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Why ARM7 CPU crashes when I implement USART driver on it ?

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yifen

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Question about USART

I use AT91 r40807 arm7 cpu. When I implement the interrupt-based usart driver, the system will crash occasionally. Does anyone encounter this problem before ? Could anyone offer usart driver ?
 

Re: Question about USART

Hi
Probably you're exploding buffer or stack
Attached a nice uart handler with semaphores
Best
PadsPCB
 

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