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CC8521 for non-audio payload too?

Robert Howard1
Prodigy 10 points

I have a wrist-worn application (Lightglove) and need to transmit audio and non-audio data. Can my transmitter nest digital payload if my receiver knows when to listen to differentiate it?  Also, can I access the USB port locally or only from the radio? Can I send non-audio HID packets through the USB or is it only for audio data? Thank you.

  • 0
    TI__Mastermind 21125 points

    Hi Robert, 

    Non-audio data can be embedded into the audio transmission in a couple of ways:
    - Data side channel. Requires host MCU on both sides of the link and that excludes USB. This is a bi-directional data link between nodes in a PurePath Wireless network.
    - Custom HID report. Requires host MCU on slave side and USB on master side. This is a one-directional way of transmitting data from slave to USB host. 

    For the HID report, please see the PurePath Wireless configurator help system and 'Human Interface Device Panel' and 'HID Report Definition Files'. You will also need to understand the RC_SET_DATA EHIF command on the slave side (which should correspond to the custom HID report). See User Guide appendix B for EHIF command set: 
    http://www.ti.com/lit/ug/swru250l/swru250l.pdf

    Regards, 

    Kjetil