EEG trigger labels from serial port to BV Recorder only go up to 191, then start again at 128

[JensBoelte]

Hello @jsargent

@jsargent

win.callOnFlip(serialPort.write, bytes(chr(Crap), 'utf8'))

So you tried?

win.callOnFlip(serialPort.write(bytes(bytearray([Crap]))))

Although your code looks a little different than I expected

Compare your code

win.callOnFlip(**serialPort.write,** bytes(chr(Crap), 'utf8'))

with my example from above

win.callOnFlip(**serialPort.write(**bytes('128','utf8')))

Copy & paste error on my side?

See here for an explanation of the behavior of the serial port triggers Strange trigger values with MMBT-S interface - #4 by jon

@jon

Thanks for digging into that Jens, I never noticed that the bytes(chr(trigger)) doesn’t work above 127 (so only a 7-bit value ), Using chr(128) does return the same value as bytearray([128]) so the issue is the unicode->str conversion rather than the chr conversion itself.

I have no idea why you can send trigger values up to 192?

Best wishes Jens