PIC32MX Interrupt crashes system

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Hi Robert,

portYIELD_FROM_ISR is defined in portmacro.h which resides under FreeRTOS\Source\include\portable\MPLAB\PIC32MX

The same folder contains ISR_Support.h which is included in the assembler files.

I tend to keep the ISR wrappers in separate assembler files along with the “peripheral” C code.
Putting all the interrupt wrappers in a single file also works, just makes it slightly less transferable between projects.

My version of a change notification ISR:

void __attribute__( (interrupt(IPL0AUTO), vector(_CHANGE_NOTICE_VECTOR))) vChangeNotificationInterruptWrapper( void );
void vChangeNotificationInterruptHandler( void )
{
    BaseType_t bTaskWasWoken = pdFALSE;
    IFS1CLR = _IFS1_CNIF_MASK; // Clear the interrupt
    // post a message to a queue with bTaskWasWoken changed by the call
    portYIELD_FROM_ISR(bTaskWasWoken);
}

Note that the interrupt priority (IPL0AUTO) is irrelevant here, the priorities are set in the IPCx registers.

Jean