TARGET: Add support code for EXF722DUAL board.

Doc: Add the description for EXF722DUAL board.

Target: Remove the EXF722DUAL PID-Audio Feature.

Target: Remove the EXF722DUAL unused build code.

docs/boards/Board - EXF722DUAL.md

@@ -0,0 +1,28 @@
+### Hardware
+- MCU: STM32F722RET6
+- IMU1: ICM20689_A (SPI1)
+- IMU2: ICM20689_B (SPI1)
+- OSD: AT7456E (SPI2)
+- Barometer: BMP280 (SPI3)
+- Blackbox: Micron M25P16VP (SPI3)
+
+### Feature
+- High-performance and DSP with FPU, ARM Cortex-M7 MCU with 512 Kbytes Flash. 
+- DUAL gyro ICM20689_A and ICM20689_B, they can work together to show you better performance.
+- The 16M byte SPI flash for data logging
+- USB VCP and boot select button on board(for DFU)
+- Serial LED interface(LED_STRIP)
+- VBAT/CURR/RSSI sensors input
+- Suppose IRC Tramp/smart audio/FPV Camera Control/FPORT/telemetry
+- Supports SBus, Spektrum1024/2048, PPM. No external inverters required (built-in).
+- Supports I2C device extend(baro/compass/OLED etc)(socket)
+- Supports GPS (socket)
+
+### Photos
+![Top](images/EXF722DUAL-top.png)
+
+![Bottom](images/EXF722DUAL-bottom.png)
+
+### Manufacturer
+- EXUAV FPV
+- FaceBook: https://www.facebook.com/profile.php?id=100013651722728

src/main/target/EXF722DUAL/target.c

@@ -0,0 +1,45 @@
+/*
+ * This file is part of Cleanflight and Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software 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 and Betaflight are distributed in the hope that they
+ * 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/>.
+ */
+
+#include <stdint.h>
+
+#include "platform.h"
+#include "drivers/io.h"
+
+#include "drivers/timer.h"
+#include "drivers/timer_def.h"
+#include "drivers/dma.h"
+
+const timerHardware_t timerHardware[USABLE_TIMER_CHANNEL_COUNT] = {
+    DEF_TIM(TIM5,  CH1, PA0,  TIM_USE_CAMERA_CONTROL, 0, 0),
+
+    DEF_TIM(TIM9,  CH2, PA3,  TIM_USE_PPM ,   0, 0), // PPM
+
+    DEF_TIM(TIM8,  CH3, PC8,  TIM_USE_MOTOR,  0, 1), // ESC 1
+    DEF_TIM(TIM8,  CH1, PC6,  TIM_USE_MOTOR,  0, 0), // ESC 2
+    DEF_TIM(TIM8,  CH4, PC9,  TIM_USE_MOTOR,  0, 0), // ESC 3
+    DEF_TIM(TIM8,  CH2, PC7,  TIM_USE_MOTOR,  0, 1), // ESC 4
+    DEF_TIM(TIM4,  CH1, PB6,  TIM_USE_MOTOR,  0, 0), // ESC 5 
+    DEF_TIM(TIM4,  CH2, PB7,  TIM_USE_MOTOR,  0, 0), // ESC 6
+    DEF_TIM(TIM3,  CH4, PB1,  TIM_USE_MOTOR,  0, 0), // ESC 7
+    DEF_TIM(TIM3,  CH3, PB0,  TIM_USE_MOTOR,  0, 0), // ESC 8
+
+    DEF_TIM(TIM2,  CH2, PA1,  TIM_USE_LED,    0, 0), // LED Strip
+};

