nRF52832 Switching UART driver between UART Log and GPS

[Max Liao]

Dear helper.

Currently, in my custom board had a GPS chip that connect to nRF52832 with UART port.

But also the only way that I can trace the log is the other UART port via using the NRF_LOG_INIT to initiate.

According to data sheet, nRF52832 only have 1 UART driver, so in this situation, when the GPS is in process I need to de-init the LOG module.

And when the GPS process is finish, I need to re-init the LOG module back.

Now I got the issue that device will freeze when I re-init the LOG module, and also because I didin't use the RTT log for trace, so I can't see any error code.

1. How to de-init and re-init the LOG module correctly?

2. Or is there the other option that can switch or not switch the UART driver?

Please give me an advise.

SDK version: v15

Thanks.

[Turbo J]

Did you try switching to Segger RTT logging?

[Max Liao]

Dear Turbo J

I try with rtt already, but in my device it only support the UART port that connected to USB connector. 

So in this case, I can't use rtt at last. 

Thanks.

[Einar Thorsrud]

Hi,

The Logger module is not intended to be disabled after it has been enabled, so you will need to make some adaptations in order to get it to work. Perhaps you could avoid it altogether and use the UART module instead?

Do you have to use UART to communicate with the GPS module in the first place? If it has I2C or (even better) SPI, then that would probably be a better choice.

[Max Liao]

Dear Einar.

I used the app_uart and also used printf to do the log, and also I set the RX for GPS.

So I think it might resolved the problem for temporary.

Thanks.