Serial port configuration is best done via the configurator.Ĭonfigure serial ports first, then enable/disable features that use the ports. USB To TTL / COM Converter Module buildin-in CP2102īoth SoftSerial and UART ports can be connected to your computer via USB to UART converter boards.FT232RL FTDI USB To TTL Serial Converter Adapter.When selecting a USB to UART converter choose one that has DTR exposed as well as a selector for 3.3v and 5v since they are more useful. FTDI is just a common manufacturer of a chip (the FT232RL) used on USB to UART boards. These are sometimes referred to as FTDI boards. If the flight controller does not have an on-board USB to UART converter and doesn't support VCP then an external USB to UART board is required. UART ports are sometimes exposed via on-board USB to UART converters, such as the CP2102 as found on the Naze and Flip32 boards. SoftSerial is the least efficient and slowest, SoftSerial should only be used for low-bandwidth usages, such as telemetry transmission. UART is the most efficient in terms of CPU usage. SoftSerial - A pair of hardware transmit and receive pins with signal detection and generation done in software.UART - A pair of dedicated hardware transmit and receive pins with signal detection and generation done in hardware.USB Virtual Com Port (VCP) - USB pins on a USB port connected directly to the processor without requiringĪ dedicated USB to UART adapter.Not all functions can be used on all ports due to hardware pin mapping, conflicting features, hardware, and software

Cleanflight has enhanced serial port flexibility but configuration is slightly more complex as a result.Ĭleanflight has the concept of a function (MSP, GPS, Serial RX, etc) and a port (VCP, UARTx, SoftSerial x).

Cleanflight firmware flip32 delux