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CC2340R5: CC2340R5

Part Number: CC2340R5

I am using CC2340R5 in my design. 2 IC's will used in different boards (1. as transmitter and 2. as receiver). We want positioning feature in that (AOA, AOD).

I read in a article that for AOA enabling, required 2 antennas with phase angle placement. Do we need to place 2 antenna per board (2 for transmitter and 2 for receiver) or something else ? Kindly clear

  • Hi Munesh,

    for AOA or AOD you need two antennas at the receiver but just one Antenna at the transmitting site.

    For more information, you can have a look into this:  https://www.bluetooth.com/blog/new-aoa-aod-bluetooth-capabilities/

    Regards,

    Alex

  • I am little bit confused in AOA and AOD, suppose my vehicle is in parking stand, in that a BLE beacon is there. I need to check my vehicle position by mobile/FOB key (mobile paired with FOB key).As per my understanding when receiver (vehicle) location is fixed and my mobile/FOB is moving object so it's called AOA and 2 antenna's will be placed at vehicle_beacon, so it will work as a GPS in mobile where I can see my destination and I am moving towards it, Please confirm.

    and when my vehicle is moving and my mobile/key is at fixed location then antenna array will placed at mobile/FOB key side, called AOD features, Please confirm.

  • Hi Munesh,

    1.) Mobile phones usually do not support AOA

    2.) The device performing AOA usually requires compute power. Thus it is quite unusual to do it in a keyfob.

    In Cars AoA is usually used to detect from which direction you are arriving at the car.

    If you have enough compute power on both devices and urgently have to do both, this might be possible. However it is not an application we see here regulary.

    Regards,

    Alex

  • So mobile phone does not supported AOA and we don't have much power source in FOB key. and if we have to find vehicle location in parking stand then how we can proceed. Please explain in brief

  • Hi,

    As Paul has mentioned, you need computation power to be the locator. You need device to do the calculation. If you don't have intention to add a device to do that, then unfortunately, there isn't any way to do it.

  • How much power will be compute during searching (location as a locator) and what is the process to see that location over handset (mobile). Mobile/fob key as a locator and vehicle as receiver. 

  • One more time I am explaining my query,

    Assuming, Gateway and Mobile handset are work as a transmitter and asset (as a receiver). Gateway paired with mobile handset and use to give command to asset and to take feedback from asset like sensor data/information, location etc.

     

    1. To see the asset location and distance/RSSI in mobile handset, which feature need to enable AOA or AOD ?
    2. To enable AOA feature, need to place antenna array at asset/receiver side or gateway/transmitter side ?
    3. We have size and power compute limitation at gateway side, then what would be the best solution ?
    4. Power computation to see location ?  
  • 1.) You can use both !!! I would recommend you to use multiple antennas in the vehicle. So it would be called AOA. But using this will have different trade offs. You will need a computation power on the receiving device. We do not support RTLS at CC2340 yet !!!

    2.) The antennas in both cases must to be installed at just one device. In one case the device with multiple antennas will be transmitting and in the other chase they will be receiving. The receiving device will always need computation power.

    3.) See 2.

    4.) We do not have experience with CC2340 on this. To get some experience with this, I would recommend you to get one of our Launchpads who support RTLS for example CC2x2R1Launchxl and try your application with our examples on  this. I think this would help you to get comfortable with the application your planning to run. 

  • Thanks for the clarification Alex.

    Is RTLS/IPS enabled by software ?

    Please clear your last massage "We do not support RTLS at CC2340 yet !!!". Is RTLS/IPS enabled by software ?

    By AOA/AOD and RSSI, we can determine direction of signal and distance. So by this we can estimate the location and navigate and if vehicle is moving then I can asses location updates on my mobile/Gateway. Kindly clear. 

  • Hi Munesh,

    We do not have any RTLS/IPS software published for CC2340 ye. 

    Regards, 

    Alex

  • Hi,

    we are using CC2340R as a MCU and TCAN4450 (TI) IC for CAN communication. In CAN datasheet, a clock-out pin shows for CAN clock. 

    1. How can we use internal 48Mhz crystal oscillator for CAN clock ?

    2. Can we use any GPIO to provide clock-out (20Mhz/40Mhz)

    3. What are the other possibilities ? 

    Thanks

    Munesh Tripathi

  • Hi Munseh, 

    as this does not have anything to do with the previous question,

    can you please open a new thread so we can assign it to our CAN and Hardware experts. 

    Regards,
    Alex