Added AIKONF4 (#5355)

* Added AIKONF4

* Replaced binary literals with explicit bit macros

* Removed invalid backdoor timers

* Added board description to docs folder

docs/boards/Board - AikonF4.md

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+# Aikon F4
+
+## Description
+FC with no PDB aimed at multi-rotor and fixed wing use, Aikon F4 features a carefully-chosen timer design which allowed to run 4-6 motors with burst DSHOT with maximum efficiency. On board are dedicated pads for ESC telemetry, VTX and camera control. Board also features an 11-pin connector for plug-and-play connection with Aikon AK32 4in1 ESC, providing voltage, current and ESC telemetry reading with no additional wires.
+
+## MCU, Sensors and Features
+
+### Hardware
+  - MCU: STM32F405
+  - IMU: MPU-6000 or ICM-20602 depending on revision
+  - Motor outputs: 4-6
+  - IMU Interrupt: Yes
+  - BARO: Optionally
+  - VCP: Yes
+  - Hardware UARTS: UART1 for SerialRX, UART3 for Inverted SmartPort, UART2 and UART4 available for general use
+  - Software serial: SOFTSERIAL1 for VTX control (shared with UART1TX), SOFTSERIAL2 for ESC telemetry (shared with UART4RX)
+  - OSD: Yes
+  - Blackbox: SPI 16MB or 32MB depending on revision
+  - PPM/LED_STRIP Shared: Yes
+  - Battery Voltage Sensor: Yes
+  - Integrated Voltage Regulator: Yes
+  - Buttons: Boot
+
+### Features
+Software serial is preconfigured by default, all you have to do is enable SOFTSERIAL1 for VTX control and SOFTSERIAL2 for ESC sensor on the Ports tab in Configurator.
+
+## Manufacturers and Distributors
+
+https://www.aikon-electronics.com/
+
+
+## Designers
+
+AIKON Electronics
+Avi Jang
+
+
+## Maintainers
+
+Andrey Mironov (@DieHertz)
+
+## FAQ & Known Issues
+* First revision has no diode protecting the 5V input on the 11-pin ESC connector, make sure to pull the 5V wire coming from our ESC in order to avoid two regulators fighting against each other
+* First revision has RX4 (ESC Telemetry) and GND pad silkscreen swapped near motor outputs
+![Aikon F4 top](aikon-f4-rev1-top.jpg)
+![Aikon F4 bottom](aikon-f4-rev1-bottom.jpg)

src/main/target/AIKONF4/target.c

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+/*
+ * This file is part of Cleanflight.
+ *
+ * Cleanflight is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Cleanflight is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdint.h>
+
+#include <platform.h>
+#include "drivers/io.h"
+
+#include "drivers/dma.h"
+#include "drivers/timer.h"
+#include "drivers/timer_def.h"
+
+const timerHardware_t timerHardware[USABLE_TIMER_CHANNEL_COUNT] = {
+    DEF_TIM(TIM2,  CH2,  PB3,  TIM_USE_ANY,                 0, 0), // CAMERA_CONTROL_PIN
+
+    // TIM8_UP (DMA2_ST1_CH7)
+    DEF_TIM(TIM8,  CH1,  PC6,  TIM_USE_MOTOR,               0, 0), // M1
+    DEF_TIM(TIM8,  CH2,  PC7,  TIM_USE_MOTOR,               0, 0), // M2
+    DEF_TIM(TIM8,  CH3,  PC8,  TIM_USE_MOTOR,               0, 0), // M3
+    DEF_TIM(TIM8,  CH4,  PC9,  TIM_USE_MOTOR,               0, 0), // M4
+    // TIM3_UP (DMA1_ST2_CH5)
+    DEF_TIM(TIM3,  CH3,  PB0,  TIM_USE_MOTOR,               0, 0), // M5
+    DEF_TIM(TIM3,  CH4,  PB1,  TIM_USE_MOTOR,               0, 0), // M6
+
+    // backdoor timers
+    DEF_TIM(TIM1,  CH2,  PA9,  TIM_USE_ANY,                 0, 0), // UART1_TX
+
+    DEF_TIM(TIM9,  CH1,  PA2,  TIM_USE_ANY,                 0, 0), // UART2_TX
+    DEF_TIM(TIM9,  CH2,  PA3,  TIM_USE_ANY,                 0, 0), // UART2_RX
+
+    DEF_TIM(TIM5,  CH1,  PA0,  TIM_USE_ANY,                 0, 0), // UART4_TX
+    DEF_TIM(TIM5,  CH2,  PA1,  TIM_USE_ANY,                 0, 0), // UART4_RX
+
+    DEF_TIM(TIM4,  CH1,  PB6,  TIM_USE_PPM | TIM_USE_LED,   0, 0), // LED & PPM (DMA1_ST0_CH2)
+};

