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# KakuteF4-Wing Flight Controller | ||
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The KakuteF4-Wing is a flight controller produced by [Holybro](http://www.holybro.com/). | ||
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## Features | ||
Processor | ||
STM32F405 32-bit processor | ||
AT7456E OSD | ||
Sensors | ||
ICM42688 Acc/Gyro | ||
SLP06 barometer | ||
Power | ||
2S - 8S Lipo input voltage with voltage monitoring | ||
9V/12V, 1.5A BEC for powering Video Transmitter | ||
6V/7.2V, ?A BEC for servos | ||
3.3V, 1A BEC | ||
Interfaces | ||
7x PWM outputs DShot capable, 4 outputs BiDirDShot capable | ||
1x RC input | ||
5x UARTs/serial for GPS and other peripherals | ||
1x I2C ports for external compass, airspeed, etc. | ||
USB-C port | ||
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## Pinout | ||
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![KakuteF4-Wing Bottom](kakutef4-esc.png) | ||
![KakuteF4-Wing Top Underside](kakutef4-uart.png) | ||
![KakuteF4-Wing Top](kakutef4-uart2.png) | ||
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## UART Mapping | ||
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The UARTs are marked Rn and Tn in the above pinouts. The Rn pin is the | ||
receive pin for UARTn. The Tn pin is the transmit pin for UARTn. | ||
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- SERIAL0 -> USB | ||
- SERIAL1 -> UART1 (GPS) DMA-Enabled | ||
- SERIAL2 -> UART2 (Telem1) DMA Enabled | ||
- SERIAL3 -> UART3 (RX) DMA Enabled | ||
- SERIAL5 -> UART5 (User) | ||
- SERIAL6 -> USART6 (User) | ||
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## RC Input | ||
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RC input is configured on the R3 (UART3_RX) pin. It supports all serial RC | ||
protocols. | ||
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## OSD Support | ||
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The KakuteF4-Wing supports OSD using OSD_TYPE 1 (MAX7456 driver). | ||
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## PWM Output | ||
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The KakuteF4 supports up to 7 PWM outputs. All outputs support DShot. Outputs 1-4 support BiDirDshot. | ||
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The PWM is in 5 groups: | ||
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- PWM 1-2 in group1 | ||
- PWM 3-4 in group2 | ||
- PWM 5-6 in group3 | ||
- PWM 7 in group4 | ||
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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. | ||
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## Battery Monitoring | ||
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The board has a builting voltage and current sensor. The current | ||
sensor can read up to ?? Amps. The voltage sensor can handle up to 6S | ||
LiPo batteries. | ||
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The correct battery setting parameters are: | ||
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- BATT_MONITOR 4 | ||
- BATT_VOLT_PIN 10 | ||
- BATT_CURR_PIN 11 | ||
- BATT_VOLT_MULT 11 | ||
- BATT_AMP_PERVLT 40 | ||
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## Compass | ||
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The KakuteF4-Wing does not have a built-in compass, but you can attach an external compass using I2C on the SDA and SCL pads. | ||
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## Loading Firmware | ||
Firmware for these boards can be found at https://firmware.ardupilot.org in sub-folders labeled “KakuteF4-Wing”. | ||
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Initial firmware load can be done with DFU by plugging in USB with the | ||
boot button pressed. Then you should load the "KakuteF4-Wing_bl.hex" | ||
firmware, using your favourite DFU loading tool. | ||
