Not receiving whole hex array – serial communication

[Stig24]

There is probably an obvious reason for why I’m not receiving the whole hex array I sent?

Thanks

[Vidar Berg]

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

[Stig24]

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.

[Vidar Berg]

Stig24 said:

However changing the pins to usb(rx/tx pins) and baud rate to 115200

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?

[Stig24]

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

[Stig24]

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

[Vidar Berg]

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.