Single wire wheel encoders

Dose any one know if single-line encoder (non quadrature) is supported? I use a set of motors for skid steering today and they have a encoder with only one signal cable. When I read the instructions it’s pointing to WENC_PINA and WENC_PINB but I only have one pin that is connected to “AUX OUT 4” for one of the encoders. How do I configure single wire encoders? I’m currently running ArduRover V3.5.1.

Same problem here, I don’t think it’s supported in the code at all. I will probably hack it a bit, I also have single wire encoders that can get me speed, but I need to source the direction input from somewhere else in the ardupilot stack to modify the wheel encoder “quadrature” driver.