How to send Hex byte array using UART?

RE: How to send Hex byte array using UART?

JONATHAN LL — Wed, 22 May 2024 11:16:29 GMT

Hi Tina.

Hex byte arrays, you’ll need to convert them to normal byte arrays (and vice versa), so string format.

Regards,
Jonathan

RE: How to send Hex byte array using UART?

yithwe — Thu, 16 May 2024 07:56:23 GMT

Hi JONATHAN

I need to send hex array byte(not for string), example is only provide for string send, I mean isn't the tx transmit API for hex array byte?

Best Regards

Tina

RE: How to send Hex byte array using UART?

JONATHAN LL — Thu, 16 May 2024 06:27:14 GMT

Maybe have a look at the solution to convert array to string here. https://stackoverflow.com/questions/6357031/how-do-you-convert-a-byte-array-to-a-hexadecimal-string-in-c

RE: How to send Hex byte array using UART?

yithwe — Thu, 16 May 2024 00:53:40 GMT

Thanks for your reply, for your information, I already use this sample code(academy example) to change tx buffer for send hex byte array, it's can't work.

As below tx transmit code, it's use for string to transmit, it's can't work for hex byte array.

static uint8_t tx_buf[] =   {"nRF Connect SDK Fundamentals Course\n\r"
                             "Press 1-3 on your keyboard to toggle LEDS 1-3 on your development kit\n\r"};

ret = uart_tx(uart, tx_buf, sizeof(tx_buf), SYS_FOREVER_MS);
	if (ret) {
		return 1;
	}

Best Regards

Tina

RE: How to send Hex byte array using UART?

JONATHAN LL — Wed, 15 May 2024 13:42:17 GMT

Hi,
You can find the solutions here: https://github.com/NordicDeveloperAcademy/ncs-fund/tree/main/v1.6.0-v1.9.1/lesson5/fund_less5_exer1_solution

Regards,
Jonathan