src/main/target/AIKONF4/target.h

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+/*
+ * This is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define TARGET_BOARD_IDENTIFIER "AIK4"
+#define USBD_PRODUCT_STRING     "AIKONF4"
+
+#define LED0_PIN                PB4
+#define BEEPER                  PB5
+#define BEEPER_INVERTED
+
+#define ENABLE_DSHOT_DMAR       true
+
+#define INVERTER_PIN_UART1      PC0
+
+#define CAMERA_CONTROL_PIN      PB3
+
+#define USE_EXTI
+#define MPU_INT_EXTI            PC4
+#define USE_MPU_DATA_READY_SIGNAL
+
+#define MPU6000_CS_PIN          SPI1_NSS_PIN
+#define MPU6000_SPI_INSTANCE    SPI1
+#define USE_GYRO
+#define USE_GYRO_SPI_MPU6000
+#define USE_ACC
+#define USE_ACC_SPI_MPU6000
+#define GYRO_MPU6000_ALIGN      CW0_DEG
+#define ACC_MPU6000_ALIGN       CW0_DEG
+
+#define USE_GYRO_SPI_MPU6500
+#define USE_ACC_SPI_MPU6500
+#define MPU6500_CS_PIN          MPU6000_CS_PIN
+#define MPU6500_SPI_INSTANCE    MPU6000_SPI_INSTANCE
+#define GYRO_MPU6500_ALIGN      GYRO_MPU6000_ALIGN
+#define ACC_MPU6500_ALIGN       ACC_MPU6000_ALIGN
+
+#define USE_BARO
+#define USE_BARO_BMP280
+
+#define USE_OSD
+#define USE_MAX7456
+#define MAX7456_SPI_INSTANCE    SPI3
+#define MAX7456_SPI_CS_PIN      SPI3_NSS_PIN
+#define MAX7456_SPI_CLK         (SPI_CLOCK_STANDARD)
+#define MAX7456_RESTORE_CLK     (SPI_CLOCK_FAST)
+
+#define ENABLE_BLACKBOX_LOGGING_ON_SPIFLASH_BY_DEFAULT
+#define USE_FLASHFS
+#define USE_FLASH_M25P16
+#define M25P16_CS_PIN           SPI2_NSS_PIN
+#define M25P16_SPI_INSTANCE     SPI2
+
+#define USE_VCP
+#define VBUS_SENSING_PIN        PD2
+
+#define USE_UART1
+#define UART1_RX_PIN            PA10
+#define UART1_AHB1_PERIPHERALS  RCC_AHB1Periph_DMA2
+
+#define USE_UART2
+#define UART2_RX_PIN            PA3
+#define UART2_TX_PIN            PA2
+
+#define USE_UART3
+#define UART3_RX_PIN            PB11
+#define UART3_TX_PIN            PB10
+
+#define USE_UART4
+#define UART4_TX_PIN            PA0
+
+#define USE_SOFTSERIAL1
+#define SOFTSERIAL1_TX_PIN      PA9
+
+#define USE_SOFTSERIAL2
+#define SOFTSERIAL2_RX_PIN      PA1
+
+#define SERIAL_PORT_COUNT       7 // VCP, USART1, USART3, USART4, USART6, SOFT_SERIAL1, SOFT_SERIAL2
+
+#define USE_ESCSERIAL
+#define ESCSERIAL_TIMER_TX_PIN  PB6  // (HARDARE=0,PPM)
+
+#define USE_SPI
+#define USE_SPI_DEVICE_1
+#define SPI1_NSS_PIN            PA4
+#define SPI1_SCK_PIN            PA5
+#define SPI1_MISO_PIN           PA6
+#define SPI1_MOSI_PIN           PA7
+
+#define USE_SPI_DEVICE_2
+#define SPI2_NSS_PIN            PB12
+#define SPI2_SCK_PIN            PB13
+#define SPI2_MISO_PIN           PB14
+#define SPI2_MOSI_PIN           PB15
+
+#define USE_SPI_DEVICE_3
+#define SPI3_NSS_PIN            PA15
+#define SPI3_SCK_PIN            PC10
+#define SPI3_MISO_PIN           PC11
+#define SPI3_MOSI_PIN           PC12
+
+#define USE_I2C
+#define USE_I2C_DEVICE_1
+#define I2C_DEVICE              (I2CDEV_1)
+#define I2C1_SCL                PB8
+#define I2C1_SDA                PB9
+
+#define USE_ADC
+#define CURRENT_METER_ADC_PIN   PC1
+#define VBAT_ADC_PIN            PC2
+#define RSSI_ADC_PIN            PC3
+#define DEFAULT_VOLTAGE_METER_SOURCE VOLTAGE_METER_ADC
+#define DEFAULT_CURRENT_METER_SOURCE CURRENT_METER_ADC
+
+#define SERIALRX_PROVIDER       SERIALRX_SBUS
+#define SERIALRX_UART           SERIAL_PORT_USART1
+
+#define DEFAULT_RX_FEATURE      FEATURE_RX_SERIAL
+#define DEFAULT_FEATURES        ( FEATURE_OSD | FEATURE_SOFTSERIAL )
+#define USE_SERIAL_4WAY_BLHELI_INTERFACE
+
+#define TARGET_IO_PORTA         ( BIT(15) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | BIT(7) | BIT(6) | BIT(5) | BIT(4) | BIT(3) | BIT(2) | BIT(1) | BIT(0) )
+#define TARGET_IO_PORTB         ( BIT(15) | BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) | BIT(8) | BIT(6) | BIT(5) | BIT(4) | BIT(3) | BIT(1) | BIT(0) )
+#define TARGET_IO_PORTC         ( BIT(12) | BIT(11) | BIT(10) | BIT(9) | BIT(8) | BIT(7) | BIT(6) | BIT(4) | BIT(3) | BIT(2) | BIT(1) | BIT(0) )
+#define TARGET_IO_PORTD         ( BIT(2) )
+
+#define USABLE_TIMER_CHANNEL_COUNT 16
+#define USED_TIMERS             ( TIM_N(1) | TIM_N(2) | TIM_N(3) | TIM_N(4) | TIM_N(5) | TIM_N(8) | TIM_N(9) )

src/main/target/AIKONF4/target.mk

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+F405_TARGETS   += $(TARGET)
+FEATURES       = VCP ONBOARDFLASH
+TARGET_SRC = \
+            drivers/accgyro/accgyro_mpu6500.c \
+            drivers/accgyro/accgyro_spi_mpu6000.c \
+            drivers/accgyro/accgyro_spi_mpu6500.c \
+            drivers/barometer/barometer_bmp280.c \
+            drivers/max7456.c