Using hardware detection procedure to initializa chip select

lines before initialization talk with all chips

src/main/target/RACEBASE/hardware_revision.c

@@ -0,0 +1,69 @@
+/*
+ * 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 <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "platform.h"
+
+#include "build_config.h"
+
+#include "drivers/system.h"
+#include "drivers/bus_spi.h"
+#include "drivers/sensor.h"
+#include "drivers/io.h"
+#include "drivers/gpio.h"
+#include "drivers/exti.h"
+#include "drivers/accgyro.h"
+#include "drivers/accgyro_mpu.h"
+#include "drivers/accgyro_mpu6500.h"
+
+#include "hardware_revision.h"
+
+uint8_t hardwareRevision = 1;
+
+void detectHardwareRevision(void)
+{
+    gpio_config_t gpio;
+
+    // GYRO CS as output
+    gpio.pin = GPIO_Pin_5;
+    gpio.mode = Mode_Out_PP;
+    gpio.speed = Speed_2MHz;
+    gpioInit(GPIOB, &gpio);
+    GPIO_SetBits(GPIOB,   GPIO_Pin_5);
+
+    gpio.pin = GPIO_Pin_7;
+    gpio.mode = Mode_Out_PP;
+    gpio.speed = Speed_2MHz;
+    gpioInit(GPIOA, &gpio);
+    GPIO_SetBits(GPIOA,   GPIO_Pin_7);
+
+    gpio.pin = GPIO_Pin_12;
+    gpio.mode = Mode_Out_PP;
+    gpio.speed = Speed_2MHz;
+    gpioInit(GPIOB, &gpio);
+    GPIO_SetBits(GPIOB,   GPIO_Pin_12);
+}
+
+
+void updateHardwareRevision(void)
+{
+
+}
+

src/main/target/RACEBASE/hardware_revision.h

@@ -0,0 +1,24 @@
+/*
+ * 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/>.
+ */
+#pragma once
+
+#include "drivers/exti.h"
+
+extern uint8_t hardwareRevision;
+
+void updateHardwareRevision(void);
+void detectHardwareRevision(void);

src/main/target/RACEBASE/target.h

@@ -18,6 +18,7 @@
 #pragma once
 
 #define TARGET_BOARD_IDENTIFIER "RBFC"
+#define USE_HARDWARE_REVISION_DETECTION
 #define TARGET_CONFIG
 
 #define LED0                    PB3
@@ -76,6 +77,9 @@
 #define USE_MAX7456
 #define MAX7456_SPI_INSTANCE    SPI2
 #define MAX7456_SPI_CS_PIN      PA7
+#define MAX7456_SPI_CLK         (SPI_CLOCK_STANDARD*2)
+#define MAX7456_RESTORE_CLK     (SPI_CLOCK_FAST)
+
 
 #define M25P16_CS_PIN           PB12
 #define M25P16_SPI_INSTANCE     SPI2