How to enter directe test mode？

RE: How to enter directe test mode？

kphalak — Thu, 27 Dec 2018 20:08:01 GMT

So how does testing process work? Do we need to replace our application firmware with DTM example firmware? Or DTM and application should co-exist?

RE: How to enter directe test mode？

FormerMember — Tue, 10 Apr 2018 07:10:52 GMT

The DTM interface is by the Bluetooth Spec, vol 6, part F, defined to either use use UART or HCI, so one of those has to be used.

I'm not familiar with RFCOM, but I don't think it will work.

For UART communication, only two pins are needed. Is there no way you can expose two pins for UART for the DTM testing?

RE: How to enter directe test mode？

Thomas Y — Fri, 06 Apr 2018 18:10:42 GMT

Hi we didn't expose UART physical pin on the NRF52 we only have JTAG to program the module. Would RFCOM driver allow to send AT command to NRF52 once DTM firmware is flashed to the chip ? if so do you have a recommended BLE USB module we can use to validate or an RFCOM app on Android or IOS. Looking at the sample physical pin are used so In this case can various APP be used to flash the NRF and put it automatically in DTM test mode without sending AT command. In this case how to set it in specific frequency receive only mode. Can you point to API to do so

RE: How to enter directe test mode？

FormerMember — Fri, 05 May 2017 06:19:19 GMT

To use DTM, you will have to program DTM firmware to the chip, it can be useful to have a look at the DTM example documentation. To test DTM, you can use the python script that comes with nAN34.