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TIDC-WL1835MODCOM8B: WL18xx TX Testing

Dimas Andy Kurniawan
Intellectual 300 points
Part Number: TIDC-WL1835MODCOM8B

Hi!

I tried to follow instruction as mentioned on article below, 

Site: 

http://processors.wiki.ti.com/index.php/WL18xx_TX_Testing

Command: 

Site calibrator wlan0 wl18xx_plt start_tx <delay> <rate> <size> <mode> <data_type> <gi> <options1>
<options2> <source MAC> <dest MAC> <channel_width>

Command Description:

  1. <source MAC> Source MAC address (xx:xx:xx:xx:xx:xx)
  2. <dest MAC> Destination MAC address (xx:xx:xx:xx:xx:xx)

If i tried to run command "ifconfig | grep HWAddr" on my EVM, we found the results as below,

  1. docker0: 02:42:E5:CC:75:1F
  2. eth0: 98:5D:AD:34:37:96
  3. wlan0: 50:65:83:2B:A2:D5

So, my question is which one MAC address for <source MAC> and for <dest MAC>?

Another question, if we perform TX Continuous Test as command below,

  • calibrator wlan0 wl18xx_plt stop_tx
  • calibrator wlan0 wl18xx_plt tune_channel 7 0 1
  • calibrator wlan0 wl18xx_plt set_tx_power 20000 0 0 7 0 0 0 1 0 0 0 0
  • calibrator wlan0 wl18xx_plt start_tx 500 3 500 0 0 1 0 0 00:11:22:33:44:55 01:02:03:04:05:06 0

Is it any command to ensure if signal has transmitted?

Awaiting your soonest reply.

Thank You.

Dimas

  • 0
    TI__Genius 12260 points

    Hi Dimas,

    I hope all is well. First, since you are using calibrator, I assume that you are running with the Host. For TX there is no need to set the Source or Destination MAC as in this case you are operating the WL18xx in test mode. Thus you would want to look at the signal on a Spectrum Analyzer or a test box such as the IQview. Calibrator commands are not meant to be used or connect to an AP.

    you can run the above command set and they see if you are transmitting on the channel with a Spectrum Analyzer. In this case you will be transmitting on CH 7.

    Thanks,

    Riz

  • 0 in reply to Rizwan Murji
    Intellectual 300 points

    Dear Riz,

    How if we got the result with minus value as my photo below? Is there any specific command to rectify this issue? Because i must get output power in positive value (around 12dBm). 

    This is my command that entered into EVM,

    ifconfig wlan0 down
    cd /usr/share/wl18xx/
    calibrator wlan0 plt power_mode on

    calibrator wlan0 wl18xx_plt stop_tx
    calibrator wlan0 wl18xx_plt tune_channel 1 0 1
    calibrator wlan0 wl18xx_plt set_tx_power 20000 0 0 1 0 0 0 1 0 0 0 0
    calibrator wlan0 wl18xx_plt start_tx 500 3 500 0 0 1 0 0 00:11:22:33:44:55 01:02:03:04:05:06 0

    Awaiting your soonest reply.

    Thank You.

    -Dimas-

  • 0 in reply to Dimas Andy Kurniawan
    TI__Genius 12260 points

    Hi Dimas,

    There could be 2 issues here (I am assuming you are using the TI HW):

    1) On the board, there is jumper resistor/capacitor that needs to be moved so that you can move the signal from the default on board antenna to the U.FL connector. For ANT1, which is the primary antenna, you need to ensure that C5 is moved to the C7 location. This will send the signal to the U.FL connector. You can see this on page 3 of the user guide here: http://www.ti.com/lit/ug/swru359e/swru359e.pdf. If you did not move this, then you will have a lower power as you are seeing.

    2) If you already moved the resistor, then you may not have set up the antennas correctly in calibrator. Please try to add the following after the Power_mode_on command:

    calibrator dev wlan0 wl18xx_plt set_antenna_mode_24G 2 2 0 1 0 1

    This will ensure that internal to the device that you are routing the RF to ANT1 (primary antenna).

     

    I hope this helps.

     

    Thanks,

    Riz