Flashed ncs v1.3.0-rc1 on 5340 network core and now UART is not sending data

[sagar448]

Hi,

We flashed an ncs v1.3.0-rc1 build onto a 5340 DK network core, and ever since then the UART is not sending any data to our PC.

We have connected RxD and TxD to pins P0.25 and P0.26 of the virtual COM port respectively. On the previous build (ncs v1.2.99-dev1) the network core would send serial data fine.

We rolled back the SDK to the previous version (v1.2.99-dev1) and flashed the hello_world sample on the network core, but no joy. We also ran nrfjprog --recover on both cores to reset all memory and flashed again, but no joy. The application core is fine (it can send serial data with a v1.3.0-rc1 build to our PC). We suspect the interface MCU to be the issue, but we cannot confirm.

Thanks.

[haakonsh]

I've replicated this issue on my end and notified our devs, I'll let you know ASAP when I've got any information.