GPIO Interrupt Handler

kesanli_cinci — Mon, 05 Feb 2024 11:50:28 GMT

Hello,

I configured a GPIO as an interrupt and wrote a callback function for this GPIO.

At the end of the callback function, interrupt flag is cleared. Inside this callback function, a task is notified. Before jumping to the task, interrupt flag is cleared at the the end of the callback function.

However, I use this GPIO's status (HIGH, LOW) in order to read some registers in the task. Because I clear interrupt, I am not able to read this pin as HIGH. Operating system is FreeRTOS. That's why, I can not put this read operation inside Callback function because I use SPI_send function in this read operation.

How can I make read operation without clearing the interrupt flag?

Re: GPIO Interrupt Handler

PetrS — Tue, 06 Feb 2024 09:48:43 GMT

Hi,

could you please describe your intention in more details, maybe share piece of code you have?

Also what S32K1 device and RTD version is used in fact?

You should be able to read pin status/level at any time using Gpio_Dio_Ip_ReadPin function.

BR, Petr

S32KのトピックRe: GPIO Interrupt Handler

GPIO Interrupt Handler

Re: GPIO Interrupt Handler