# Missing le\_data interface

**URL:** <https://forum.legato.io/t/missing-le-data-interface/134>\
**Category:** Legato Application Framework\
**Created:** [May 12, 2015, 1:06pm UTC](https://forum.legato.io/t/missing-le-data-interface/134 "2015-05-12T13:06:46Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![maennel](https://avatars.discourse-cdn.com/v4/letter/m/53a042/32.png) [@maennel](https://forum.legato.io/u/maennel)\
**Post date:** [May 12, 2015, 1:06pm UTC](https://forum.legato.io/t/missing-le-data-interface/134/1 "2015-05-12T13:06:46Z")

</div>

😈😈😈😈 Hi.

Still working with AR7556 on our target hardware, but have no luck with mobile data access. I implement a network controller that binds to le\_data. Wondering why the component init finction is not executed. sdir list gives some hints:

[code]root@futuretelematics:~# sdir list

BINDINGS

```
    <root>.sdirTool -> <root>.sdirTool
    <root>.LogControl -> <root>.LogControl
    <root>.le_sup_ctrl -> <root>.le_sup_ctrl
    <root>.le_sup_state -> <root>.le_sup_state
    <root>.le_sup_wdog -> <root>.le_sup_wdog
    <root>.le_cfg -> <root>.le_cfg
    <root>.le_cfgAdmin -> <root>.le_cfgAdmin
    <root>.le_mdc -> <root>.le_mdc
    <root>.le_mrc -> <root>.le_mrc
    <root>.le_sim -> <root>.le_sim
    <root>.le_sms -> <root>.le_sms
    <root>.le_fwupdate -> <root>.le_fwupdate
    <root>.le_data -> <root>.le_data
    <root>.le_info -> <root>.le_info
    <root>.le_pos -> <root>.le_pos
    <root>.le_posCtrl -> <root>.le_posCtrl
    <root>.cellNetService.cellNetService.le_cfg -> <root>.le_cfg
    <root>.cellNetService.cellNetService.le_mrc -> <root>.le_mrc
    <root>.cellNetService.cellNetService.le_sim -> <root>.le_sim
    <root>.dcsDaemon.dataConnectionService.le_cellnet -> <root>.le_cellnet
    <root>.dcsDaemon.dataConnectionService.le_cfg -> <root>.le_cfg
    <root>.dcsDaemon.dataConnectionService.le_mdc -> <root>.le_mdc
    <root>.dcsDaemon.dataConnectionService.le_mrc -> <root>.le_mrc
    <root>.dcsDaemon.dataConnectionService.le_sim -> <root>.le_sim
    <root>.modemDaemon.modemDaemon.le_audio -> <root>.le_audio
    <root>.modemDaemon.modemDaemon.le_cfg -> <root>.le_cfg
    <root>.modemDaemon.modemDaemon.le_pm -> <root>.le_pm
    <root>.posDaemon.posDaemon.le_cfg -> <root>.le_cfg
    <root>.LogClient -> <root>.LogClient
    <root>.voiceCallService.voiceCallService.le_mcc_call -> <root>.le_mcc_call
    <root>.voiceCallService.voiceCallService.le_mcc_profile -> <root>.le_mcc_profile

```

SERVICES

```
    <root>.sdirTool (protocol ID = 'sdirTool', max message size = 268 bytes)
    <root>.LogClient (protocol ID = 'LogControlProtocol', max message size = 300 bytes)
    <root>.LogControl (protocol ID = 'LogControlProtocol', max message size = 300 bytes)
    <root>.le_cfg (protocol ID = '9dc5b2438c9592bf35478c68b2ccb9b98de2966994582a00d1fbfbf9696b607e', max message size = 1004 bytes)
    <root>.le_cfgAdmin (protocol ID = '973013e67043ad6e6449a1c75aed2937570c0ea5ebaf7b621c61c26f2cb46613', max message size = 1004 bytes)
    <root>.le_sup_ctrl (protocol ID = '2b977a867fd23987d4186cef497320eaf0548b548f0c54f9e06758a2713100e9', max message size = 1004 bytes)
    <root>.le_sup_wdog (protocol ID = '2009d178ea21adf594c52414142d823048d9539a18a6ad48762302d7763f4fc9', max message size = 1004 bytes)
    <root>.le_sup_state (protocol ID = 'eae6bae687e5624b7f7b61e6d76653d5cf7ca7dc6a161652412da5457634d9c6', max message size = 1004 bytes)
    <root>.le_wdog (protocol ID = '4cb07efd859b58751cc5ea09134b555b0ab30957ca7aa68772eb1de1edeeae3d', max message size = 1004 bytes)
    <root>.le_avc (protocol ID = 'e97f2cd4c04b94335be7bb58f5d46fb5ea98669becd1423f1e7475c8be884a52', max message size = 1004 bytes)
    <root>.le_antenna (protocol ID = 'd580b40f33f314064958ec052c6a279b9d065f930c3a331c38dc35267a2f03c6', max message size = 1004 bytes)
    <root>.le_pm (protocol ID = '721a67e77c5f65da2056fc7e91b1f1c7238245e5cc5b95c70d4455978566af16', max message size = 1004 bytes)
    <root>.le_secStore (protocol ID = '682a132a00535deee10c25f46535c84edf8f2514c0eee3c977773bb36284c8d4', max message size = 1004 bytes)
    <root>.le_gnss (protocol ID = '12fff060981db1dcc210b4a566be0155ded109a865fb77da85646b9171b8470b', max message size = 1004 bytes)
    <root>.le_pos (protocol ID = '3f8357fec6d610c7bf0cd5b95083e7768bdc22ba3819bf5b80b2c492234f4591', max message size = 1004 bytes)
    <root>.le_posCtrl (protocol ID = 'e33f0f8f7f9c0f0d74ca59ada322dbc16eb38603f7340caa23d17c8bad22f3bf', max message size = 1004 bytes)

