Serial Driver Timeout has no effect

[wurstnase]

Hi,

I'm working with the serial driver on a STM32F103.
I want to use sdGetTimeout(&SD1, OSAL_MS2I(200)) but the timeout didn't work/has no effect.
osalThreadSleep-functions work as expected.

[wurstnase]

Sorry. Add a debug. For some reason the sdGet gets random data. Pretty strange, because I can't see anything on my serial sniffer.
Probably I'm missing something different.

[Giovanni]

To test the timeout call the function with no data in input, it must exit after the specified timeout.

Giovanni

[wurstnase]

The serial driver is buffered?
Guess I need to flush the buffer before starting in my case.

[Giovanni]

Correct or it would immediately return buffered data.

Giovanni

[wurstnase]

Is there a simple way to flush?
Currently I simply have a while loop until timeout. Probably there is a better way?

[Giovanni]

Make a read with TIME_IMMEDIATE.

Giovanni

[wurstnase]

Perfect. Thanks.

[wurstnase]

Probably it is a good idea to add a flush in the queue directly?

Something like:

Code: Select all

#define iqFlushI(iqp) \
do { \
  (iqp)->q_wrptr = (iqp)->q_rdptr; \
  (iqp)->q_counter = 0; \
} while(0)

[Giovanni]

That would be iqResetI().

Giovanni