Hi all, My HW setup is an imx7 with a custom carrier board where the wifi module(AW-CM276NF) is present, this module has the Marvell 8997 BT/Wifi module.
I am currently using some test scripts to activate a continuous TX mode of the module.https://github.com/hychiang73/wlan_script/blob/master/bt_ctx.sh
I measure the output power conducted at the module's output connector and I only see around -20dBm. I am measuring the power in a 10MHz bandwidth, peak is around -30dBm but integrated across the bandwidth I get a total power of around -20dBm
How can I change the output power or put it in such a mode that I get the maximum output of around 4dBm for Bluetooth, I am measuring at the AUX antenna port..
Hi,
The following commands are for you refrence:
1. hcitool -i hci0 cmd 3f 00ee 01 0N --> N is BT max TX power, (Pls try out different values)
2. hcitool -i hci0 cmd 03 0003 --> HCI reset is to make the change on max Tx power take effect.
3. hcitool -i hci0 cmd 03 001a 03 --> Enable Page Scan and Inquiry Scan
4. hcitool -i hci0 cmd 06 0003 (BT Test mode)
5. Run CBT (Link mode) and check the BT TX output power.
Have a great day!
B.R,
weidong
Thanks for the detailed reply, but you left out the vital last step.
What do you mean by run CBT (Link Mode) ?
I tried your 4 steps and no output on the spectrum analyser
Dear eoin_oconnell ,
CBT , here means CBT Bluetooth Tester. for exmaple, CMW270/CMW500.
when bluetooth enters TEST Mode, you can use it to connect with bluetooth.
spectrum analyser can't be used to measure Power.
Have a nice day!
B.R,
weidong