Enter DTM mode from Application without a reset

[Sid]

I have incorporated the DTM example into my application. It works as expected when I set the  NRF_POWER->GPREGRET and then perform a reset sd_nvic_SystemReset() , then enter DTM mode dtm_exec() as suggested in example.

I am trying to enter DTM mode from the application itself without performing a reset. 

I disable the softdevice by using the function  sd_softdevice_disable() and then call the function dtm_exec() but the UART doesn't seem to be working, any idea if the following method is even possible

[Håkon Alseth]

Hi,

 

Could you enter debug mode, and look at the UART registers when you have entered DTM to see if there's any problems there?

Does the firmware run the actual code, or does it fault/assert before entering the dtm loop?

 

Kind regards,

Håkon

[Sid]

Hey , 

So I don't think that it faults , as  dtm_init() function returns  DTM_SUCCESS and it is the while loop to accept the UART commands , I verified that. Its' just the UART interface isn't working.

So in the normal application mode the UART0 is used and I deInit it (NRF_UART0->TASKS_STOPRX = 1) before entering DTM mode so I could re initialize it again. 

[Håkon Alseth]

Have you checked the UARTE peripheral in debug mode, to ensure that your new UART configuration is loaded into the registers?

DTM uses app_uart library by default. Are you also using this library in your application? If yes, try de-init'ing the library first, using app_uart_close();, then start up the dtm.

 

Kind regards,

Håkon

[Sid]

Hey , 

it was an issue with the DTM UART config , I had to modify the driver to plug in my uart configuration.