SPRACINGH7NANO - First betaflight STM32H750 400Mhz 20x20 mount FC.

Website: http://seriouslypro.com/spracingh7nano
Shop: https://shop.seriouslypro.com/sp-racing-h7-nano

SPRACINGH7NANO - Add boards documentation and images.

SPRACINGH7NANO - Add unified target config.

Note: untested as no unified target exists for STM32H750+EXST yet.

SPRACINGH7NANO - Combine target files.

SPRACINGH7NANO - Update unified target config.

docs/boards/Board - SPRacingH7NANO.md

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+# Board - Seriously Pro SP Racing H7 NANO
+
+The SPRacingH7NANO flight controller features a 400Mhz H7 CPU that runs twice as fast as the previous generation F7 boards.
+A fast control-loop is what you need for perfect flight performance, the H7 at 400Mhz gives you all the processing power you need.
+
+The SPRacingH7NANO is features a 20x20 mounting pattern, has integrated 5V BEC and 128MB BlackBox logging and has support for
+external OSDs (e.g. via RunCam Camera or CrossFire/CRSF VTX's like the TBS Unify Evo OSD/VTX.)
+
+Full details available on the website, here:
+
+http://seriouslypro.com/spracingh7nano
+
+Purchasing boards directly from SeriouslyPro / SP Racing and official retailers helps fund software development.
+
+Shop here: https://shop.seriouslypro.com/sp-racing-h7-nano
+
+## Background
+
+The SPRacingH7NANO FC is the second STM32H750 based FC to ship with Betaflight.  Like the SPRacingH7EXTREME before it, it too uses
+the External Storage (EXST) build system which allows a bootloader to load the flight-controller firmware from external flash.
+
+See the EXST documentation for more details on the EXST system.
+
+## Hardware Features
+
+The SPRacingH7NANO is available in two versions, the NANO-S (solder-pads only) or NANO-E (with connectors for 4in1 ESC + RX + IO)
+
+### SPRacingH7NANO FC board.
+
+![SPRacingH7NANO CPU Side](images/spracingh7nano-cpu.jpg)
+![SPRacingH7NANO NANO-E and NANO-S](images/spracingh7nano-cpu-e-s.jpg)
+![SPRacingH7NANO NANO-S solder pads only](images/spracingh7nano-pcb-top.jpg)
+![SPRacingH7NANO NANO-E with connectors](images/spracingh7nano-pcb-top-with-connectors.jpg)
+
+* STM32H750 CPU, 400MHz inc FPU
+* 128MByte 1GBit NAND flash via QuadSPI
+* Low-noise ICM20602 accelerometer/gyro with dedicated filtering(connected via SPI)
+* 1.0mm thick 4-layer copper gold-plated PCB
+* 2-6S BEC 5V Switching regulator, 1A
+* TVS protection diode (NANO-E: Fitted, NANO-S: optional extra)
+* Transponder circuitry (LED and code available separately)
+* Buzzer circuitry
+* RSSI Analog input
+* 8 motor outputs (NANO-S: 8 on pads, NANO-E: 4 on 4in1 connector, 4 on pads)
+* 1x Dual SPI + GPIO breakout onto stacking connector (NANO-E only)
+* 6 Serial Ports (5x TX+RX + 1x TX only bi-directional)
+* 3 LEDs for 5V, 3V and STATUS (Green, Blue, Red)
+* 26.5x26.5mm PCB with 20mm mounting hole pattern
+* 4mm mounting holes for soft-mount grommets and M3 bolts
+* MicroUSB socket for configuration and ESC programming
+* Bootable from External flash.
+* Supplied with 4x soft-mount grommets.
+* Optionally supplied with 2x JST-SH 8-way IO cables. (NANO-E only)
+* Optionally supplied with 2x PicoBlade 6-way IO cables. (NANO-E only)
+
+* 1x solder pad for LED Strip
+* 2x solder pad for DAC out (NANO-S only)
+* 2x solder pad for ADC in (for 4in1 current sensor output, etc)
+* 2x solder pads for UART8 RX/TX
+* 2x solder pads for 5V/GND power
+* 2x solder pads for Buzzer
+* 2x solder pads for TVS Diode
+* 1x Row of pads for Motor 1-4 + Battery wires (NANO-S only)
+* 1x Row of pads for RX connections (UART1 RX+TX, RSSI, 5V, GND, IR) (NANO-S only)
+* 2x Rows of pads for additional IO (UART2,UART5,IR,LED-Strip,etc)
+* 2x 8pin JST-SH socket for GND/5V/I2C/UART4/UART5 (IO port, e.g. for external GPS module)
+* 2x 8pin JST-SH socket for GND/5V/SWD/UART3 (IO port, e.g. for debugging, etc)
+* 1x 6pin PicoBlade socket for RX (NANO-E only)
+* 1x 6pin PicoBlade socket for 4in1 ESC (NANO-E only)
+* 1x solder pads for BOOT
+* 1x solder pads for BIND
+* Cleanflight and Betaflight logos - they're on there, you just have to find them
+* SP Racing logo
+* 1x Additional easter egg!
+
+
+## Connection Diagrams
+
+Connection diagrams can be found on the website, here:
+
+http://seriouslypro.com/spracingh7nano#diagrams
+
+
+## Manual
+
+The manual can be downloaded from the website, here:
+
+http://seriouslypro.com/files/SPRacingH7NANO-Manual-latest.pdf
+

