get serial
serialrx_provider = SBUS
Allowed values: NONE, SPEK2048, SBUS, SUMD, SUMH, XB-B, XB-B-RJ01, IBUS, JETIEXBUS, CRSF, SRXL, CUSTOM, FPORT, SRXL2, GHST, SPEK1024
serialrx_inverted = OFF
Allowed values: OFF, ON
serialrx_halfduplex = OFF
Allowed values: OFF, ON
serial_update_rate_hz = 100
Allowed range: 100 - 2000
vtx_softserial_alt = OFF
Allowed values: OFF, ON
serialmsp_halfduplex = OFF
Allowed values: OFF, ON
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