WL1835MOD: Calibrator tool apparently unable to modify the TX power level

Francois Charlot

Part Number: WL1835MOD
Other Parts Discussed in Thread: WL1271

Hello,

This question is actually related to WL1271, but this part number could not be entered when entering this question.

My customer has calibrated his device following the TI procedure http://processors.wiki.ti.com/index.php/WL12xx_NLCP_Calibration_Process. This seemed to work well.

Then they tried to test the TX power following http://processors.wiki.ti.com/index.php/WL127x_TX_Testing. The traces show the related command was acknowledged, but no amplitude change was observed on the scope. Could you please suggest what could be wrong?

Attachments: wl127x-nvs.bin and trace

Best regards,
François.

over 6 years ago

0 Francois Charlot over 6 years ago

TI__Mastermind 28417 points

Fullscreen 6266.Traces.txt Download

Using the procedure in http://processors.wiki.ti.com/index.php/WL127x_TX_Testing

Cmd: calibrator wlan0 plt tune_channel 0 1
Traces calibrator:
    cmd: tune_channel <band> <channel>
    handle success
    autocomplete success

Traces driver wl271: 
[ 1354.011413] wl1271: data: 00000000: 08 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1354.011413] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1354.011444] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 5f fb 82 02 00 00 00 00  .>......_.......
[ 1354.011444] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1354.011474] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1354.011474] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1354.011596] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 bd 80 4f 39 0d 8b 2e 8f  .. .......O9....
[ 1354.011627] wl1271: data: 00000010: d7 39 3e 27 36 59 42 fb e3 e5 2a 8d 48 69 9b b4  .9>'6YB...*.Hi..
[ 1354.011627] wl1271: data: 00000020: 9a 97 05 d2 01 48 f1 4a 05 ae 58 0e 13 cc 06 f0  .....H.J..X.....
[ 1354.011657] wl1271: data: 00000030: e0 19 f8 e1 62 32 2a 44 4e b9 4a ac c0 22 59 02  ....b2*DN.J.."Y.
[ 1354.011657] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1367.455017] wl1271: data: 00000000: 17 00 00 00 0d 2b dd 7e 00 01 01 00              .....+.~....
[ 1367.455169] wl1271: data: 00000000: 01 00 00 00                                      ....
[ 1367.455261] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1367.455322] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1367.455413] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1367.455444] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1367.455535] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1367.455596] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1367.455657] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1367.455718] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1367.455780] wl1271: data: 00000000: 10 00 00 00                                      ....
[ 1367.455810] wl1271: data: 00000000: 17 00 01 00                                      ....
[ 1367.455841] wl1271: data: 00000000: 10 00 00 00                                      ....
[ 1367.522430] wl1271: data: 00000000: 04 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1367.522460] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1367.522491] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 db 24 51 03 00 00 00 00  .>.......$Q.....
[ 1367.522491] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1367.522521] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1367.522521] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1367.522644] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 fb a6 47 9c 66 91 6a ce  .. .......G.f.j.
[ 1367.522644] wl1271: data: 00000010: 65 6d ab 54 3a 4e da e8 65 90 19 62 10 1d 40 e5  em.T:N..e..b..@.
[ 1367.522674] wl1271: data: 00000020: 0b dc 90 e1 80 35 00 33 87 30 be a8 ac 9e 26 19  .....5.3.0....&.
[ 1367.522674] wl1271: data: 00000030: d5 12 94 28 90 1e d6 02 e3 7c 06 84 e4 10 e2 eb  ...(.....|......
[ 1367.522705] wl1271: data: 00000000: 02 00 00 00 
                                    ....
===> The outcome is correct as the signal could be observed on the scope.

Cmd: calibrator wlan0 plt tx_tone 2 10000
Traces calibrator:
    cmd: tx_tone <tone type 1|2> <power 0 - 10000>
    handle success
    autocomplete success