```

WAITING CLIENTS

```
    [pid 8036] <root>.le_data WAITING for <root>.le_data (protocol ID = '022cdee162039dc807bc4bc4972ac9090ea11b221e0c43005ab8faba7840d911')
    [pid 8058] <root>.cellNetService.cellNetService.le_mrc WAITING for <root>.le_mrc (protocol ID = 'c5da8917f55ed18a91ac4ac416c1ae65cc43e194ff182e988a338744e856bee1')
    [pid 8060] <root>.dcsDaemon.dataConnectionService.le_cellnet WAITING for <root>.le_cellnet (protocol ID = '94b49727ca0a34aae55bf469e20d1253297e79730f69fa20ab61e46f0dfe4152')
    [pid 8077] <root>.modemDaemon.modemDaemon.le_audio WAITING for <root>.le_audio (protocol ID = 'de780ed553ac1f2092ded6c34caabcc322fc7e32785cf650ccc6158be3a6035d')
    [pid 8100] <root>.voiceCallService.voiceCallService.le_mcc_call WAITING for <root>.le_mcc_call (protocol ID = 'c3ebec4e6dbf255d0232b7ac1b1f40b25cca87426f70491c2531e55769be0344')

```

[/code]  
As you can see there is a dependency chain down to le\_mrc!

Why does the component serving the le\_mrc is not coming up? Is this related to useage of the AR7556 in european area? AR7556 is designed for China without integrated audio codec.

I’m running

```auto
root@futuretelematics:~# legato version
15.01.0.Beta-1-g157af17
root@futuretelematics:~# legato status
Legato framework is running.
root@futuretelematics:~# 
```

Maybe a hint, fwupdate and cm programs also do not run. They just do nothing, no error message. Apps are running:

```auto
root@futuretelematics:~# app status
[running] airvantage
[stopped] audioService
[running] avcService
[running] cellNetService
[running] dataConnectionService
[running] modemService
[running] monService
[running] positioningService
[running] powerMgr
[running] secStore
[running] voiceCallService
```

I have this problem with SIM inserted and with no SIM.

Please help finding the root cause.

Some more infos on used hardware:

[code]AT+CGMR  
SWI9X15A\_06.03.39.00 r26591 CNSHZ-AR-BUILD 2015/01/29 00:28:10

AT+CGMM  
AR7556

AT+GCAP  
+GCAP: +CGSM,+FCLASS,+DS

AT+CFUN?  
+CFUN: 1

AT+CPAS  
+CPAS: 0[/code]

My second development device is an AR7550. This does not show these problems, although the firmware is older!

`root@futuretelematics:~# legato version
15.01.0.Beta-1-g157af17
root@futuretelematics:~# fwupdate query
Firmware Version: SWI9X15A_06.03.32.00 r25917 CNSHZ-AR-BUILD 2014/12/13 09:06:29
Bootloader Version: SWI9X15A_06.03.32.00 r25917 CNSHZ-AR-BUILD 2014/12/13 09:06:29
Linux Version: 3.4.91-yocto-standard #10 PREEMPT Mon May 11 11:02:44 CEST 2015`

My AR7556 is broken by failed update process?

Tried to restore the firmware by executing SWI9X15W\_06.03.39.00-wp\_yocto-cwe.exe under windows fails with error code 77.

Not healed by restoring base software with SWI9X15W\_06.03.39.00-ar\_yocto-cwe.exe and reinstalling legato framework. All my tries failed, there must be something special about the AR7556 device!

PLEASE help!

---

<div class="post-metadata">

**Author:** ![esun](https://avatars.discourse-cdn.com/v4/letter/e/8e7dd6/32.png) [@esun](https://forum.legato.io/u/esun)\
**Post date:** [May 21, 2015, 11:41pm UTC](https://forum.legato.io/t/missing-le-data-interface/134/2 "2015-05-21T23:41:16Z")

</div>

Please refer to your other thread for my response regarding this subject: [viewtopic.php?f=177&t=8816&p=35944#p35944](https://forum.sierrawireless.com/viewtopic.php?f=177&t=8816&p=35944#p35944)

As for failing the update process, you are currently trying to apply a WP7 firmware package SWI9X15W\_06.03.39.00-wp\_yocto-cwe.exe on an AR7. That is why it is failing. To get access to the AR7 firmware package, you will need to contact your FAE.

Thanks,  
Enoch