5 Replies Latest reply on Mar 25, 2015 4:20 PM by seyhan

    SDK 2.4.1 and SDK 3.1.2 scan result is different

    kyoh

      Hi.

      I am trying to migrate to SDK 3.1.2 from SDK 2.4.1

      By the way result of snip.scan is showing a lot of difference.

       

      Below are the results of 2.4.1

      ==================================================================

      Starting Wiced v2.4.1

      Platform BCM9WCDUSI09 initialised
      Started ThreadX v5.5
      Initialising NetX_Duo v5.6
      Creating Packet pools
      WWD SDIO interface initialised
      WLAN MAC Address : 40:2C:F4:E8:CE:FD
      WLAN Firmware    : wl0: Feb 10 2014 11:29:55 version 5.90.230.7 FWID 01-555f783e
      Waiting for scan results...
        # Type  BSSID             RSSI  Rate Chan Security    SSID
      ----------------------------------------------------------------------------------------------
        0 Infra 3C:A3:15:01:27:57  -78  54.0   1  WEP         ZIO
        1 Infra 74:72:F2:31:B9:5B  -81  54.0   1  WEP         dsinnocar-120
        2 Infra 00:08:9F:66:3C:C5  -80  54.0   7  WPA2 AES    ss
        3 Infra 00:26:66:CA:7B:3C  -50 300.0  11  WPA2 AES    iptime_UM
        4 Infra E8:AB:FA:10:AF:C1  -72 300.0  11  Open        Wifi-Repeater
        5 Infra 64:E5:99:87:5F:A8  -65 150.0   9  WPA AES     iptime_oh
        6 Infra 00:26:66:C8:D5:5A  -77 300.0  11  Open        iptime
        7 Infra 90:9F:33:22:5F:14  -54 300.0   8  WPA2 AES    RND
        8 Infra 64:E5:99:60:7F:9C  -64 300.0   9  WPA2 AES    ES_700Z
        9 Infra 00:0E:2E:E0:CF:88  -53 300.0   6  WPA2 AES    ZIO_smart_Zigbee
      10 Infra 00:01:36:9E:E2:08  -51 300.0   4  WPA2 AES
      11 Infra 00:01:36:9E:E2:06  -51 300.0   4  WPA2 Mixed  SK_WiFiE205

      Scan complete in 1295 milliseconds

      ==================================================================

       

      Below is a result of 3.1.2

      ==================================================================

      Starting WICED v3.1.2
      Platform BCM9WCDUSI09 initialised
      Started ThreadX v5.6
      Initialising NetX_Duo v5.7_sp1
      Creating Packet pools
      WWD SDIO interface initialised
      WLAN MAC Address : 40:2C:F4:E8:CE:FD
      WLAN Firmware    : wl0: Nov  7 2014 16:03:45 version 5.90.230.12 FWID 01-0
      Waiting for scan results...
        # Type  BSSID             RSSI  Rate Chan  Security    SSID
      ----------------------------------------------------------------------------------------------
        0 Infra 00:26:66:CA:7B:3C  -82 300.0   11  WPA2 AES    iptime_UM
        1 Infra 90:9F:33:22:5F:14  -92 300.0    8  WPA2 AES    RND
        2 Infra 00:0E:2E:E0:CF:88  -82 300.0    6  WPA2 AES    ZIO_smart_Zigbee

      Scan complete in 1566 milliseconds

      ==================================================================

       

      Why do I have these differences?

       

      I am using BCM9WCDUSI09 Platform

       

      Thanks

        • 1. Re: SDK 2.4.1 and SDK 3.1.2 scan result is different
          snal

          I don't know the answer, but I do notice in your 3.1.2 scan results the RSSI seems pretty far down "in the dirt" whereas in your 2.4.1 they have a much nicer distribution.   Has something been modified in regards to the antenna selection?   I don't know if it's possible, but do you somehow have antenna diversity enabled in 3.1.2 for a board that doesn't have a 2nd antenna?   Just something I noticed...

          • 2. Re: SDK 2.4.1 and SDK 3.1.2 scan result is different
            kyoh

            Thanks your reply.

             

            I am using the "WM-N-BM-09-EVB" board.

            The same conditions (same board, same place, without changing antenna) with the results obtained by downloading the snip.scan of 2.4.1 and 3.1.2

             

            Thanks...

            • 3. Re: SDK 2.4.1 and SDK 3.1.2 scan result is different
              seyhan

              Hi,

               

              I have tested the USI09 module on different evaluation board and it works the same on both releases, SDK-3.1.2 and SDK-2.4.1.

               

              Do you have specific changes made for your application?

               

              Seyhan

              • 4. Re: SDK 2.4.1 and SDK 3.1.2 scan result is different
                kyoh

                Hi,

                 

                There are no change in my application.

                 

                I'm just add BCM9WCDUSI09 platform.

                 

                In matters discovered during testing, "wifi_nvram_image.h" to copy the file from the SDK-2.4.1 and then download the scan results of it came out almost the same. (Not use"wifi_nvram_image.h" of "platforms.BCM9WCDUSI09.patch")

                 

                I do not know whether the test results are accurate.

                 

                Thanks.

                • 5. Re: SDK 2.4.1 and SDK 3.1.2 scan result is different
                  seyhan

                  Hi,

                   

                  Here is the differences in wifi_nvram_image.h file between 2.4.1 and 3.1.2:

                  18,21d23

                  < #ifdef __cplusplus

                  < extern "C" {

                  < #endif

                  <

                  83,84d84

                  <        "edonthd=-70"                                                        "\x00"

                  <        "edoffthd=-76"                                                      "\x00"

                  86,90d85

                  <

                  <

                  < #ifdef __cplusplus

                  < } /* extern "C" */

                  < #endif

                   

                  Seyhan