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[FAQ] IWR6843AOPEVM WITH A ON-BOARD HEAT SINK UNFITS MMWAVEICBOOST

Prodigy 125 points

Replies: 15

Views: 394

Part Number: IWR6843AOPEVM

Hi TI Sensors Support Team,

I bought and received a  IWR6843AOPEVM made by Mistral recently. This board with a on-board heat sink looks different from pictures on TI website. I found it unfits  MMWAVEICBOOST and the J2 of  IWR6843AOPEVM (a yellow rectangular area in Fig. 1) cannot be dropped in J4 of MMWAVEICBOOST due to the heat sink against J17 on  MMWAVEICBOOST (a red circle area in Fig. 1 and a red rectangular area in Fig. 2 ).   Per my observation, the  displacement of the heat sink results from an uneven PCB edge (a green oval area in Fig 3). Who can I contact to resolve this issue? Thanks

Fig. 1

 

Fig. 2

 

 

 

 

Fig. 3

 

CHIEN-CHUNG YU

  • Hello,

    Does it fit without the heat sink? if yes, then you can operate the board without it.

    Although it is recommended, the Heat sink is not a mandatory requirement for the EVM use.  Due to the smaller size of the IWR6843AOPEVM it is likely to get warmer than other larger sized EVMs on the mmWave Radar portfolio, therefore care needs to be taken to ensure the junction temperature does not exceed 105 deg C.  

    The plot below shows measurement of junction temperature vs duty cycle taken with and without the heat sink. As seen in the plot the EVM can safely operate up to 50% duty cycle. 

    When using the EVM for custom applications the duty cycle can be adjusted as needed, heat sink provided with the kit can be used, customer can also design their own heat sink.

     Regards,

    Charles O

     

  •  
    Hi Charles
     
    Thanks for providing info regarding the heat sink issue. I removed it carefully then dropped in the EVM on the carrier board without any issue.
    ,
    I would like to ask you help check my procedures and setup shown below for flashing a bin file into the Start kit because of image flashing failed. Did I do anything wrong? Thanks
     
    James

  • In reply to JAMES YU:

    Hi,

    The setup looks good.

    Please ensure you hit reset after setting the SOP pin and also confirm that there are not other applications connected to the COM ports.

    Regards,

    Charles O

     

  • Hi Charles,

    I hit reset SW2 after setting the SOP pin and  there are not other applications connected to the COM ports. The image flashing still failed. Even I tried in the different computer, it showed failure.  Is it possible the EVM is out of order? If true, what can I do? So far, I haven't made any progress since I received the Start kit. Please provide your suggestions. Thank you

    James 
      

  • In reply to JAMES YU:

    James,

    Can you try flashing the EVM in standalone mode?

    Section 4.5 of the user's guide has more details on this.

    Regards,

    Charles O

     

  • Hi,

    I'm using IWR6843AOPEVM on standalone mode. I can't get it to program.  Please help read the log message shown below. Thanks

    2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Initialization complete.
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Flashing process starting...
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Connecting to COM Port COM8...
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Reset connection to device
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Set break signal
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Connection to COM port succeeded. Flashing can proceed.
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Reading device version info...
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: ** 1 files specified for flashing.
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Checking file C:/ti/mmwave_sdk_03_02_00_06_AOP/firmware/radarss/iwr6xxx_radarss_rprc.bin for correct header for IWR6843AOP.
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Header of C:/ti/mmwave_sdk_03_02_00_06_AOP/firmware/radarss/iwr6xxx_radarss_rprc.bin file indicates it is not a valid file to flash to IWR6843AOP: 0x43525052
    [2019/10/1 上午10:23:55] [ERROR] Cortex_R4_0: !!! Aborting flashing of specified files!!!
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Disconnecting from device on COM port COM8...
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Flashing instance clean-up initiated...
    [2019/10/1 上午10:23:55] [INFO] Cortex_R4_0: Instance deinitialized!

  • In reply to JAMES YU:

    Hi,

    It appears you are attempting to flash the wrong binary to the device.

    please follow the instructions on the link below

    http://dev.ti.com/tirex/explore/node?node=AIHy77joqu3jXFmjqwkBKQ__VLyFKFf__LATEST

    Regards,

    Charles O

     

  • Hi Charles,

    Yes, I can program the EVM in both standalone and  MMWEICBOOT modes after you pointed out the incorrect bin file used in my programming. Thank you 

    The bin file shown below was used for programming. Then, I ran mmWave Demo Visualizer (IWR6843AOP) App. for testing the EVM. 
    The data port can't be connected. Please advise what the reason is for this issue. 

    Thanks again


    image.png

    USB connected with PC.

    image.png

    mmWave Demo Visualizer (IWR6843AOP) App. was applied for testing the IWR6843AOPEVM + MMWAVEICBOOT.


      Serial port configured as the attached picture.  

    image.png

    Data_Port can't be connected.

    image.png

  • In reply to JAMES YU:

    is it failing when you send the config?

     

  • In reply to Charles Oladimeji:

    There was no response even though I clicked "SEND CONFIG TO MMWAVE DEVICE". "COM5:115200, COM6:921600 connecting to 2 of targets" was shown and the red bar line kept running.