FrSky FPort protocol

BF WIKI:  https://github.com/betaflight/betaflight/wiki/The-FrSky-FPort-Protocol

• Make sure the receiver is flashed with FPort firmware. check out receiver firmware version in Frsky website.
• F7 series(F722, F745, F765) & H7 series support SmartPort signal straight from receiver telemetry pin.
• F405 & F411 series(STD, CTR, WING, mini) need non-inverted smartport signal.
• Link UNINVERTED SMART PORT ON FRSKY RECEIVERS

	BetaFlight		INAV
	F722/F765/H743	F405 & F411 series	F722/F765/H743	F405 & F411 series
SmartPort	non-hacked	non-inverted (hacked)	non-hacked	non-inverted (hacked)
FC	Any Uart_TX	Any Uart_TX	Any Uart_TX	Any Uart_TX
CLI command	set serialrx_provider = FPORT set serialrx_inverted = ON set serialrx_halfduplex = ON	set serialrx_provider = FPORT set serialrx_inverted = OFF set serialrx_halfduplex = ON	set serialrx_provider = FPORT set serialrx_inverted = ON set serialrx_halfduplex = ON	set serialrx_provider = FPORT set serialrx_inverted = OFF set serialrx_halfduplex = ON

Frsky-R9 Slim & INAV

• RX1 of R9 Slim  —> any unused Uart_TX of F405/F411
• set serialrx_provider = FPORT
• set serialrx_inverted = OFF
• set serialrx_halfduplex = ON

Frsky-R9mm & INAV

• R9MM “Inverted S.Port”  —> any unused Uart_TX of F405/F411
• set serialrx_provider = FPORT
• set serialrx_inverted = OFF
• set serialrx_halfduplex = ON

ArduPilot FPort support

check out the details here  https://discuss.ardupilot.org/t/frsky-fport-support-testers-wanted/50669/1

***Telemetry:

FPort sensors have different ID,  Need to delete all sensors from transmitter, then rediscover the sensors.