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Is RTSM A9 uart interrupt ok?

liang hua
Note: This was originally posted on 15th August 2011 at http://forums.arm.com

I run sample code 'SW012-SW-00000-r1p0-00rel0.zip' on RTSM CortexMPCore, uart interrupt does not generate after inputs a command.
The sample code has a uart console. Uart input is processed in interrupt. First command input is ok, but after that, input is hung up.
If not using uart interrput, input and output is ok.
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