Traces driver wl271:
[ 1383.073364] wl1271: data: 00000000: 08 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1383.073394] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1383.073394] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 82 6e 3e 04 00 00 00 00  .>.......n>.....
[ 1383.073425] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1383.073425] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1383.073455] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1383.073516] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 bd 80 4f 39 0d 8b 2e 8f  .. .......O9....
[ 1383.073516] wl1271: data: 00000010: d7 39 3e 27 36 59 42 fb e3 e5 2a 8d 48 69 9b b4  .9>'6YB...*.Hi..
[ 1383.073547] wl1271: data: 00000020: 9a 97 05 d2 01 48 f1 4a 05 ae 58 0e 13 cc 06 f0  .....H.J..X.....
[ 1383.073547] wl1271: data: 00000030: e0 19 f8 e1 62 32 2a 44 4e b9 4a ac c0 22 59 02  ....b2*DN.J.."Y.
[ 1383.073577] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1394.269805] wl1271: data: 00000000: 04 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1394.269836] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1394.269866] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 a9 46 e9 04 00 00 00 00  .>.......F......
[ 1394.269866] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1394.269897] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1394.269897] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1394.270019] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 fb a6 47 9c 66 91 6a ce  .. .......G.f.j.
[ 1394.270050] wl1271: data: 00000010: 65 6d ab 54 3a 4e da e8 65 90 19 62 10 1d 40 e5  em.T:N..e..b..@.
[ 1394.270050] wl1271: data: 00000020: 0b dc 90 e1 80 35 00 33 87 30 be a8 ac 9e 26 19  .....5.3.0....&.
[ 1394.270080] wl1271: data: 00000030: d5 12 94 28 90 1e d6 02 e3 7c 06 84 e4 10 e2 eb  ...(.....|......
[ 1394.270080] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1402.163818] wl1271: data: 00000000: 08 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1402.163848] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1402.163848] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 cb ba 61 05 00 00 00 00  .>........a.....
[ 1402.163879] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1402.163879] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1402.163909] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1402.163970] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 bd 80 4f 39 0d 8b 2e 8f  .. .......O9....
[ 1402.163970] wl1271: data: 00000010: d7 39 3e 27 36 59 42 fb e3 e5 2a 8d 48 69 9b b4  .9>'6YB...*.Hi..
[ 1402.164001] wl1271: data: 00000020: 9a 97 05 d2 01 48 f1 4a 05 ae 58 0e 13 cc 06 f0  .....H.J..X.....
[ 1402.164001] wl1271: data: 00000030: e0 19 f8 e1 62 32 2a 44 4e b9 4a ac c0 22 59 02  ....b2*DN.J.."Y.
[ 1402.164031] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1410.023529] wl1271: data: 00000000: 04 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1410.023559] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1410.023559] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 8c a8 d9 05 00 00 00 00  .>..............
[ 1410.023590] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1410.023590] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1410.023620] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1410.023742] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 fb a6 47 9c 66 91 6a ce  .. .......G.f.j.
[ 1410.023742] wl1271: data: 00000010: 65 6d ab 54 3a 4e da e8 65 90 19 62 10 1d 40 e5  em.T:N..e..b..@.
[ 1410.023773] wl1271: data: 00000020: 0b dc 90 e1 80 35 00 33 87 30 be a8 ac 9e 26 19  .....5.3.0....&.
[ 1410.023773] wl1271: data: 00000030: d5 12 94 28 90 1e d6 02 e3 7c 06 84 e4 10 e2 eb  ...(.....|......
[ 1410.023803] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1417.622039] wl1271: data: 00000000: 08 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1417.622070] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1417.622070] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 4d 9a 4d 06 00 00 00 00  .>......M.M.....
[ 1417.622100] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1417.622100] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1417.622131] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1417.622192] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 bd 80 4f 39 0d 8b 2e 8f  .. .......O9....
[ 1417.622192] wl1271: data: 00000010: d7 39 3e 27 36 59 42 fb e3 e5 2a 8d 48 69 9b b4  .9>'6YB...*.Hi..
[ 1417.622222] wl1271: data: 00000020: 9a 97 05 d2 01 48 f1 4a 05 ae 58 0e 13 cc 06 f0  .....H.J..X.....
[ 1417.622222] wl1271: data: 00000030: e0 19 f8 e1 62 32 2a 44 4e b9 4a ac c0 22 59 02  ....b2*DN.J.."Y.
[ 1417.622253] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1426.420532] wl1271: data: 00000000: 04 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1426.420562] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1426.420562] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 3a db d3 06 00 00 00 00  .>......:.......
[ 1426.420593] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1426.420593] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1426.420623] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1426.420684] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 fb a6 47 9c 66 91 6a ce  .. .......G.f.j.
[ 1426.420715] wl1271: data: 00000010: 65 6d ab 54 3a 4e da e8 65 90 19 62 10 1d 40 e5  em.T:N..e..b..@.
[ 1426.420715] wl1271: data: 00000020: 0b dc 90 e1 80 35 00 33 87 30 be a8 ac 9e 26 19  .....5.3.0....&.
[ 1426.420745] wl1271: data: 00000030: d5 12 94 28 90 1e d6 02 e3 7c 06 84 e4 10 e2 eb  ...(.....|......
[ 1426.420745] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1434.940826] wl1271: data: 00000000: 08 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1434.940856] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1434.940856] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 87 dd 55 07 00 00 00 00  .>........U.....
[ 1434.940887] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1434.940887] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1434.940917] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1434.941040] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 bd 80 4f 39 0d 8b 2e 8f  .. .......O9....
[ 1434.941040] wl1271: data: 00000010: d7 39 3e 27 36 59 42 fb e3 e5 2a 8d 48 69 9b b4  .9>'6YB...*.Hi..
[ 1434.941070] wl1271: data: 00000020: 9a 97 05 d2 01 48 f1 4a 05 ae 58 0e 13 cc 06 f0  .....H.J..X.....
[ 1434.941070] wl1271: data: 00000030: e0 19 f8 e1 62 32 2a 44 4e b9 4a ac c0 22 59 02  ....b2*DN.J.."Y.
[ 1434.941101] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1443.808532] wl1271: data: 00000000: 04 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1443.808563] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1443.808563] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 1f 2d dd 07 00 00 00 00  .>.......-......
[ 1443.808593] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1443.808593] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1443.808624] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1443.808715] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 fb a6 47 9c 66 91 6a ce  .. .......G.f.j.
[ 1443.808715] wl1271: data: 00000010: 65 6d ab 54 3a 4e da e8 65 90 19 62 10 1d 40 e5  em.T:N..e..b..@.
[ 1443.808746] wl1271: data: 00000020: 0b dc 90 e1 80 35 00 33 87 30 be a8 ac 9e 26 19  .....5.3.0....&.
[ 1443.808746] wl1271: data: 00000030: d5 12 94 28 90 1e d6 02 e3 7c 06 84 e4 10 e2 eb  ...(.....|......
[ 1443.808776] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1452.950958] wl1271: data: 00000000: 08 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1452.950988] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1452.950988] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 1e ae 68 08 00 00 00 00  .>........h.....
[ 1452.951019] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1452.951019] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1452.951019] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1452.951110] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 bd 80 4f 39 0d 8b 2e 8f  .. .......O9....
[ 1452.951110] wl1271: data: 00000010: d7 39 3e 27 36 59 42 fb e3 e5 2a 8d 48 69 9b b4  .9>'6YB...*.Hi..
[ 1452.951141] wl1271: data: 00000020: 9a 97 05 d2 01 48 f1 4a 05 ae 58 0e 13 cc 06 f0  .....H.J..X.....
[ 1452.951141] wl1271: data: 00000030: e0 19 f8 e1 62 32 2a 44 4e b9 4a ac c0 22 59 02  ....b2*DN.J.."Y.
[ 1452.951171] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1461.839447] wl1271: data: 00000000: 04 00 00 00 07 00 00 00 00 19 00 01 01 17 00 01  ................
[ 1461.839477] wl1271: data: 00000010: 02 19 00 01 03 27 00 01 04 27 00 01 05 3e 00 01  .....'...'...>..
[ 1461.839508] wl1271: data: 00000020: 06 3e 00 01 00 00 00 00 73 4e f0 08 00 00 00 00  .>......sN......
[ 1461.839508] wl1271: data: 00000030: 00 00 00 00 00 00 00 00 63 00 00 00 00 00 00 00  ........c.......
[ 1461.839538] wl1271: data: 00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[ 1461.839538] wl1271: data: 00000050: 02 26 00 00                                      .&..
[ 1461.839660] wl1271: data: 00000000: 00 00 20 00 fe 1b 89 03 fb a6 47 9c 66 91 6a ce  .. .......G.f.j.
[ 1461.839660] wl1271: data: 00000010: 65 6d ab 54 3a 4e da e8 65 90 19 62 10 1d 40 e5  em.T:N..e..b..@.
[ 1461.839691] wl1271: data: 00000020: 0b dc 90 e1 80 35 00 33 87 30 be a8 ac 9e 26 19  .....5.3.0....&.
[ 1461.839691] wl1271: data: 00000030: d5 12 94 28 90 1e d6 02 e3 7c 06 84 e4 10 e2 eb  ...(.....|......
[ 1461.839721] wl1271: data: 00000000: 02 00 00 00                                      ....
[ 1467.479248] wl1271: data: 00000000: 17 00 00 00 08 00 00 00 02 00 00 00 10 27 00 00  .............'..
[ 1467.479431] wl1271: data: 00000000: 01 00 00 00                                      ....
[ 1467.479553] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1467.479614] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1467.479675] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1467.479736] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1467.479797] wl1271: data: 00000000: 00 00 00 00                                      ....
[ 1467.479858] wl1271: data: 00000000: 10 00 00 00                                      ....
[ 1467.479919] wl1271: data: 00000000: 17 00 01 00                                      ....
[ 1467.479919] wl1271: data: 00000000: 10 00 00 00                                      ....

