DTM BLE Testing

[john chia]

Hi,

I'm using the NRF52811.

In my schematic, the SWDCLK and SWDIO is connected to an external connector and the NRF52811 is connected to MCU through the SPI channel.

Can the SWD signals be used by Bluetooth tester to enter into Direct Test Mode (DTM)?

The UART signals on the NRF52811 are not exposed.

Tks and rgds,

[Jørgen Holmefjord]

Hi,

The DTM firmware that we provide in our SDK only supports UART as a transport layer for communication with the tester. Although it should be possible to modify the DTM firmware to receive similar commands over RTT/SWD interface, I doubt that you will find any testers that support this as an interface. You would then need to implement a relay-node that receives UART commands from the tester and forwards this over RTT to the DTM node, and vice versa.

Do you have any other GPIOs exposed from the nRF52811? The UART pins are configurable in all nRF5x chips and can be assigned to any GPIOs on the chip.

Best regards,
Jørgen