2022-09-24 12:15:54 -03:00
|
|
|
# Skystars H7 Flight Controller
|
|
|
|
|
|
|
|
|
|
The Skystars H7 is a flight controller produced by [Skystars](http://www.skystars-rc.com/).
|
|
|
|
|
|
|
|
|
|
## Features
|
|
|
|
|
|
|
|
|
|
- STM32H743 microcontroller
|
|
|
|
|
- BMI270 IMU x2
|
|
|
|
|
- BMP280 barometer
|
|
|
|
|
- AT7456E OSD
|
|
|
|
|
- 8 UARTs
|
|
|
|
|
- 9 PWM outputs
|
|
|
|
|
|
|
|
|
|
## Pinout
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## UART Mapping
|
|
|
|
|
|
|
|
|
|
The UARTs are marked RX and TX in the above pinouts. The RX pin is the
|
|
|
|
|
receive pin for UARTn. The TX pin is the transmit pin for UARTn.
|
|
|
|
|
|
|
|
|
|
- SERIAL0 -> USB
|
|
|
|
|
- SERIAL1 -> UART1 (RX, DMA-enabled)
|
|
|
|
|
- SERIAL2 -> UART2 (DMA-enabled)
|
|
|
|
|
- SERIAL3 -> UART3 (ESC Telem)
|
|
|
|
|
- SERIAL4 -> UART4 (GPS, DMA-enabled)
|
|
|
|
|
- SERIAL5 -> UART5 (VTX)
|
|
|
|
|
- SERIAL6 -> UART6 (DJI FPV, DMA-enabled)
|
|
|
|
|
- SERIAL7 -> UART7 (DMA-enabled)
|
|
|
|
|
- SERIAL8 -> UART8
|
|
|
|
|
|
|
|
|
|
## RC Input
|
|
|
|
|
|
2022-09-25 05:38:42 -03:00
|
|
|
RC input is configured on the R1 (UART1_RX) pin in the DJI connector or via the R1/T1 (UART1) pads.
|
|
|
|
|
It supports all serial RC protocols. For protocols requiring half-duplex serial to transmit
|
|
|
|
|
telemetry (such as FPort) you should setup SERIAL1 with half-duplex and connect to T1 or use
|
|
|
|
|
R1 with pin-swap. You also need to set inversion enabled if using FPort.
|
2022-09-24 12:15:54 -03:00
|
|
|
|
|
|
|
|
## OSD Support
|
|
|
|
|
|
|
|
|
|
The Skystars H7 supports OSD using OSD_TYPE 1 (MAX7456 driver).
|
|
|
|
|
|
|
|
|
|
## PWM Output
|
|
|
|
|
|
|
|
|
|
The Skystars H7 supports up to 9 PWM outputs. The pads for motor output
|
|
|
|
|
M1 to M8 on the two motor connectors, plus M9 for LED strip or another
|
|
|
|
|
PWM output.
|
|
|
|
|
|
|
|
|
|
The PWM is in 5 groups:
|
|
|
|
|
|
|
|
|
|
- PWM 1, 2 in group1
|
|
|
|
|
- PWM 3, 4 in group2
|
|
|
|
|
- PWM 5-8 in group3
|
|
|
|
|
- PWM 9 in group4
|
|
|
|
|
|
|
|
|
|
Channels within the same group need to use the same output rate. If
|
|
|
|
|
any channel in a group uses DShot then all channels in the group need
|
|
|
|
|
to use DShot. Outputs 1-8 support bi-directional dshot.
|
|
|
|
|
|
|
|
|
|
## Battery Monitoring
|
|
|
|
|
|
|
|
|
|
The board has a builtin voltage and current sensor. The current
|
|
|
|
|
sensor can read up to 130 Amps. The voltage sensor can handle up to 6S
|
|
|
|
|
LiPo batteries.
|
|
|
|
|
|
|
|
|
|
The correct battery setting parameters are:
|
|
|
|
|
|
|
|
|
|
- BATT_MONITOR 4
|
|
|
|
|
- BATT_VOLT_PIN 10
|
|
|
|
|
- BATT_CURR_PIN 11
|
|
|
|
|
- BATT_VOLT_MULT 10.1
|
|
|
|
|
- BATT_AMP_PERVLT 17.0
|
|
|
|
|
|
|
|
|
|
## Compass
|
|
|
|
|
|
|
|
|
|
The Skystars H7 does not have a builtin compass, but you can attach an external compass using I2C on the SDA and SCL pads.
|
2022-09-25 05:38:42 -03:00
|
|
|
|
2022-09-24 12:15:54 -03:00
|
|
|
## Loading Firmware
|
|
|
|
|
|
|
|
|
|
Initial firmware load can be done with DFU by plugging in USB with the
|
|
|
|
|
bootloader button pressed. Then you should load the "with_bl.hex"
|
|
|
|
|
firmware, using your favourite DFU loading tool.
|
|
|
|
|
|
|
|
|
|
Once the initial firmware is loaded you can update the firmware using
|
|
|
|
|
any ArduPilot ground station software. Updates should be done with the
|
|
|
|
|
*.apj firmware files.
|
