![]() ![]() 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).
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