Mirror/inav
1
0
Fork 0
mirror of https://github.com/iNavFlight/inav.git synced 2025-07-13 03:19:58 +03:00
Code Issues Wiki Activity
inav/docs/Broken USB recovery.md
Scavanger 39bd781552 USB-Rescue
2024-05-23 10:51:41 -03:00

3.5 KiB
Raw Permalink Blame History

Broken USB recovery

It is possible to flash INAV without USB over UART 1 or 3.

Prerequisites:

To gain access to the FC via Configurator, MSP must be activated on a UART as standard. Some FCs already have this enabled by default, if not a custom firmware must be created.

The following targets have MSP activated on a UART by default:

Target Standard MSP Port
AOCODARCF4V3 UART5
ATOMRCF405NAVI_DELUXE UART1
FF_F35_LIGHTNING UART1
FLYCOLORF7V2 UART4
GEPRCF405_BT_HD UART5*
GEPRCF722_BT_HD UART4*
IFLIGHT_BLITZ_F7_AIO UART1
JHEMCUF405WING UART6
JHEMCUH743HD UART4
KAKUTEH7 UART1 and UART2*
KAKUTEH7WING UART6
MAMBAF405_2022A UART4
MAMBAF405US UART4
MAMBAF722 UART4
MAMBAF722 APP UART4*
MAMBAF722WING UART4
MAMBAF722_X8 UART4
MAMBAH743 UART4*
MATEKF405SE UART1
NEUTRONRCH743BT UART3*
SDMODELH7V1 UART1 and UART2
SKYSTARSH743HD UART4
SPEEDYBEEF4 UART5*
SPEEDYBEEF405MINI UART4*
SPEEDYBEEF405V3 UART4*
SPEEDYBEEF405V4 UART4*
SPEEDYBEEF405WING UART6
SPEEDYBEEF7 UART6
SPRACINGF4EVO UART1
TMOTORF7V2 UART5

(*) No Pads/Pins, Port is used interally (Bluetooth)

Custom firmware:

If the FC does not have MSP activated on a UART by default or does not have a connector for it, a custom firmware must be built. The following procedure describes the process under Windows 10/11:

Please read Building in Windows 2010 or 11 with Linux Subsystem and follow the instructions up to "Building with Make".

In the step 'prepare build environment' add the option -DMSP_UART=SERIAL_PORT_USARTX to cmake

Replace the X in SERIAL_PORT_USARTX with the number of UART/serial port on which MSP is to be activated.

Example: For UART 2: cmake -DMSP_UART=SERIAL_PORT_USART2 .. For UART 3: cmake -DMSP_UART=SERIAL_PORT_USART3 .. etc.

Build the firmware as described in the document above (make [YOUR_TARGET]).

Flashing via Uart:

  1. Disconnect ALL peripherals and the USB Cable from the FC. To power the FC use a battery or use the 5V provided from the USB/Serial Converter.
  2. Connect UART 1 or 3 (other UARTS will not work) and GND to the USB/Serial converter (RX -> TX, TX -> RX)
  3. Keep the boot/dfu button pressed
  4. Switch on the FC / supply with power
  5. Start STM32 CubeProgrammer and go to "Erasing & Programming", second option in the menu.
  6. Select UART (blue dropdown field) and select the COM port of the USB/Serial adapter and press "Connect". The corresponding processor should now be displayed below.
  7. Click on "Full flash erase". This is also necessary if you are flashing the same firmware version that was previously on the FC, otherwise MSP may not be activated on the UART.
  8. Under "Download" load the previously created firmware (INAV_X.X.X_[Your Target].hex) or the standard firmware if UART is already activated there. The option "Verify programming" is optional but recommended. Make sure that "Skip flash erase while programming" is NOT activated.
  9. Click "Start Programming"

After the process is completed, switch the FC off and on again and then the Configurator can connect to the FC via USB/serial adapter and the previously configured UART.