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Original question:

CC2530 RSSI VALUE

CC2530: How to get the RSSI values from a module with CC2530 chip?

Sehan Samarakoon
Prodigy 95 points
Part Number: CC2530
Other Parts Discussed in Thread: Z-STACK

I have a ZigBee module of some other manufacturer with a TI CC2530 chip inside it. I need to know how I can get the RSSI values from it. For now I can only give commands and send data in hex format from a serial monitor. The manufacturer have not specified any command to get the RSSI.

I went through some of the threads here and found that I can change the AF.h file in Z-stack to get the RSSI. I already downloaded the TI Z-stack. I want to know what I should change in the AF.h or any other file and how I can write those files into my chip? What software should I use? Do I need to use the CC debugger also?

Any documentation or a step by step guide for this would be really valuable.

Thank You

  • 0
    Guru 735595 points

    You can try to get rssi/lqi from afBuildMSGIncoming.

  • 0 in reply to YiKai Chen
    Prodigy 95 points

    Hi Yikai,

    Thank you for the reply. What should I change in the afBuildMSGIncoming to get the RSSI? Any documentation regarding this?

    And how do I write this code onto the module?

    Thanks

  • 0 in reply to Sehan Samarakoon
    Guru 735595 points

    If you check afBuildMSGIncoming source code, it already gives you rssi/lqi.

  • 0 in reply to YiKai Chen
    Prodigy 95 points

    Yes. But I have this module which uses the TI CC2530 where I can only send the data using a Serial Monitor in Hex format as specified by the manufacturer.

    I need to know how I can access the CC2530 chip from my computer to get the RSSI. Do I need to use any TI software like IAR Workbench or SmartRF to write this onto the chip?

    Thanks

  • 0
    TI__Guru**** 210987 points

    Hi Sehan,

    Looking at the Monitor and Test API Guide you can see that the RSSI is returned by MAC_DATA_IND and LinkQuality is returned by AF_INCOMING_MSG.  MT_AF_CB_FUNC is defined in the Z-Stack 3.0.2 ZNP project by default but I don't know which version you are using.  MT_MAC_CB_FUNC is not defined so as YK mentioned you would need to modify the firmware and program the CC2530 accordingly.

    Regards,
    Ryan

  • 0 in reply to Ryan Brown1
    Prodigy 95 points

    Hi Ryan,

    Is there a way that I can have a look at the firmware that is already in my module? Because for now, I can only send and receive data as hex strings from a Serial Monitor.

    Thanks

    Sehan

  • 0 in reply to Sehan Samarakoon
    Guru 735595 points

    It's not feasible to guess what firmware is running on your module. However, if you know and can post what hex strings are sent and received, maybe we can guess accordingly.

  • 0 in reply to YiKai Chen
    Prodigy 95 points

    These are the specified hex strings to send data from an end device and what is received at the coordinator .

  • 0 in reply to Sehan Samarakoon
    Guru 735595 points

    This looks like proprietary command. You might need to contact who passes you the document.

  • 0 in reply to YiKai Chen
    Prodigy 95 points

    Ok. Another question is can I get the RSSI value and PER from my module using SmartRF Studio 7 if I connect it through a CC debugger to my PC?

    Thanks

  • 0 in reply to Sehan Samarakoon
    Guru 735595 points

    SmartRD Studio 7 PER test can give you RSSI.

  • 0 in reply to YiKai Chen
    Prodigy 95 points

    Hi Yikai,

    As you said the rssi is already defined in afBuildMSGIncoming. I need to know how I can call this function? I don't need to flash the firmware if it is already defined right? Can I use an arduino to call this function?

    I'm pretty new to this and i'm not that well equipped with programming too. So your guidance is valuable.

    Thank You

  • 0 in reply to Sehan Samarakoon
    Guru 735595 points

    afBuildMSGIncoming is a C function in Z-Stack so you have to run Z-Stack example on your CC2530 to get the rssi in afBuildMSGIncoming.

  • 0 in reply to YiKai Chen
    Prodigy 95 points

    How can I run it? Do I need to flash the hex file in the folder into the CC2530?

  • 0 in reply to Sehan Samarakoon
    Guru 735595 points

    There are Z-Stack 3.0 Sample Application User's Guide.pdf and Z-Stack 3.0 Developer's Guide.pdf in Z-Stack document folder. You can refer to them to run examples.

  • 0 in reply to Sehan Samarakoon
    TI__Guru**** 210987 points

    Hi Sehan,

    You may be looking for the ZNP solution with a MT interface communicating through a host processor or Z-Tool, here is a recent similar thread.

    Regards,
    Ryan

  • 0 in reply to Ryan Brown1
    Prodigy 95 points

    Hi Ryan,

    Well what I want to do is get the RSSI or LQI values from my CC2530. Currently, I just use a serial interface for sending hex strings in order to send/receive data and obtain other information(Setting PAN ID/Setting Channel etc). But the manufacturer has not specified any hex string/command to obtain the RSSI values.

    I looked at the Z-stack 3.0 and as both of you suggested a C function is there which has defined the RSSI/LQI in AF. Now, I need to know how can I call this function or access the values. I'm aware of using the SmartRF Studio and obtaining the value but I do not have a CC debugger or a SmartRF development board with me right now. The modules I got come with Coordinator and Router firmware pre programmed and I expect it to have some version of Z-Stack running. Is there any way that I can use to access these RSSI values without going for a cc debugger? Can I use an arduino or Raspberry Pi? Or is it possible to do this with Z-tool?

    Thank you

    Sehan

  • 0 in reply to Sehan Samarakoon
    TI__Guru**** 210987 points

    Hi Sehan,

    If you are using a serial interface with hex string commands then it is possible that you are already using the Monitor and Test Interface in which case you should be investigating use of the ZDO_MGMT_LQI_REQ command like I was leading Tessa through on the previously linked thread.  Otherwise you only have the commands available from the third party module and pre-programmed software, of which we cannot provide any further assistance.

    Regards,
    Ryan