nRF52810 does not work with Radio Test, does not modulate with Direct Test

RE: nRF52810 does not work with Radio Test, does not modulate with Direct Test

Håkon Alseth — Mon, 07 Jun 2021 07:53:54 GMT

I'm glad to hear that you're happy with using the radio_test example at this point, but also sorry to hear that DTM still does not work. If you try to get DTM running in the future, I'd recommend that you try different GPIOs for RXD and TXD, just to see if there's something there.

Kind regards,

Håkon

RE: nRF52810 does not work with Radio Test, does not modulate with Direct Test

dbur — Fri, 04 Jun 2021 01:54:38 GMT

Tech support at Laird had the same result. But we are supposedly using the same FW and same eval board as them but it does not work. The issue remains unresolved, though we are good to go with Radio Test instead now.

RE: nRF52810 does not work with Radio Test, does not modulate with Direct Test

Håkon Alseth — Thu, 03 Jun 2021 11:40:55 GMT

Hi,

There is a bug in dtm for larger packets (>63 bytes), more specifically in ble_dtm.c::on_test_setup_cmd(), line 1305.

It is currently:

m_packet_length = (parameter && LE_UPPER_BITS_MASK) << LE_UPPER_BITS_POS;

It should be:

m_packet_length = (parameter & LE_UPPER_BITS_MASK) << LE_UPPER_BITS_POS;

However, with your setting (PBRS9, 20 bytes), this should work even without the above mentioned fix. I tested both on a nRF52810 just now, without issues.

Kind regards,

Håkon

RE: nRF52810 does not work with Radio Test, does not modulate with Direct Test

dbur — Wed, 02 Jun 2021 18:44:19 GMT

Thank you this helped. We had no luck getting Direct Test to enable the correct modulation required for the testing. Radio test worked fine, though we had the problems with the serial port for the BL651. We ended up needing to buy the full compiler version since the BL651 code base exceeded the size limit for the free version.

RE: nRF52810 does not work with Radio Test, does not modulate with Direct Test

Håkon Alseth — Tue, 25 May 2021 08:44:18 GMT

Hi,

The nRF52810 (and nRF52811) does not have a floating point, so it must be compiled with soft ABI.

For DTM, you should be able to use the emulated "pca10040e" (precompiled: direct_test_mode_pca10040e.hex) project for the nRF52810.

The radio_test example does not have a emulated project, so you will have to follow this algorithm to make it into a nRF52810 project:

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/nrf52810_user_guide.html?cp=7_1_5_0_2#ug_52810_software

Note that in most IDEs, the second step "In the project settings, change to device "NordicSemiconductor->nRF52810_xxaa"" will select soft floating point for you, but in gcc, you need to change the Makefile, by changing out "-mfloat-abi=hard -mfpu=fpv4-sp-d16" to "-mfloat-abi=soft"

Kind regards,

Håkon