===> The outcome is incorrect as the signal amplitude does not change on the scope.

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/968/wl127x_2D00_nvs.7z

0 Rizwan Murji over 6 years ago in reply to Francois Charlot

TI__Genius 12740 points

Hi Francois,

I hope all is well. When using the calibrator commands and the .INI file there are certain limits that may not allow you to increase/decrease the output power.

As an example if you try to set the output power to 20dBm via the calibrator command, for CH1 at 2.4GHz, you will not be able to do this as the .INI file may be limited to say 15dB for regulatory reasons. Thus setting anywhere between 15 to 20dBm will result in the same power level. IF you start to set the output power to below the .INI limit, then only will you see a change in output powr.

You can refer to the complete set of calibrator commands here: processors.wiki.ti.com/.../WL18xx_TX_Testing

In particular you want to look at the Set TX Power command. Within this command there are 2 parameters that you can edit to override the output power if needed:
1) channel_limitation: This will override the .INI file limit (set to 0 to disable INI file limit)
2) gain_calculation_mode : This will override the backoff from the PA to allow maxim output power (set to 2 to overide BO limit).

Both are used to allow maximum output power.

I hope this helps.

Thanks,
Riz

Wi-Fi

Wi-Fi forum

WL1835MOD: Calibrator tool apparently unable to modify the TX power level