Page Comparison

...

• Need to keep functions generic for GPIOs

• What is providing the RSSI signal? What is the form of the data (Need to ask Aidan Bowers)

• Related hardware: An RC Link

  • RFD900.

    • SiK Manual: https://files.rfdesign.com.au/Files/documents/Software manual.pdf

    • Datasheet: http://files.rfdesign.com.au/Files/documents/RFD900 DataSheet.pdf

    • RFD900x software: https://files.rfdesign.com.au/Files/documents/RFD900x Peer-to-peer V3.X User Manual V1.3.pdf

    • RFD900x hardware: http://files.rfdesign.com.au/Files/documents/RFD900 DataSheet.pdf

    • Need to see how RFD900 sends RSSI signals and how it interfaces with the actual flight controller. Then can determine what signal needs to be "decoded"

• Will the PPM driver be what calls the RSSI module?

  • (2021 year was PWM, this year 2022 will need to look into RFD900)

• We are no longer using singleton, need to get rid of that

...

• According to SiK Manual, RFD900 has:

  • TX pin that is UART

    • which protocol?

  • GPIOs

    • Digital

    • ADC

    • PWM capable

• “Mavlink radio status reporting”, including local RSSI and remote RSSI

  • https://mavlink.io/en/messages/common.html

  • https://mavlink.io/en/

  • So the RFD900 can use Mavlink serial protocol for RSSI reporting

• Can be configured by AT commands (use RT commands for remote modem):

  • you can send AT commands to get RSSI report

  • If the report goes to CLI, would calling the AT commands in a shell script and reading the rssi from there be a viable solution?

• Accoring to https://robokits.co.in/multirotor-spare-parts/fpv-video-telemetry-camera/rfd900-txmod-and-rfd-900x-modem-original

  • RFD900 uses PPM, but do we ever directly deal w/ the PPM, or does it get converted to a serial protocol first by the RFD900?

  • RFD900 carries RC PPM and Mavlink telemetry at the same time, so either or can be chosen

    • Can RSSI come through the RC PPM?

Ardupilot implementation reference

...