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TI Home » TI E2E Community » Support Forums » Low Power RF & Wireless Connectivity » Low Power RF Bluetooth® Low Energy & ANT Forum » Add sensor(s) into CC2540 mini_dk keyfob
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Add sensor(s) into CC2540 mini_dk keyfob

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Lance Chien
Posted by Lance Chien
on Mar 13 2012 12:16 PM
Prodigy10 points

hi,

I have CC2540 keyfob and USB dongle, and I need to add some sensors into the keyfob, where can I connect them? Can I connect sensor pins to DEBUG pins or TEST pins? 

Thanks,

Eye

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  • kazola
    Posted by kazola
    on Mar 13 2012 12:44 PM
    Verified Answer
    Verified by Lance Chien
    Guru10665 points

    TEST pins.

    P0_6 and P0_7 are easily accessible.

    The other pins of the keyfob are already occupied with accelerometer, buzzer, UART... and so on.



    Please click the     Verify Answer     button on a post if it answers your question! :)

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  • GammaPoint
    Posted by GammaPoint
    on May 29 2012 17:05 PM
    Prodigy215 points

    Are these pins for the I2C bus?

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  • kazola
    Posted by kazola
    on May 31 2012 09:58 AM
    Guru10665 points

    Why do not you get a cc2541? They have I2C :)



    Please click the     Verify Answer     button on a post if it answers your question! :)

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  • GammaPoint
    Posted by GammaPoint
    on Jun 02 2012 21:06 PM
    Prodigy215 points

    We are trying to create a prototype with the CC2540 Key Fob for a demo --> need to have a cool look for the wow factor.

    I couldn't find CC2541 Key Fob. Not sure when the CC2541DK-SENSOR development kit will be available & if it would have a cool looking Key Fob. 

    So what kind of sensors can be attached to the CC2540 Key Fob? Which bus I should look for?

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  • john anderson104399
    Posted by john anderson104399
    on Jun 08 2012 07:56 AM
    Prodigy230 points

    I'd like to know the same thing.  Did you get an answer yet?  Could you post it please?  Could someone point me to a step-by-step example for beginners of how to connect an external sensor to the CC2540DK?

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  • Abhijeet Mulay
    Posted by Abhijeet Mulay
    on Jun 08 2012 22:49 PM
    Prodigy100 points

    Is it not possible to interface a sensor/ADC using port 0/1 pins (2,3,4,5). I have been able to get the SCK/MOSI/MISO signals on these pins as required. But, my device disconnects immediately after initialization. Is it that the ports are hardwired and hence cannot be used externally?

    Regards

    Abhijeet

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