src/main/target/EXF722DUAL/target.h

@@ -0,0 +1,154 @@
+/*
+ * This file is part of Cleanflight and Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software 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 and Betaflight are distributed in the hope that they
+ * 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 "EX7P"
+
+#define USBD_PRODUCT_STRING     "EXF722DUAL"
+
+#define USE_DUAL_GYRO
+
+#define ENABLE_DSHOT_DMAR       true
+
+#define LED0_PIN                PC4
+
+#define USE_BEEPER
+#define BEEPER_PIN              PC15
+#define BEEPER_INVERTED
+
+#define USE_EXTI
+#define USE_GYRO_EXTI
+#define GYRO_1_EXTI_PIN         PA8
+#define GYRO_2_EXTI_PIN         PC13
+
+#define USE_MPU_DATA_READY_SIGNAL
+#define ENSURE_MPU_DATA_READY_IS_LOW
+
+#define GYRO_1_SPI_INSTANCE     SPI1
+#define GYRO_1_CS_PIN           PA15
+
+#define GYRO_2_SPI_INSTANCE     SPI1
+#define GYRO_2_CS_PIN           PC3
+
+#define USE_GYRO
+#define USE_GYRO_SPI_ICM20689
+
+#define USE_ACC
+#define USE_ACC_SPI_ICM20689
+
+#define GYRO_1_ALIGN        CW0_DEG
+#define ACC_1_ALIGN         CW0_DEG
+
+#define GYRO_2_ALIGN        CW90_DEG
+#define ACC_2_ALIGN         CW90_DEG
+
+#define GYRO_CONFIG_USE_GYRO_DEFAULT GYRO_CONFIG_USE_GYRO_BOTH
+
+#define USE_VCP
+#define USE_UART1
+#define USE_UART2
+#define USE_UART3
+#define USE_UART4
+#define USE_UART5
+#define SERIAL_PORT_COUNT       6
+
+#define UART1_TX_PIN            PA9
+#define UART1_RX_PIN            PA10
+
+#define UART2_TX_PIN            PA2
+#define UART2_RX_PIN            PA3
+
+#define UART3_TX_PIN            PB10
+#define UART3_RX_PIN            PB11
+
+#define UART4_TX_PIN            PC10
+#define UART4_RX_PIN            PC11
+
+#define UART5_TX_PIN            PC12
+#define UART5_RX_PIN            PD2
+
+#define USE_SPI
+
+#define USE_SPI_DEVICE_1 // 2 x MPU
+#define SPI1_NSS_PIN            PA15
+#define SPI1_SCK_PIN            PA5
+#define SPI1_MISO_PIN           PA6
+#define SPI1_MOSI_PIN           PA7
+
+#define USE_SPI_DEVICE_2 // MAX7456
+#define SPI2_NSS_PIN            PB12
+#define SPI2_SCK_PIN            PB13
+#define SPI2_MISO_PIN           PB14
+#define SPI2_MOSI_PIN           PB15
+
+#define USE_OSD
+#define USE_MAX7456
+#define MAX7456_SPI_INSTANCE    SPI2
+#define MAX7456_SPI_CS_PIN      SPI2_NSS_PIN
+
+#define USE_SPI_DEVICE_3 // FLASH
+#define SPI3_SCK_PIN            PB3
+#define SPI3_MISO_PIN           PB4
+#define SPI3_MOSI_PIN           PB5
+
+#define ENABLE_BLACKBOX_LOGGING_ON_SPIFLASH_BY_DEFAULT
+#define USE_FLASHFS
+#define USE_FLASH_M25P16
+#define FLASH_CS_PIN            PB9
+#define FLASH_SPI_INSTANCE      SPI3
+
+#define USE_BARO
+#define USE_BARO_BMP280
+#define USE_BARO_SPI_BMP280
+#define BMP280_CS_PIN           PB8
+#define BMP280_SPI_INSTANCE     SPI3
+#define DEFAULT_BARO_BMP280
+
+#define USE_ADC
+#define ADC_INSTANCE            ADC3
+#define ADC3_DMA_STREAM         DMA2_Stream0
+
+#define VBAT_ADC_PIN            PC1
+#define CURRENT_METER_ADC_PIN   PC2
+#define RSSI_ADC_PIN            PC0
+
+#define CURRENT_METER_SCALE_DEFAULT 100
+
+#define DEFAULT_VOLTAGE_METER_SOURCE VOLTAGE_METER_ADC
+#define DEFAULT_CURRENT_METER_SOURCE CURRENT_METER_ADC
+
+#define USE_TRANSPONDER
+
+#define ENABLE_BLACKBOX_LOGGING_ON_SPIFLASH_BY_DEFAULT
+#define DEFAULT_RX_FEATURE                  FEATURE_RX_SERIAL
+#define DEFAULT_FEATURES                    (FEATURE_TRANSPONDER | FEATURE_RSSI_ADC | FEATURE_TELEMETRY | FEATURE_OSD | FEATURE_LED_STRIP)
+
+#define SERIALRX_UART                       SERIAL_PORT_USART2
+#define SERIALRX_PROVIDER                   SERIALRX_SBUS
+#define USE_SERIAL_4WAY_BLHELI_INTERFACE
+
+#define TARGET_IO_PORTA         0xffff
+#define TARGET_IO_PORTB         0xffff
+#define TARGET_IO_PORTC         0xffff
+#define TARGET_IO_PORTD         (BIT(2))
+
+#define USABLE_TIMER_CHANNEL_COUNT 11
+#define USED_TIMERS  (TIM_N(2) | TIM_N(3) | TIM_N(4) | TIM_N(5) | TIM_N(8) | TIM_N(9))

src/main/target/EXF722DUAL/target.mk

@@ -0,0 +1,8 @@
+F7X2RE_TARGETS += $(TARGET)
+FEATURES    = VCP ONBOARDFLASH
+
+TARGET_SRC = \
+            drivers/compass/compass_fake.c \
+            drivers/accgyro/accgyro_spi_icm20689.c \
+            drivers/barometer/barometer_bmp280.c \
+            drivers/max7456.c