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Subsequently, you can update firmware with Mission Planner. | ||
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# setup for LEDs on chan5 | ||
SERVO7_FUNCTION 120 | ||
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# hw definition file for processing by chibios_hwdef.py | ||
# for KAKUTEF4WING hardware. | ||
# thanks to betaflight for pin information | ||
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# MCU class and specific type | ||
MCU STM32F4xx STM32F405xx | ||
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# board ID for firmware load | ||
APJ_BOARD_ID AP_HW_Holybro-KakuteF4-Wing | ||
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# crystal frequency, setup to use external oscillator | ||
OSCILLATOR_HZ 8000000 | ||
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FLASH_SIZE_KB 1024 | ||
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# bootloader starts at zero offset | ||
FLASH_RESERVE_START_KB 0 | ||
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# the location where the bootloader will put the firmware | ||
FLASH_BOOTLOADER_LOAD_KB 48 | ||
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# order of UARTs (and USB) | ||
SERIAL_ORDER OTG1 | ||
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# PA10 IO-debug-console | ||
PA11 OTG_FS_DM OTG1 | ||
PA12 OTG_FS_DP OTG1 | ||
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PA13 JTMS-SWDIO SWD | ||
PA14 JTCK-SWCLK SWD | ||
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# default to all pins low to avoid ESD issues | ||
DEFAULTGPIO OUTPUT LOW PULLDOWN | ||
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# Chip select pins | ||
PC14 FLASH1_CS CS | ||
PC15 OSD1_CS CS | ||
PA4 GYRO1_CS CS | ||
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PA1 LED_BOOTLOADER OUTPUT LOW | ||
define HAL_LED_ON 0 |
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# hw definition file for processing by chibios_hwdef.py | ||
# for KAKUTEF4WING hardware. | ||
# thanks to betaflight for pin information | ||
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# MCU class and specific type | ||
MCU STM32F4xx STM32F405xx | ||
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# board ID for firmware load | ||
APJ_BOARD_ID AP_HW_Holybro-KakuteF4-Wing | ||
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# crystal frequency, setup to use external oscillator | ||
OSCILLATOR_HZ 8000000 | ||
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FLASH_SIZE_KB 1024 | ||
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# bootloader takes first sector | ||
FLASH_RESERVE_START_KB 48 | ||
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define HAL_STORAGE_SIZE 16384 | ||
define STORAGE_FLASH_PAGE 1 | ||
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define STM32_ST_USE_TIMER 9 | ||
define CH_CFG_ST_RESOLUTION 16 | ||
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# SPI devices | ||
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# SPI1 | ||
PA5 SPI1_SCK SPI1 | ||
PA6 SPI1_MISO SPI1 | ||
PA7 SPI1_MOSI SPI1 | ||
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# SPI2 | ||
PB13 SPI2_SCK SPI2 | ||
PC2 SPI2_MISO SPI2 | ||
PC3 SPI2_MOSI SPI2 | ||
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# SPI3 | ||
PB3 SPI3_SCK SPI3 | ||
PB4 SPI3_MISO SPI3 | ||
PB5 SPI3_MOSI SPI3 | ||
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# Chip select pins | ||
PC14 FLASH1_CS CS | ||
PC15 OSD1_CS CS | ||
PA4 GYRO1_CS CS | ||
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# SERIAL ports | ||
SERIAL_ORDER OTG1 USART1 USART2 USART3 EMPTY UART5 USART6 | ||
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PA11 OTG_FS_DM OTG1 | ||
PA12 OTG_FS_DP OTG1 | ||
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# This is the pin that senses USB being connected. It is an input pin | ||
# setup as OPENDRAIN. | ||
PA10 VBUS INPUT OPENDRAIN | ||
