Hex data over BLE UART Moderators: adafruit_support_bill, adafruit

[snailzz]

Hi everyone!
I am trying to setup a small and a very simple demo by retrofitting Bluetooth connectivity to an older RS485 device. I am working with BLE UART Friend board (Adafruit 2479). The idea is to send a command over BLE that will be then converted to RS485 on the UART side of the BLE Friend. The issue I am stuck with is that I need to send not a string of ASCII symbols but a hex-formatted command with STX/ETX, CRC, etc. I was trying to use Bluefruit Connect app to send data over BLE UART, but it seems that it can only accept string data as its input.
Is there any way to send hex data over BLE UART? I am quite new to this and probably missing something, sorry if it is a stupid question.

[austin944]

You might try Nordic's UART app instead of Adafruit's app to see if it works any better:

https://www.nordicsemi.com/Products/Dev ... rf-toolbox

[snailzz]

I tried that but no luck. It has more or less the same functionality.

[adafruit_support_mike]

Try using the .write() func tion instead of .print().