Messages in this thread | | | Date | Fri, 21 Mar 2014 09:21:41 +0100 | From | Stanislav Meduna <> | Subject | Re: mxs-auart gives data from previous run after close and reopen |
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On 21.03.2014 02:39, Peter Hurley wrote:
> Does disabling the fifo on shutdown clear the fifo?
I did not try this, but if my theory is correct, it would not help, as all this does is reducing the FIFO length to one character. So you'd still get up to two characters: one in the "FIFO" - it could get there a microsecond after you disable the FIFO before you gate the clock - and one being received into the shift register (garbled by shutting down the clock in the middle of the reception that was resumed when clock was resumed on startup). Note that one can get preempted here, so the instructions next to each other can be milliseconds apart in reality.
IMHO we need a soft-reset here.
Regards -- Stano
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