simple uart example, no output on the nRFgo display

[Eliot Stock]

I have the simple UART example working with the nRFgo motherboard laid out as described in the SDK docs, with 2p connectors on the RS-232 P15 and the SDA and SCL pins of the nRFgo display. I can flash the device and connect to it in a terminal session from a PC. All I see in the terminal session is the characters I'm typing but when I type q and ENTER I get the quit string from the device, so I presume the code is working.

I'd like to be able to see the UART conversation on the nRFgo display though. Should that be working for the simple UART example code? If not, how do I go about adding it?

[Håkon Alseth]

Hi Eliot,

The nRFgo Display runs on I2C. What you will have to do then is to create a bridge from the UART to the I2C.

You can buffer up the UART bytes until it hits "max-display-lines", or "ENTER". Then send that buffer via the nrf6350 library (nrf6350_lcd_write_string).

Best regards Håkon

[Eliot Stock]

OK, thanks. Here's another approach to the same problem then: how do I see my UART conversation in the UART window in Keil? The Keil docs are very thin on the subject and seem to suggest it's only for their simulator. Is that the case?

[Håkon Alseth]

You need ITM support in the core for this, which we do not have. Using the simulator, I believe that this is possible, although I have not tried this.

-H