nRF5340-PDK power configuration to get +3dBm Tx Power

RE: nRF5340-PDK power configuration to get +3dBm Tx Power

Jørgen Holmefjord — Fri, 28 Feb 2020 10:23:47 GMT

Can you test with the hex-files I built?

devzone.nordicsemi.com/.../radio_5F00_test_5F00_radio_5F00_high_5F00_voltage_5F00_nrf5340_5F00_dk_5F00_nrf5340_5F00_cpunet.hex

devzone.nordicsemi.com/.../radio_5F00_test_5F00_nrf5340_5F00_dk_5F00_nrf5340_5F00_cpunet.hex

I used the "start_tx_carrier" command to start transmitting.

RE: nRF5340-PDK power configuration to get +3dBm Tx Power

Chris Pezzee — Thu, 27 Feb 2020 18:42:34 GMT

As near as I can tell, yes:

✔ ~/nrf5340/ncs/nrf [master ↓·12|✚ 2…4]

10:41 $ git log -1

commit bd95c844ba6b55f45b089dbcad6097640511e8aa (HEAD -> master)

RE: nRF5340-PDK power configuration to get +3dBm Tx Power

Jørgen Holmefjord — Thu, 27 Feb 2020 18:18:53 GMT

I did a quick test on my DK. I do not see a full 3 dBm increase, but more in the range of 2 dBm:

Did you test this with the master-branch of NCS?

RE: nRF5340-PDK power configuration to get +3dBm Tx Power

Chris Pezzee — Wed, 26 Feb 2020 19:19:11 GMT

Initially, the output was measured and no bump in output was observed. When I examine the REGULATORS_S values in SES, I see MAINREGSTATUS.VREGH == 0, and the DCDCEN bits of VREGMAIN, VREGRADIO, and VREGH are set to 0x1.

RE: nRF5340-PDK power configuration to get +3dBm Tx Power

Jørgen Holmefjord — Wed, 26 Feb 2020 18:51:08 GMT

Hi,

How do you determine that it is not working (error codes, etc)? Have you tried reading out the registers to see if they are set correctly?

I will try to reproduce what you are seeing.

Best regards,
Jørgen