An Open Source Frsky Telemetry Script for the Horus X10,X12 and Taranis X9D,X9E and QX7 radios

[yaapu (Alex Apostoli)]

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Cube Orange UART Inversion & Half Duplex Problems

I’m under the impression that the half-duplex and inverting support of the H7 in the Cube Orange should allow for a straight connection to FrSky SPort on a receiver (in this case an R-XSR). However, I’ve been having some issues. Without half-duplex set in SERIALx_OPTIONS, the line behaves correctly; when the receiver releases the line, it stays at 0V. However, with the half-duplex bit set, when the line is released it gets pulled to 3.3V. When connected to the receiver, this means the line ends…