- u -
- UART_RX_ENABLE : UART.h
- UART_TX_ENABLE : UART.h
- UART_TX_RX_ENABLE : UART.h
- UHF_KILL_TIMEOUT : net.h
- UHF_STATUS_IN_CHANNEL : AttitudeManager.h
- UNARMED : ProgramStatus.h
- UNKILL_PLANE : commands.h
- UP_MOTION_LIMIT : cameraManager.h
- UPDATE_WAYPOINT : commands.h
- UPLINK_CHECK_FREQUENCY : net.h
- UPPER_PWM : PWM.h
- USE_AND_OR : AutoRelay_v0_01.c
- USE_PPM : InputCapture.h