Hi,
I attached an MAX3232 RS232 transceiver to the RX and TX pins on a Adafruit Feather M4 CAN Express with ATSAME51 and the USB serial port has died. The board still functions otherwise. Is there an issue with the way I connected things?
Thanks
RS232 kills USB serial
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- jevada
- Posts: 194
- Joined: Fri Dec 15, 2017 5:29 am
Re: RS232 kills USB serial
Looks like you swapped RX_D0 and TX_D1, resulting in a possibly (too) high current through TX. I'm afraid you burned either that MAX3232 or your feather's output.
- pateco
- Posts: 9
- Joined: Mon Oct 11, 2021 11:19 pm
Re: RS232 kills USB serial
I see, I was pretty sure it was dead. Are the RX and TX pins shared with USB Serial? Are there other serial hardware ports exposed, i.e. Serial1, Serial2, Serial3, ...?
Please be positive and constructive with your questions and comments.