Hey All,
I am using Microchip's Python program to download
code to a PIC32 microprocessor via Pyserial. There
is also Microchip's bootloader code running on the
PIC side. This works very well using the a
standard serial hardware directly connected to a
USB to serial adapter to one of the PIC's UARTs.
However in our application the hardware is a
single wire thus requiring a half-duplex
communications. Fortunately Microchip's protocol
lends itself to half-duplex communications,
however the problem is that both the PIC and the
Python program will receive an echo when one of
the other transmits due to the hardware design. It
other words the PIC will receive what it transmits
and the same on the Python side. The PIC side is
easily fixed by simply turning off receive during
transmit. I don't think I can do this on the
Python side at least there nothing in Pyserial's
documentation that you can do that.
I have tried to do some flushing of the receive
buffer, but I haven't been too successful. Perhaps
that is due to timing.
I thought I would reach out to see if anyone may
have had a similar experience.
Thanks for any help.
Mark
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