How to send Carriage Return over nRF Toolbox UART Buttons?

[Cavemanatwork]

Hi together!

Ist it possible to send a CR (Carriage Return) over the programmable UART Buttons? When yes, what is the Syntax for?

For example, i need to send such a string: 58796541[CR]

Thank you very much and best Regards Michael from Germany

[MartinBL]

Hi,

Unfortunately there is no easy way to do this. At least it wasn't on my Android phone. There is no [CR] button on the keyboard, but I was told that I could try to make a .bin file with the characters I needed e.g. linefeed and carriage return. So I downloaded a Hex Editor and a File editor app and manually created a hex file with the values 0x0A (new line) and 0x0D (carriage return). Then I opened the file in a text editor and copy pasted the string into the Nordic UART app. The strange thing is that it seemed to work with new line, but not carriage return. I don't know why. It might be something on the terminal side (I used Tera Term), or maybe an Android vs Windows semantics issue. It is worth investigating some more.

A different workaround is to add app_uart_put('\r') in the function printing the string to UART on the application side. Then you would get a CR on every transfer though. You might also try to implement your own mechanism. You can e.g. use app_uart_put('\r') whenever you receive a string containing "\CR" or something like that.

[Aleksander Nowakowski]

Since 1.16.4 this is no longer required. You may select the EOL type when you configure the button. Remember to add a new line to your command at the end of the line.