Not receiving whole hex array – serial communication

RE: Not receiving whole hex array – serial communication

Vidar Berg — Thu, 20 Oct 2022 11:22:35 GMT

Do you see the same problem with other projects such as UART Example too?

[quote user="jorgenrs"]Tried with differnt wires[/quote]

What are these wires used for?

RE: Not receiving whole hex array – serial communication

Stig24 — Wed, 19 Oct 2022 11:32:01 GMT

Seems like the problem with receiving only zeroes still occurs. Reboot, reflash etc. nothing this time. Even tried swapping pc, then it worked for a time or two before zeros. Tried with differnt wires, nRF52840DK board, and different arduino.

RE: Not receiving whole hex array – serial communication

Vidar Berg — Wed, 19 Oct 2022 09:19:04 GMT

Thanks for the update. The Segger VCOM does not support the baudrate=921600 setting as noted here: Virtual COM port. It supports 1M though if your are looking to maximize the speed.

RE: Not receiving whole hex array – serial communication

Stig24 — Wed, 19 Oct 2022 09:16:26 GMT

Did a reboot of computer and reflashed nRF52. Everthing works fine now 🙂

RE: Not receiving whole hex array – serial communication

Stig24 — Wed, 19 Oct 2022 09:11:29 GMT

ah, sorry, i'm using the jlink yes with the RX_PIN_NUMBER and TX_PIN_NUMBER. That works fine.

RE: Not receiving whole hex array – serial communication

Vidar Berg — Wed, 19 Oct 2022 09:08:37 GMT

[quote user="jorgenrs"]However changing the pins to usb(rx/tx pins) and baud rate to 115200[/quote]

I would not expect you to receive data any data at all if the TX and RX pins were swapped. What do you use for the USB - UART bridging, is it the Jlink on our development kit?

RE: Not receiving whole hex array – serial communication

Stig24 — Wed, 19 Oct 2022 08:29:48 GMT

Thanks!

Also, I’m just trying to send some simple messages, and this exact code worked yesterday, but today I only receive zeros in my Arduino program (also same as yesterday).

Tried with a USB to TTL, and RealTerm, still zeros. However changing the pins to usb(rx/tx pins) and baud rate to 115200, it works fine.

RE: Not receiving whole hex array – serial communication

Vidar Berg — Tue, 18 Oct 2022 09:46:45 GMT

Hello,

Please try sizeof(tx_message) instead of strlen(tx_message). strlen() will stop counting when as soon as it reaches the first null character (0x00) in your array.

Best regards,

Vidar