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Interrupt stack overflow K20DX CW10.5 MQX4.0

Question asked by TOM JUNKANS on Nov 28, 2014
Latest reply on Nov 30, 2014 by rickli

I'm having a CPU crash problem and I am noticing an interrupt stack overflow when I send a high rate of SPI slave interrupts to my K20.


My system is setup as an SPI slave device utilizing a kernel level SPI interrupt when the receive FIFO is not empty (~1Khz).

The system also has two external A/D's interrupting GPIO lines configured as MQX interrupt inputs (~1Khz).


No matter what I do I con not change the size of the Interrupt Stack size, always reading ~1K. Does anyone know the trick?


Thanks n advance,