Direct Test Mode for nRF51822

RE: Direct Test Mode for nRF51822

gfgf2400 — Thu, 27 Aug 2020 20:32:40 GMT

I found the issue. In radio_test, the IAR project compiler->Output->Generate debug information is not enable. Thanks,

Dennis

RE: Direct Test Mode for nRF51822

gfgf2400 — Thu, 27 Aug 2020 18:54:08 GMT

Hi Jay,

I downloaded SDK version 12.3 and reviewed the attachments as suggested. I am doing FCC testing therefore I am looking at examples\peripheral\radio_test. However, I am having a start up issue with radio_test. On the other hand, I was able to flash, start and break at main() with examples\dtm\dtm_serialization ok.

I set the same MCU to nRF51822-CEAA to both example projects. Both IAR projects have Debugger->Run into main checked. However, I can't get radio_test break into main(). I uploaded my screen shots for both projects.

Please let me know what I should check.

Thanks,

Dennis

RE: Direct Test Mode for nRF51822

gfgf2400 — Fri, 21 Aug 2020 18:43:26 GMT

Thanks, Jay. I actually use BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 6, Part F today. I scanned through yours provided information and they are very informative. I will check it out thoroughly.

Thank you so much for the helps,

Dennis

RE: Direct Test Mode for nRF51822

Jay Tyzzer — Thu, 20 Aug 2020 23:41:01 GMT

HI Dennis,

I suggest that you use the SDK version 12.3 for DTM testing if not for anything else. As the DTM only exercises the RADIO the softdevice is not required. No buttons or LEDs are used in the direct_test_mode which is the one you can use.

You can use UART interface to do the DTM testing. Two wires needed and no flow control. TX and RX are mapped out to the GPIOs that the nRF51-DK uses and are used in the examples.

If you need to change the GPIOs that is easily done by changing the GPIOs used in the PCA10028.h file in the project and recompiling.

I have attached a app note nAN34 which is for DTM testing. I also attached a brief, unofficial document written back in the day. It is still valid even if some of the links are not.

Please note, if this is a new BLE design, you may have difficulty certifying it. This is because BT specification 4.0 has been depreciated. I suggest you look into that further, perhaps with your test house or the BT Sig directly.

if you are going to do FCC and other agency testing then I suggest you use the Radio_test example found in SDK 12.3 for that also. It does not use the softdevice either.

Good luck with your testing!!

Best regards,

Jay Tyzzer | Sr. Field Application Engineer, Hardware

M +1 626 710 7494 | Southern California, USA

nordicsemi.com | devzone.nordicsemi.com

Skype -> RFforU2

devzone.nordicsemi.com/.../nAN34_5F00_v1.01.zip devzone.nordicsemi.com/.../Configuring-and-using-the-DTM-example-from-the-Nordic-SDK_2D00_01.1.pdf