HAL_ChibiOS: added KakuteF7 docs

libraries/AP_HAL_ChibiOS/hwdef/KakuteF7/README.md

@@ -0,0 +1,87 @@
+# KakuteF7 AIO Flight Controller
+
+http://www.holybro.com/product/59
+
+The KakuteF7 AIO is a flight controller produced by [Holybro](http://www.holybro.com/product/59).
+
+## Features
+
+ - STM32F745 microcontroller
+ - ICM20689 IMU
+ - BMP280 barometer
+ - microSD card slot
+ - AT7456E OSD
+ - 6 UARTs
+ - 6 PWM outputs
+
+## Pinout
+
+![KakuteF7 Board](KakuteF7.jpg "KakuteF7")
+
+## UART Mapping
+
+ - SERIAL0 -> USB
+ - SERIAL1 -> UART3 (Telem1)
+ - SERIAL2 -> UART2 (Telem2)
+ - SERIAL3 -> UART1 (GPS)
+ - SERIAL4 -> UART4
+ - SERIAL5 -> UART7
+ - SERIAL6 -> UART6 (Transmit only, FrSky)
+ 
+## RC Input
+ 
+ RC input is configured on the R6 (UART6_RX) pin. It supports all RC protocols.
+ 
+## FrSky Telemetry
+ 
+FrSky Telemetry is supported using the T6 pin (UART6 transmit). You need to set the following parameters to enable support for FrSky S.PORT
+ 
+  - SERIAL6_PROTOCOL 10
+  - SERIAL6_OPTIONS 7
+  
+## OSD Support
+
+The KakuteF7 supports OSD using OSD_TYPE 1 (MAX7456 driver).
+
+## PWM Output
+
+The KakuteF7 supports up to 6 PWM outputs. The pads for motor output M1 to M6 on the above diagram are for the 6 outputs. All 6 outputs support DShot as well as all PWM types.
+
+The PWM is in 3 groups:
+
+ - PWM 1, 2 and 3 in group1
+ - PWM 4 and 5 in group2
+ - PWM 6 in group3
+
+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.
+
+## Battery Monitoring
+
+The board has a builting 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 13
+ - BATT_CURR_PIN 12
+ - BATT_VOLT_MULT 10.1
+ - BATT_AMP_PERVLT 17.0
+
+## Compass
+
+The KakuteF7 AIO does not have a builting compass, but you can attach an external compass using I2C on the SDA and SCL pads.
+
+## 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.
+