How to manipulate a datastream between UART and uos.dupterm
Posted: Sun Mar 22, 2020 2:08 pm
A big Hello and thanks to all of the forum members and admin for doing such a great work!
I have a big dot matrix lcd monitor, i can only send ascii characters via serial to it.
Therefore i need to change the datastream of the REPL to display it right.
I use a NUCLEOF401RE board.
The piece of code is my approach, and its not working, the error i got is:
"ampy.pyboard.PyboardError: ('exception', '', 'Traceback (most recent call last):\r\n File "<stdin>", line 43, in <module>\r\nOSError: stream operation not supported\r\n')"
I read the docs about dupterm, and thought this could work: https://docs.micropython.org/en/latest/ ... os.dupterm
Is it the wrong STREAM class or what am i doing wrong ?
thanks in advance, drs
I have a big dot matrix lcd monitor, i can only send ascii characters via serial to it.
Therefore i need to change the datastream of the REPL to display it right.
I use a NUCLEOF401RE board.
The piece of code is my approach, and its not working, the error i got is:
"ampy.pyboard.PyboardError: ('exception', '', 'Traceback (most recent call last):\r\n File "<stdin>", line 43, in <module>\r\nOSError: stream operation not supported\r\n')"
I read the docs about dupterm, and thought this could work: https://docs.micropython.org/en/latest/ ... os.dupterm
Is it the wrong STREAM class or what am i doing wrong ?
thanks in advance, drs
Code: Select all
from pyb import UART
from time import sleep
import time, uos, uio
uart = UART(6, 19200)
class QC(uio.IOBase):
def write(self, buf):
print('write', repr(buf))
return len(buf)
def ioctl(self):
return None
def read(self, nbytes):
if uart.any():
return uard.read(nbytes)
else:
return('None')
def readinto(self, buf):
if uart.any():
for i in length(buf):
if uart.any():
buf[i] = uard.read()
else:
return buf
else:
return(None)
print('readint', repr(buf))
uos.dupterm(QC)
