Hello all:

I have interfaced a CC1101 radio and a serial GPS module to a MSP430F2611 
microcontroller (custom design). The radio is connected to Port B0 (SPI with 
ENABLE_SPI0_DMA set) and the GPS to Port A0 (UART, 4800 baud). Everything works 
fine until I increase the number of nodes in a multi-hop network. Then, nodes 
will start to lock up, usually after a topology change. I believe the lockup is 
caused due to the way interrupts from the radio and GPS are being handled 
(after a topology change, network traffic increases causing an increasing 
number of radio interrupts; the problem also disappears if I disable UART 
interrupts).



Unfortunately, this issue is beyond my understanding of TinyOS. Can anyone shed 
some light on what might be happening?

Thanks for any help,

Anand
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