where is the source code to enter dtm?

RE: where is the source code to enter dtm?

Susheel Nuguru — Fri, 17 Jan 2025 06:10:04 GMT

The dtm_init only prepares the hardware in a listening mode and the dtm_tr_get waits for the command from the tester (which you already know) then the received DTM command is processed in dtm_tr_process and then the command is sent to the BLE controller using the underlying transport (HCI or serial based on selected configs) in the function hci_cmd().

If you go for example in dtm_hci.c file and look into hci_cmd->hci_reset->dtm_setup_reset-> radio_init

In the above sequence you can see that you application responding to the radio reset command and requesting this to the hci and in radio_init, the radio registers are actually reset to default.

RE: where is the source code to enter dtm?

panpgg — Fri, 17 Jan 2025 01:30:15 GMT

Hi ,

Thank you for your replay. I know device does not enter DTM by itself, that's why I want to know the answer.

From your reply what's the specfic commands to let device enter dtm? It should not defined by Bluetooth^® Core Specification (Vol. 6, Part F).

And the detail of commands do?(like writing regsters or others)

plz tell me whre is the source code and I can trace it.

Thank you.

RE: where is the source code to enter dtm?

Susheel Nuguru — Thu, 16 Jan 2025 09:19:21 GMT

he device does not enter DTM by itself; instead, it initializes the DTM functionality and waits for external input. it is triggered by sending specific commands over UART to the device.