I'm a brand new PyBoard / uPython user and am currently building an electric heater controller atop electronic modules created by a friend of mine. But this is the side-story... My goal for the moment is to clone the REPL to the lcd160cr I've connected in 'Y' position [1] on my PyBoard1.1 (firmware 1.9.2, "threading").
Everything works fine (tests, write, set_power, erase, ...) but when I try "Directing the MicroPython output to the display" [2], nothing happens and it saddens me as I would like my "monitoring application" to be standalone (and not require a PC-based 'display').
I precisely executed the given commands, no errors are thrown, nothing happens...
MicroPython v1.9.2 on 2017-08-23; PYBv1.1 with STM32F405RG
Type "help()" for more information.
>>> uart = pyb.UART('YA', 115200)
>>> pyb.repl_uart(uart)
>>> print('On the LCD')
On the LCD
>>> # Nothing on the LCD...

I've also tried the same commands after: reseting the LCD; erasing it; singing voodoo incantations whilst walking on my hands... but alas, still a plain black (backlit) LCD

Does anyone has any clue on what I might do wrong?
Thank you for your kind help

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[1] http://micropython.org/resources/LCD160 ... itions.jpg
[2] https://docs.micropython.org/en/latest/ ... he-display