nRF52840 software UART didn't go well

RE: nRF52840 software UART didn't go well

FelixSung — Wed, 02 Nov 2022 06:20:41 GMT

I just copy and paste the code from here

nRF52 Software Serial library similar to Arduino software serial

and I expected to see ascii char from a to z

RE: nRF52840 software UART didn't go well

hmolesworth — Tue, 01 Nov 2022 16:11:49 GMT

You also use a spare PWM for an accurate high-speed uart, have a look at this pwm-sequence post for working code I wrote

RE: nRF52840 software UART didn't go well

Susheel Nuguru — Tue, 01 Nov 2022 15:35:25 GMT

What data are you expecting on the terminal? Are you expecting to receive ascii characters or HEX data? If you receive hex data, then the valid output will still look like garbage on the serial emulator which converts your hex data to ascii.

RE: nRF52840 software UART didn't go well

FelixSung — Tue, 01 Nov 2022 12:08:32 GMT

I set both of the baud rate to 9600, but the problem still occurred.

RE: nRF52840 software UART didn't go well

Susheel Nuguru — Tue, 01 Nov 2022 10:05:42 GMT

It looks like the baud rate the peripheral is transmitting is not matching the baudrate your terminal is listening. I have seen this garbage output more than I should and everytime it turns out to be the baudrate issue. Check your baudrate set in UART peripheral and also check the baudrate with which your sertial terminal is listening to the uart communication.