which uses isr(exti driver, uart and etc). I read rtems c-user manual properly,  but still can't understand clearly, how i can bring control to rtems signal manager via ASR. I'll be appreciated, if someone can give some advise.
> 
> Yaroslavl.

In my code I use interrupts for DMA with ADCs, and CAN using the HAL interrupt handler callback structure. 

In this case, DMA2_Stream2_IRQHandler calls HAL_DMA_IRQHandler in stm32f4xx_hal_dma.c which figures what caused the interrupt and calls the appropriate callback.

In my ADC code I use this:

	rtems_status_code status;
	const char ADC1handlerName[] = "AD1r";
	status = rtems_interrupt_handler_install((rtems_vector_number) DMA2_Stream2_IRQn,
			ADC2handlerName, RTEMS_INTERRUPT_UNIQUE,
			(rtems_interrupt_handler) DMA2_Stream2_IRQHandler, NULL);
	if (status != RTEMS_SUCCESSFUL) {
		printk("interrupt handler install 2 failed with %d\n", status);
	}


Later, I have the interrupt callbacks:

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc) {

	rtems_status_code status;
	status = rtems_event_send(ADCTaskId, RTEMS_EVENT_0);
	if (status != RTEMS_SUCCESSFUL) {
		printk("complete callback failed with %d", status);
	}
}

void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef* hadc) {

	rtems_status_code status;
	status = rtems_event_send(ADCTaskId, RTEMS_EVENT_1);
	if (status != RTEMS_SUCCESSFUL) {
		printk("half complete callback failed with %d", status);
	}
}


In my CAN code I use:

	rtems_status_code status;

	status = rtems_interrupt_handler_install(CAN1_RX0_IRQn, "CANR", RTEMS_INTERRUPT_UNIQUE,
			(rtems_interrupt_handler) CAN1_RX0_IRQHandler, NULL);
	if (status != RTEMS_SUCCESSFUL) {
		printk("Pressure task interrupt install bombed with %d\n", status);
	}

and use the two call back functions HAL_CAN_RxCpltCallback and HAL_CAN_ErrorCallback in the same way as the ADC callbacks.

The symbol for external interrupt looks like EXTI0_IRQn and the UART would be like USART2_IRQn.


Andrei from The Great White North.




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