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SAM4 USART interrupt code example

Posted by dvukovic on April 22, 2013
Is there a sample code for using USARTx with interrupts in FreeRTOS ?

Thank you

RE: SAM4 USART interrupt code example

Posted by Richard on April 22, 2013
Yes - there are numerous examples in the Atmel ASF (Atmel Software Framework). Look of "FreeRTOS Peripheral Control" examples in the ASF download (http://asf.atmel.com). See http://www.atmel.com/images/doc42049.pdf


RE: SAM4 USART interrupt code example

Posted by Donald Vukovic on April 22, 2013
I am sorry, but I have looked at that for a week now and nothing I do works.

My code is stuck repeating the same USART1_handler() over and over again.

I tried to follow the SYS_TICK interrupt as a model, but that did not work.

I would guess that I am not actually clearing the USART1 interrupt, but I just do not see why I can not do it.

As soon as I enable that interrupt, it starts and does not end.

If pasting the code here would help, I will. ( I know its frowned upon)

Thank you (again)

RE: SAM4 USART interrupt code example

Posted by MEdwards on April 23, 2013
I don't think the example uses USART1_handler() because it uses the DMA interrupts instead. I could be wrong though.

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