MicroPython Forum (Archive)

Here's a one liner for my previous post in case anyone wants to retrieve UART settings in the future:
You can change the ':4' to ':7' if you want to also get the buffer/timeout settings.

Update: This is what I suspect is going on. You're using uart0 for the REPL, and uart1 to read your sensor. I don't know the pinout for the Wemos, or the default setup, so you'll have to verify. You probably don't need to detach the REPL and reattach, try commenting out those lines and just reading ...

write() is functioning like print(). When the uart is detached from dupterm, at least in my case, print() doesn't display anything, you need to use write() to see your output. I'm using an ESP01 (8266) which just has the 1 set of uart pins, read() gets the input from your sensor or whatever, and wri...

I realize its not gibberish, but since it wasn't what I was I wanted... Anyway, I figured it out. I think near the beginning of my attempts I tried this but still got the same error, now I know why. uart.write('SEQ/Len(): '+str(sequence).encode('ascii')+'\r\n') The error I got was something like can...

Currently I'm using print(), but I want to do uos.dupterm(None, 1) and still see the output I was getting from print() for debugging. When I use print() the output I see is b'\xff\xfd\x18' (actually this is just sample output from a variable), this is what I'd like to see when I do uart.write(). pri...

If I print this byte string I get the output I want, but if I try to send it with uart.write() I get gibberish. >>> print(b'\xff\xfd\x18') b'\xff\xfd\x18' >>> uart.write(b'\xff\xfd\x18') ÿý3 I've tried various things from googling, but some of the functions aren't available in Micropython, and other...

I've had some difficulty reading from the uart myself lately on an ESP8266. I think this should work for the Wemos. I'm a beginner with Micropython, so I hope I don't lead your astray. EDIT: when you do uos.dupterm(None, 1) you won't see any output from print() or REPL until you change it back again...

Thanks, you're right. I needed to add the dict name:

conf.value
Thanks for taking a look and spotting that!

I'm trying to read/write a dict{} containing settings. I've read the docs, but I'm getting ValueError: syntax error in JSON when I try to read the settings. I'm not sure how to confirm they were written correctly. What am I missing? (sorry don't know why formatting is off, using CODE tags). There's ...

I still don't know if there's a more 'pythonic' way to do this, but in case anyone else wants to do it, this is what I whipped up for now. import ure from machine import UART def uart_cfg(device): cfg = ure.search('.*\((.*)\)', str(UART(device))).group(1).split(',') return cfg[1].split('=')[1], cfg[...