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CC3120: CC3120 [ERROR] - FATAL ERROR: Sync loss detected n

andre feng
Expert 1060 points
Part Number: CC3120
Other Parts Discussed in Thread: UNIFLASH

CC3120 WIFI board customized according to CC3120 boost.

SDK :  

simplelink_sdk_wifi_plugin_2_30_00_10

simplelink_msp432p4_sdk_2_30_00_14

The service package to the Flash SPI is sp_3.9.0.6_2.0.0.0_2.2.0.6.bin.

The schematic is shown in the attachment.

The current problem is:

After executing the network_terminal case, the error message is as follows:

[ERROR] - FATAL ERROR: Sync loss detected n

[line:946, error code:-2005] Device error, please refer "DEVICE ERRORS CODES" section in errors.h

Network Terminal - Couldn't configure Network Processor

The program runs to Mode = sl_Start(0, 0, 0); the function stops.

Measuring pins found:

The HOST_INTR (IRQ) pin timing is high to low and then high. Contrary to normal CC3120 boost timing (low to high, then low).

I would like to ask the customized CC3120 WIFI board, in addition to burning sp_3.9.0.6_2.0.0.0_2.2.0.6.bin, do you need to burn other files?

What are the reasons for the above error reporting? How to solve it?

I hope to get your help.

Thank you.JN_WIFI_2RSLKB01_V0.3.pdf

Andre

  • 0
    TI__Mastermind 30870 points
    Hi Andre,

    Please check the settings for the input I/O on the host MCU side to make sure there are no internal pull-ups on the host IRQ line. Also, verify that the interrupt convention (edge-triggered vs. level-triggered) is correct based on the implementation of the porting layer. One potential test to isolate the issue from HW vs. device configuration would be to connect your host on the board to a CC3120 boosterpack instead of the on-board CC3120 and see if the behavior of the HOST_INTR pin is as expected in that setup.

    Best,
    Ben M
  • 0 in reply to Benjamin Moore
    Expert 1060 points

    Hi Ben M,

    Thank you for your reply.

    I can now run successfully using the network_termine case.

    When I use the scan -n 20 command to search for WIFI, I can only search for WIFI below.

    But other WIFI SSIDs are not searchable. 

    The picture below is the WIFI I searched by mobile phone.

    Do you know what causes other WIFI SSIDs not to be searched ?

    Thank you.

    Best,

    Andre

  • 0 in reply to andre feng
    Guru 39650 points
    Hi Andre,

    Please make sure that other networks are not 5GHz. Also you may to have some hardware issue with your RF design. The RSSI -88dBm is very poor signal, but at your phone have that network very good signal.

    Jan
  • 0 in reply to Hnz
    Expert 1060 points

    Hi, Jan

    Other networks are not 5GHz.

    The RF design circuit diagram is as follows：

    Do you have any suggestions?

    Best,

    Andre

  • 0 in reply to andre feng
    Guru 80505 points

    Hi Andre,

    Sorry, I am not able to help you with these RF design aspects. Please wait to answer from TI engineer. But I think you should share your RF layout as well.

    I am not expert at this points, but I think there are two important aspects for proper wireless performance:

    Jan

  • 0 in reply to Jan D
    TI__Mastermind 30870 points
    Hi Andre,

    Do you have one of our EVMs that you can test with before diving into the design? I recommend running the network terminal on an EVM just to make sure they appear as expected.

    The other thing to check would be the channel that those APs are operating on and the country code/region the device is configured for.

    Best,
    Ben M
  • 0 in reply to Benjamin Moore
    Expert 1060 points

    Hi Ben M,

    Running the network terminal on the EVM can be performed as expected.

    The EVM display is shown below：

    The other thing to check would be the channel that those APs are operating on and the country code/region the device is configured for.

    I don't understand this sentence. I didn't see the configuration in the network_termine case.

    Where is the configuration you said?

  • 0 in reply to Benjamin Moore
    Expert 1060 points
    Hi Ben M,

    Our custom WIFI board can only find signals that can use WPS.

    What causes it to only search for WPS ？
    Whether it is related to this configuration ?

    Best，
    Andre
  • 0 in reply to andre feng
    TI__Mastermind 30870 points
    Hi Andre,

    The device will be configured to a specific country code / regulatory domain. This can be set with a call to the host driver or UniFlash Image Creator. See page 40 of the network processor programmer's guide and the UniFlash ImageCreator guide:
    http://www.ti.com/lit/swru455
    http://www.ti.com/lit/swru469

    I wouldn't expect there would be something that would limit you to only seeing networks using WPS. Actually, it looks like you detect one WPA2 network on your custom board in your previous post.

    Best,
    Ben M
  • 0 in reply to Benjamin Moore
    Expert 1060 points

    Hi,

    Sorry, I am on vacation, the reply is late.

    I see page 40 of the network processor programmer's guide and the UniFlash ImageCreator guide.   No instructions were found to resolve the issue.

    Customized CC3120 WIFI board, sometimes can find the following signals, sometimes not found. The information is as follows：

    The signals that can be found using the CC3120-BOOST EVM are as follows：

    RF circuit diagram in the above link.

    Customized boards can only search for one signal or no search for signals. What are the reasons ?

    Best,

    Ben M

  • 0 in reply to Benjamin Moore
    Expert 1060 points

    Hi Ben M,

    UniFlash Image Creator uses the Simple mode, and the configuration parameters are as shown below:

    Is the configured parameters correct?  

    About the CC3120 antenna When searching for signals, do you need other configurations besides running the network_terminal case and burning the sp_3.9.0.6_2.0.0.0_2.2.0.6.bin firmware?

    Best

    Andre

  • 0 in reply to Benjamin Moore
    Expert 1060 points

    Hi Ben M,

    UniFlash Image Creator programming firmware is shown below, is the configuration correct?

    About the CC3120 antenna When searching for signals, do you need other configurations besides running the network_terminal case and burning the sp_3.9.0.6_2.0.0.0_2.2.0.6.bin firmware?

    Best

    Andre

  • 0 in reply to andre feng
    TI__Mastermind 30870 points
    Hi Andre,

    Is this the same configuration you use on the LP when you see it scan and display all of the networks?

    Thanks,
    Ben M
  • 0 in reply to Benjamin Moore
    Expert 1060 points
    Hi Ben M,

    I don't understand the LP you said, can you talk about LP in detail?

    Thanks,
    Andre
  • 0 in reply to andre feng
    TI__Mastermind 30870 points

    Hi Andre,

    Sorry, LP means LaunchPad. 

    Best,
    Ben M