Julian Oes
41253af565
STM32H743-based FPV / racing flight controller from AEDROX. Brings up: - ICM-42688-P IMU on SPI2 - DPS310 baro on internal I2C2 - W25N NAND flash on SPI3 with littlefs at /fs/flash - MAX7456 analog OSD on SPI1 - 8 motor outputs (TIM1 + TIM8) all bidirectional-DShot capable - CAN1 - External I2C1 connector for compass / sensors - 6 UARTs (TEL1, GPS1, RC, TEL2, ESC telemetry, debug console on UART8), - Two user GPIOs on the M5-M8 connector, VTX power and camera-switch GPIOs, buzzer on PA7 (active-buzzer transistor low-side switch), battery V/I sensing via ADC1. Board ID 1198 shared with ArduPilot's AP_HW_AEDROXH7 entry. USB enumerates as 0x26ac:0x0054 with VENDORSTR "AEDROX". Signed-off-by: Julian Oes <julian@oes.ch>
5.7 KiB
AEDROX AEDROXH7
::: warning PX4 does not manufacture this (or any) autopilot. Contact the manufacturer for hardware support. :::
::: info This flight controller is manufacturer supported. :::
The AEDROXH7 is an STM32H743-based FPV / racing flight controller from AEDROX.
Purchase from aedrox.com.
For full hardware documentation and pinouts, see the manufacturer documentation.
Key Features
- MCU: STM32H743VIM6 32-bit processor running at 480 MHz
- IMU: ICM-42688-P
- Barometer: DPS310 (some revisions ship DPS368, supported by the same driver)
- 128 MB W25N NAND flash for logging (mounted as littlefs at
/fs/flash) - MAX7456 analog OSD
- 6 UARTs (TEL1, GPS1, RC, TEL2, ESC telemetry, DJI/MSP HD OSD / debug console)
- 1 internal I2C bus (barometer), 1 external I2C bus (user connector)
- 1 CAN bus (CAN1) with silent-pin control
- 8 PWM motor outputs (Bidirectional DShot capable)
- 1 addressable LED strip pad, 2 general GPIO
- Battery voltage and current monitoring
- USB Type-C
No on-board magnetometer; PX4 runs with SYS_HAS_MAG=0 and EKF2 gravity fusion enabled by default.
Connectors and Pins
UARTs
| Port | MCU peripheral | Device | Function |
|---|---|---|---|
| SERIAL1 | USART1 | /dev/ttyS0 | TEL1 (MAVLink) |
| SERIAL2 | USART2 | /dev/ttyS1 | GPS1 |
| SERIAL3 | USART3 | /dev/ttyS2 | RC input |
| SERIAL4 | UART4 | /dev/ttyS3 | TEL2 |
| SERIAL7 | UART7 | /dev/ttyS4 | ESC telemetry (RX only) |
| SERIAL8 | UART8 | /dev/ttyS5 | Debug shell (system console) |
SERIAL7 is wired RX-only by the vendor (intended for ESC telemetry).
SERIAL8 is the system console at 57600 8N1 (device: /dev/ttyS5).
::: note
The vendor brings SERIAL8 out on the HD VTX connector (intended for DJI / MSP DisplayPort), but the default PX4 config uses it as the system console. To use it for MSP DisplayPort instead, move the console off UART8, then start the msp_osd driver on /dev/ttyS5.
:::
Motor / Servo Outputs
8 PWM motor outputs (M1-M8), all DShot and bidirectional-DShot (RPM telemetry) capable.
The M5-M8 motor connector additionally exposes two user-controllable GPIOs (GPIO1 / GPIO2, on PA2 / PA3) alongside the motor signals. Toggle them at runtime with the gpio command (see "User GPIOs" below).
A separate addressable-LED-strip pad is brought out; currently driven as a plain GPIO in this port .
Status LEDs
| Silkscreen | MCU pin | Color | Function |
|---|---|---|---|
| LED1 | PE2 | Blue | MCU activity, solid when armed |
| LED2 | - | Green | IMU power-supply indicator |
| LED3 | - | Green | MCU / baro / OSD power-supply indicator |
| LED4 | PE5 | Green | MCU activity, blinks based on flight state (preflight / disarmed / failsafe) |
| LED5 | - | - | 10v VTX rail indicator (lit when VTX power is enabled) |
Other I/O
| Function | MCU pin | Notes |
|---|---|---|
| Buzzer | PA7 | Drives an NPN low-side switch, use a basic 2-pin active buzzer (e.g. TMB12A05) |
| VTX power | PB1 | Active high |
| Camera switch | PD15 | Active high, currently hard-coded to camera 1 at boot (no runtime control yet); use gpio write D15 1 from nsh to switch to camera 2 |
| PINIO 1 / 2 | PA2 / PA3 | User-controllable GPIOs via gpio command |
| CAN1 silent | PD12 | Driven low to enable CAN bus |
| Battery V sense | PC0 | ADC1 IN10, calibrate BAT1_V_DIV per build |
| Battery I sense | PC1 | ADC1 IN11, calibrate BAT1_A_PER_V per ESC, or use DShot telemetry for current (BAT1_SOURCE) |
| USB VBUS sense | PC15 | Non-standard pin for VBUS sense |
Analog OSD (MAX7456)
The MAX7456 driver is built in but disabled by default. To enable, set OSD_ATXXXX_CFG to 1 (NTSC) or 2 (PAL) and reboot. The atxxxx driver auto-starts and overlays PX4 status on top of the camera video.
PX4 Bootloader Update
Before PX4 firmware can be installed, the PX4 bootloader must be flashed. Download the aedrox_aedroxh7_bootloader.bin bootloader binary and follow the bootloader update from Betaflight / DFU flashing instructions.
Building Firmware
To build PX4 for this target:
make aedrox_aedroxh7_default
Installing PX4 Firmware
Firmware can be installed in any of the normal ways:
-
Build and upload the source:
make aedrox_aedroxh7_default upload -
Load the firmware using QGroundControl. You can use either pre-built firmware or your own custom firmware.
Flash Storage Troubleshooting
The AEDROXH7 uses a 128 MB NAND flash (W25N) with a littlefs filesystem for logging. If the flash filesystem becomes corrupted, you can reformat it from the System Console:
mklittlefs /dev/mtd0 /fs/flash
This will erase all data on the flash and create a fresh littlefs filesystem. The filesystem is immediately available after the command completes.
System Console
UART8 is configured for use as the System Console at 57600 8N1.