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After controling by uart, the program is unsteady.

Question asked by alan on Dec 9, 2009
Latest reply on Jan 27, 2010 by alan

Hi everyone,

    It troubles me a long time that After controling DSP by uart, the program is unsteady.The code example I am using is EZKit_21369_RS232_Basic,The audio data is transferred through DMA(SP0 using).And the interrupt priority of uart is greater than SP0.Before controling DSP by uart, everything is normal.

But once send the commands quickly(for example the interval is 1 ms),some strange problems is appeared(for example the 7th and 8th output channel are exchanged automatic).How come it?

    Hope helps very much!

    Thanks a lot!