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# USART1 | ||
PB7 USART1_RX USART1 | ||
PB6 USART1_TX USART1 | ||
define DEFAULT_SERIAL1_PROTOCOL SerialProtocol_GPS | ||
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# USART2 | ||
PA2 USART2_TX USART2 | ||
PA3 USART2_RX USART2 NODMA | ||
define DEFAULT_SERIAL2_PROTOCOL SerialProtocol_MAVLink2 | ||
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# USART3 - RX | ||
PC10 USART3_TX USART3 | ||
PC11 USART3_RX USART3 | ||
define DEFAULT_SERIAL3_PROTOCOL SerialProtocol_RCIN | ||
# SBUS inversion control pin, active low | ||
PC13 USART3_RXINV OUTPUT HIGH GPIO(78) POL(0) | ||
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# UART5 | ||
PC12 UART5_TX UART5 NODMA | ||
PD2 UART5_RX UART5 NODMA | ||
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# USART6 | ||
PC6 USART6_TX USART6 NODMA | ||
PC7 USART6_RX USART6 NODMA | ||
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# I2C ports | ||
I2C_ORDER I2C2 | ||
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# I2C2 | ||
PB10 I2C2_SCL I2C2 | ||
PB11 I2C2_SDA I2C2 | ||
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# Servos | ||
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# ADC ports | ||
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# ADC1 | ||
PC0 BATT_VOLTAGE_SENS ADC1 SCALE(1) | ||
define HAL_BATT_VOLT_PIN 10 | ||
define HAL_BATT_VOLT_SCALE 11.0 | ||
PC1 BATT_CURRENT_SENS ADC1 SCALE(1) | ||
define HAL_BATT_CURR_PIN 11 | ||
define HAL_BATT_CURR_SCALE 40 | ||
define HAL_BATT_MONITOR_DEFAULT 4 | ||
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# MOTORS | ||
PA8 TIM1_CH1 TIM1 PWM(1) GPIO(50) # M1 | ||
PA9 TIM1_CH2 TIM1 PWM(2) GPIO(51) BIDIR # M2 | ||
PB0 TIM3_CH3 TIM3 PWM(3) GPIO(52) # M3 | ||
PB1 TIM3_CH4 TIM3 PWM(4) GPIO(53) BIDIR # M4 | ||
PC8 TIM8_CH3 TIM8 PWM(5) GPIO(54) # M5 | ||
PC9 TIM8_CH4 TIM8 PWM(6) GPIO(55) # M6 | ||
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# LEDs | ||
PA1 TIM5_CH2 TIM5 PWM(7) GPIO(56) # M7 | ||
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define AP_NOTIFY_GPIO_LED_1_ENABLED 1 | ||
PC5 LED_BLUE OUTPUT LOW GPIO(90) | ||
define AP_NOTIFY_GPIO_LED_1_PIN 90 | ||
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# GPIOs | ||
PB14 PINIO1 OUTPUT GPIO(81) LOW | ||
PB15 PINIO2 OUTPUT GPIO(82) LOW | ||
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# Dataflash setup | ||
SPIDEV dataflash SPI3 DEVID1 FLASH1_CS MODE3 104*MHZ 104*MHZ | ||
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define HAL_LOGGING_DATAFLASH_ENABLED 1 | ||
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# OSD setup | ||
SPIDEV osd SPI2 DEVID1 OSD1_CS MODE0 10*MHZ 10*MHZ | ||
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define OSD_ENABLED 1 | ||
define HAL_OSD_TYPE_DEFAULT 1 | ||
ROMFS_WILDCARD libraries/AP_OSD/fonts/font*.bin | ||
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# IMU setup | ||
SPIDEV imu1 SPI1 DEVID1 GYRO1_CS MODE3 1*MHZ 8*MHZ | ||
# one IMU | ||
IMU Invensensev3 SPI:imu1 ROTATION_PITCH_180_YAW_90 | ||
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DMA_PRIORITY I2C2* SPI3* | ||
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# Baro setup | ||
BARO SPL06 I2C:0:0x76 | ||
define AP_BARO_BACKEND_DEFAULT_ENABLED 0 | ||
define AP_BARO_SPL06_ENABLED 1 | ||
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# no built-in compass, but probe the i2c bus for all possible | ||
# external compass types | ||
define ALLOW_ARM_NO_COMPASS | ||
define HAL_PROBE_EXTERNAL_I2C_COMPASSES | ||
define HAL_I2C_INTERNAL_MASK 0 | ||
define HAL_COMPASS_AUTO_ROT_DEFAULT 2 | ||
define HAL_DEFAULT_INS_FAST_SAMPLE 1 | ||
define HAL_FRAME_TYPE_DEFAULT 12 | ||
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# minimal drivers to reduce flash usage | ||
include ../include/minimize_fpv_osd.inc |
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