src/main/target/SPRACINGH7NANO/config.c

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+/*
+ * 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 <stdbool.h>
+#include <stdint.h>
+
+#include "platform.h"
+
+#ifdef USE_TARGET_CONFIG
+
+#include "config_helper.h"
+
+#include "io/serial.h"
+#include "osd/osd.h"
+#include "pg/pg.h"
+
+static targetSerialPortFunction_t targetSerialPortFunction[] = {
+    { SERIAL_PORT_USART1, FUNCTION_MSP },
+    { SERIAL_PORT_USART2, FUNCTION_MSP },
+};
+
+void targetConfiguration(void)
+{
+    osdConfigMutable()->core_temp_alarm = 85;
+    targetSerialPortFunctionConfig(targetSerialPortFunction, ARRAYLEN(targetSerialPortFunction));
+}
+#endif

src/main/target/SPRACINGH7NANO/target.c

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+/*
+ * 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/dma.h"
+#include "drivers/timer.h"
+#include "drivers/timer_def.h"
+
+const timerHardware_t timerHardware[USABLE_TIMER_CHANNEL_COUNT] = {
+    DEF_TIM(TIM1,  CH1, PA8,  TIM_USE_LED,                 0,  10,  0 ), // LED Strip
+    DEF_TIM(TIM2,  CH4, PB11, TIM_USE_TRANSPONDER,         0,  11,  0 ), // Transponder
+
+    DEF_TIM(TIM12, CH2, PB15, TIM_USE_PPM | TIM_USE_PWM,   0,  0,  0 ), // Also USART1 RX
+
+    DEF_TIM(TIM15, CH1, PE5,  TIM_USE_CAMERA_CONTROL,      0,  0,  0 ),
+    DEF_TIM(TIM15, CH2, PE6,  TIM_USE_NONE,                0,  0,  0 ),
+
+    DEF_TIM(TIM5,  CH1, PA0,  TIM_USE_MOTOR,               0,  0,  0 ), // M1
+    DEF_TIM(TIM5,  CH2, PA1,  TIM_USE_MOTOR,               0,  1,  0 ),
+    DEF_TIM(TIM5,  CH3, PA2,  TIM_USE_MOTOR,               0,  2,  0 ),
+    DEF_TIM(TIM5,  CH4, PA3,  TIM_USE_MOTOR,               0,  3,  0 ), // M4
+
+    DEF_TIM(TIM4,  CH1, PB6,  TIM_USE_MOTOR,               0,  4,  1 ), // M5
+    DEF_TIM(TIM4,  CH2, PB7,  TIM_USE_MOTOR,               0,  5,  1 ), // M6
+
+    DEF_TIM(TIM8,  CH1, PC6,  TIM_USE_MOTOR,               0,  6,  2 ), // M7
+    DEF_TIM(TIM8,  CH2, PC7,  TIM_USE_MOTOR,               0,  7,  2 ), // M8
+
+    DEF_TIM(TIM4,  CH3, PD14, TIM_USE_MOTOR,               0,  12,  0 ), // M9
+    DEF_TIM(TIM4,  CH4, PD15, TIM_USE_MOTOR,               0,  0,  0 ), // M10 // Note: No DMA on TIM4_CH4, can use with BURST DSHOT using TIM4_UP
+
+    DEF_TIM(TIM3,  CH1, PA6,  TIM_USE_NONE,                0,  0,  0 ), // Also TIM13/CH1
+    DEF_TIM(TIM3,  CH2, PA7,  TIM_USE_NONE,                0,  0,  0 ), // Also TIM14/CH1
+    DEF_TIM(TIM3,  CH3, PB0,  TIM_USE_NONE,                0,  0,  0 ), // Also TIM8/CH2_N
+    DEF_TIM(TIM3,  CH4, PB1,  TIM_USE_NONE,                0,  0,  0 ), // Also TIM8/CH3_N
+};
+
+
+