Add support for SDCard

src/main/target/FishDroneF4/target.h

@@ -92,6 +92,25 @@
 #define M25P16_CS_PIN           PD2
 #define M25P16_SPI_INSTANCE     SPI3
 
+// *************** SDCARD *****************************
+#define USE_SDCARD
+
+#define SDCARD_DETECT_INVERTED
+
+#define SDCARD_DETECT_PIN       PB7
+#define SDCARD_SPI_INSTANCE     SPI3
+#define SDCARD_SPI_CS_PIN       PB9
+
+// SPI2 is on the APB1 bus whose clock runs at 84MHz. Divide to under 400kHz for init:
+#define SDCARD_SPI_INITIALIZATION_CLOCK_DIVIDER 256 // 328kHz
+// Divide to under 25MHz for normal operation:
+#define SDCARD_SPI_FULL_SPEED_CLOCK_DIVIDER     4 	// 21MHz
+
+#define SDCARD_DMA_CHANNEL_TX               DMA1_Stream5
+#define SDCARD_DMA_CHANNEL_TX_COMPLETE_FLAG DMA_FLAG_TCIF5
+#define SDCARD_DMA_CLK                      RCC_AHB1Periph_DMA1
+#define SDCARD_DMA_CHANNEL                  DMA_Channel_0
+
 // *************** RTC6705 *************************
 #define USE_RTC6705
 #define RTC6705_SPILE_PIN       PB3

src/main/target/FishDroneF4/target.mk

@@ -1,5 +1,5 @@
 F405_TARGETS    += $(TARGET)
-FEATURES        += VCP ONBOARDFLASH
+FEATURES        += SDCARD VCP ONBOARDFLASH
 
 TARGET_SRC = \
             drivers/accgyro_spi_mpu6500.c \