nRF9151: Hardware validation of MIPI RFFE switch

RE: nRF9151: Hardware validation of MIPI RFFE switch

Simonr — Wed, 02 Jul 2025 09:25:22 GMT

I just talked to a colleague about this, and the best way to check for this is to set the device in test mode. This should set the MIPI switch to the correct status depending on which band you're using if you've set up the frequency table first.

Best regards,

Simon

RE: nRF9151: Hardware validation of MIPI RFFE switch

JordanYates — Tue, 01 Jul 2025 01:07:19 GMT

I have already read those AT commands, and as far as I can tell the commands described (%XMIPIRFFEDEV, %XMIPIRFFECTRL) are telling the modem what register settings to use when setting up the switch, not actually communicating with the switch.

The %XMIPIRFFEDBG command is probably the closest command, but is unfortunately limited to the PTI (and also is missing all documentation on the nRF91x1 pages)

%XRFTEST looks like it is available on the full firmware images, would that return an error if the MIPI switch configuration failed?

RE: nRF9151: Hardware validation of MIPI RFFE switch

Simonr — Mon, 30 Jun 2025 14:17:00 GMT

Please check out the MIPI AT commands in nRF91x1 AT Commands. The MIPI RFFE interface access seems to be a good place to start where you can directly access the MIPI RFFE registers on your device.

Best regards,

Simon