Firmwares for FC series

CLI “defaults” after reflashing. Firmwares can also be downloaded from BF/INAV configurator

Drivers & Github

Installing Betaflight/INAV

  • BF WIKI – DFU flashing under Windows 

  • INAV has same theory
  • If GPS or other devices are connected to UART1 or UART3 of F405/F722 chip and these devices are powered ON.  FC can’t enter DFU mode. It is related to DFU protocol used in the STM32 bootloader, not hardware and PC driver issue.
  • Always reset to default with defaults in CLI after reflashing,  “full chip erase” can not erase old data completely.

DFU Drivers

Zadig 2.3

  1. Connect the FC USB to the PC While holding the boot button in. (DO NOT power on FC via external 5V or Vbat)
  2. Open Zadig
  3. Choose Options > List All Devices
  4. Select STM32 BOOTLOADER in the device list (if instead you see STM32 Virtual Com Port you are not in DFU mode – don’t replace the driver!)
  5. Choose WinUSB (v6.x.x.x) in the box on the right side of the green arrow and click Replace Driver
  6. Unplug FC from the computer
  7. Restart BF/INAV configurator
  8. Connect the FC USB to the PC While holding the boot button in.
  9. BF/INAV configurator should show it’s connected in DFU mode in the top right corner
  10. Choose the latest hex file for your FC and then “Load Firmware Online/local”. Once loaded, click “Flash Firmware”.

ImpulseRC Driver Fixer

  1. Start ImpluseRC Driver Fixer
  2. Connect the FC USB to the PC While holding the boot button in. (DO NOT power on FC via external 5V or Vbat)
  3. The ImpulseRC Driver Fixer should then see and load the proper driver
  4. Start BF/INAV configurator
  5. Connect the FC USB to the PC while holding the boot button in.
  6. BF/INAV configurator should show it’s connected in DFU mode in the top right corner (DO NOT click the CONNECT button)
  7. Choose the latest hex file for your FC and then “Load Firmware Online/local”. Once loaded, click “Flash Firmware”.

STM32 COM Drivers

BetaFlight

INavFlight

ArduPilot

F405-CTR, F405-STD, F405-mini

BetaFlight Target MATEKF05

After flashing BF4.0, MUST set F405-STD & F405-mini first gyro to CW180 in configurator to follow the arrow forward

Keep default CW270 for F405-CTR if arrow forward

INAV Target MATEKF05

  • inav_1.9.1_MATEKF405  Fix overflow in currentSensorToCentiamps  (Softserial_TX1 is on TX4 pad if CPU based serial port is enabled)

Wiki INAV MATEKF405 family

INAV Target MATEKF405OSD for F405-OSD

The F405-OSD does not expose I2C. For iNav there is a software I2C provision using the USART3 pads, as:

  • SDA => RX3, SCL => TX3
  • Do not assign any serial function to USART3

ArduPilot (ChibiOS) Target MatekF405 for F405-CTR

ArduPilot (ChibiOS) Target MatekF405-STD for F405-STD

F405-WING

INAV Target MATEKF405SE

ArduPilot (ChibiOS) Target MatekF405-WING

F411-mini, F411-WING

BetaFlight Target MATEKF411

INAV Target MATEKF411

Target variant

MATEKF411_SFTSRL2

  • if you want to use two softserials (TX only) at the same time. Eg. VTX control + S. Port
  • softserial_tx1 on ST1 pad, softserial_tx2 on LED pad

MATEKF411_RSSI

  • if you want to have analog RSSI input on ST1 pad. softserial_tx1 will be available on the LED pad.
F411-ONE

BetaFlight Target MATEKF411RX

F722-STD

BetaFlight Target MATEKF722

INAV Target MATEKF722

F722-SE, F722-mini, F722-WING

BetaFlight Target MATEKF722SE

F722-SE and F722-mini share same target since BF3.5.5 & BF4.0 #1306

INAV Target MATEKF722SE for F722-SE & F722-WING

INAV Target MATEKF722MINI for F722-mini

INAV Target Tips

  • S5 doesn’t work for Hex/Octo motor due to normal DMA confliction if Dshot is selected
  • Use multishot for Hex/Octo copter
  • BF uses burst DMA, no confliction between S1 ~S8 Dshot

I2C bus speed selection

  • Some I2C sensors are reported to work unreliably on default 400kHz speed. INav allows to reduce I2C clock rate to 200kHz and 100kHz to allow these picky sensors to function properly.
  • If compass sensor is not recognized or hangs when setting, please try CLI command “set i2c_speed = 200KHZ”  before reporting a bug.
Tutorial

Acknowledgements