Hitec protocol using the CC2500 RF component
Protocol number: 39
Sub protocols:
- Optima (0): the TX must be really close to the RX for the bind negociation to complete.
- Minima (1): untested
Optima supports basic telemetry using the FrSky Hub format: RX volt, TX RSSI,&LQI
- Change how PPM is handled with a resolution of 2048 and scaled to match serial input range. PPM is now fully scaled for all protocols which was not the case before. If you are using PPM, you might have to adjust the end points depending on the protocols.
- Change all range conversions to use 2048 where possible
- Updated all protocols with new range functions
- Protocols which are taking advantage of 2048 are Assan, FrSky V/D/X, DSM, Devo, WK2x01
- Renamed AUX xto CHx for code readbility
- rewritten the handling of the incoming over the air telemetry packet
- rewritten the TX_RSSI calculation (link frame[4])
- added RX LQI and TX_LQI information in the link frame (frame[5] and
frame[6])
This allows the multi module to tell the TX software (e.g. OpenTX) which telemetry protocol is in use. Also Status of the module and signaling binding/invalid protocol
Changed telemetry configuration and validation for AFHDS2A and HUBSAN
Added default Bayang telemetry from Silverxxx:
- Option=1 to activate telemetry (option=0 -> standard Bayang protocol)
- Value returned to the TX: RX RSSI, TX RSSI, A1=uncompensated battery
voltage, A2=compensated battery voltage
- Wait for transmit completion before switching to RX (no more fixed
delays...)
- Verify if data has been received before processing it (better handling
of telemetry)
- Added TX_RSSI (along with the existing RX_RSSI)
Known issue: RX_RSSI value needs to be looked at. I'm seeing only values
between 157 (bad) and 196 (good). Is this normal for this protocol?
