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Linux/WL1835MODCOM8B: WiFi continuous TX for 20Mhz

Ankit Bhalani
Intellectual 630 points
Part Number: WL1835MODCOM8B
Other Parts Discussed in Thread: WL1835

Tool/software: Linux

Hi,


I have tested the continuous TX test for WL1835 for 20Mhz upper and 20Mhz lower. Followed the commands as described in below link

Link : processors.wiki.ti.com/.../WL18xx_TX_Testing

- Commands mentioned in section 2) 20MHz Primary Upper and 3) 20MHz Primary Lower

But I did not get the output as defined in above link in DSO.

For both the case we got the same output. The utility used which gives proper output for other cases mentioned in above link ( like 20Mhz, 40 Mhz upper, 40Mhz lower etc.)

I have attached photos of the output that i have got in DSO for 20Mhz upper and 20 Mhz lower.

Thanks,

Ankit

  • 0
    TI__Mastermind 29250 points
    Ankit,

    This query has been assigned to a relevant expert. We will get back to you shortly,

    Best regards,
    Vihang
  • 0 in reply to Vihang Parmar
    TI__Genius 12260 points
    Hi Ankit,

    Have you been able to resolve your issue? If not, please provide the exact details of the command you are using.

    Thanks,
    Riz
  • 0 in reply to Rizwan Murji
    Intellectual 630 points
    Hi Riz,

    The issue is still not resolved. We are using below commands for 20Mhz Primary Upper/Lower Tx test.

    Commands for 20Mhz Primary Upper:

    calibrator wlan0 wl18xx_plt stop_tx
    calibrator wlan0 wl18xx_plt tune_channel 7 0 2
    calibrator wlan0 wl18xx_plt set_tx_power 20000 0 0 7 1 0 0 1 0 0 0 0
    calibrator wlan0 wl18xx_plt start_tx 400 19 3000 0 0 1 0 0 00:11:22:33:44:55 01:02:03:04:05:06 0

    Commands for 20Mhz Primary Lower:

    calibrator wlan0 wl18xx_plt stop_tx
    calibrator wlan0 wl18xx_plt tune_channel 7 0 3
    calibrator wlan0 wl18xx_plt set_tx_power 20000 0 0 7 -1 0 0 1 0 0 0 0
    calibrator wlan0 wl18xx_plt start_tx 400 19 3000 0 0 1 0 0 00:11:22:33:44:55 01:02:03:04:05:06 0

    The above command s are as same as mentioned in below link
    Link : processors.wiki.ti.com/.../WL18xx_TX_Testing

    Thanks
    Ankit
  • 0 in reply to Ankit Bhalani
    TI__Prodigy 620 points

    Ankit,

    Basically your observation is right. The output in both cases should be the same (as you can also see in the link you used).

    In both cases the output is between channels 5-9.

    In order to achieve the other 2 cases you described you need to change the value in the set_tx_power command:

    calibrator wlan0 wl18xx_plt stop_tx
    calibrator wlan0 wl18xx_plt tune_channel 7 0 2
    calibrator wlan0 wl18xx_plt set_tx_power 20000 0 0 7 1 0 0 -1 0 0 0 0
    calibrator wlan0 wl18xx_plt start_tx 400 19 3000 0 0 1 0 0 00:11:22:33:44:55 01:02:03:04:05:06 0

    and:

    calibrator wlan0 wl18xx_plt stop_tx
    calibrator wlan0 wl18xx_plt tune_channel 7 0 3
    calibrator wlan0 wl18xx_plt set_tx_power 20000 0 0 7 1 0 0 1 0 0 0 0
    calibrator wlan0 wl18xx_plt start_tx 400 19 3000 0 0 1 0 0 00:11:22:33:44:55 01:02:03:04:05:06 0

    Guy