DMA Trigger via input GPIO Pin

Hi, is it possible to start a DMA transaction by a falling edge on a GPIO pin? I used the EXTI configuration for this input pin and in the EXTI-ISR i can trigger the DMA. But i think this is...
DMA Trigger via input GPIO Pin

Hi, is it possible to start a DMA transaction by a falling edge on a GPIO pin? I used the EXTI configuration for this input pin and in the EXTI-ISR i can trigger the DMA. But i think this is...
Unable to trigger SWI via GIC on Cortex A15
Unable to trigger SWI via GIC on Cortex A15
Level triggered vs edge triggered

I am triyng to make an interrupt routine to control the entrance and exit of a client from a taxi car.The problem is that I dont know exacly what I should choose: Level triggered or edge triggered. ...