[RTOS Support] AVR128n 256n Port

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AVR128n 256n Port

Posted by DaveH on March 28, 2007

FYI - I just ported FreeRTOS to the ATMega2561. I had previously ported it to the ATMega128 and figured this port would be simple. What I didn't realize is that these newer processors push 3 bytes onto the stack for a Call subroutine. That means that pxPortInitialiseStack() in port.c has to be modified to put an extra byte on the stack for each task. This took a bit of debugging since I hadn't read the entire 449 page manual.

Dave

RE: AVR128n 256n Port

Posted by Nobody/Anonymous on April 12, 2007

Have you already modified the code? I´m having problems with my ATMEGA162, vTaskDelay and vTaskDelayUntil don´t work, the processor hangs itself. I think I have the same problem.