CC3D - Adding USB Virtual COM port suport.

You can now connect the configurator via the USB port.

Makefile

@@ -53,13 +53,13 @@ LINKER_DIR	 = $(ROOT)/src/main/target
 
 # Search path for sources
 VPATH		:= $(SRC_DIR):$(SRC_DIR)/startup
+USBFS_DIR	= $(ROOT)/lib/main/STM32_USB-FS-Device_Driver
+USBPERIPH_SRC = $(notdir $(wildcard $(USBFS_DIR)/src/*.c))
 
 ifeq ($(TARGET),$(filter $(TARGET),STM32F3DISCOVERY CHEBUZZF3 NAZE32PRO SPRACINGF3 SPARKY))
 
 STDPERIPH_DIR	= $(ROOT)/lib/main/STM32F30x_StdPeriph_Driver
-USBFS_DIR	= $(ROOT)/lib/main/STM32_USB-FS-Device_Driver
 
-USBPERIPH_SRC = $(notdir $(wildcard $(USBFS_DIR)/src/*.c))
 STDPERIPH_SRC = $(notdir $(wildcard $(STDPERIPH_DIR)/src/*.c))
 
 EXCLUDES	= stm32f30x_crc.c \
@@ -155,14 +155,26 @@ INCLUDE_DIRS := $(INCLUDE_DIRS) \
 		   $(CMSIS_DIR)/CM3/CoreSupport \
 		   $(CMSIS_DIR)/CM3/DeviceSupport/ST/STM32F10x \
 
+DEVICE_STDPERIPH_SRC = $(STDPERIPH_SRC)
+
+ifeq ($(TARGET),CC3D)
+INCLUDE_DIRS := $(INCLUDE_DIRS) \
+		   $(USBFS_DIR)/inc \
+		   $(ROOT)/src/main/vcp
+
+VPATH := $(VPATH):$(USBFS_DIR)/src
+
+DEVICE_STDPERIPH_SRC := $(DEVICE_STDPERIPH_SRC) \
+		   $(USBPERIPH_SRC) 
+
+endif
+
 LD_SCRIPT	 = $(LINKER_DIR)/stm32_flash_f103_128k.ld
 
 ARCH_FLAGS	 = -mthumb -mcpu=cortex-m3
 TARGET_FLAGS = -D$(TARGET) -pedantic
 DEVICE_FLAGS = -DSTM32F10X_MD -DSTM32F10X
 
-DEVICE_STDPERIPH_SRC = $(STDPERIPH_SRC)
-
 endif
 
 TARGET_DIR = $(ROOT)/src/main/target/$(TARGET)
@@ -238,6 +250,16 @@ HIGHEND_SRC  = flight/autotune.c \
 		   sensors/barometer.c \
 		   blackbox/blackbox.c
 
+VCP_SRC	 = \
+		   vcp/hw_config.c \
+		   vcp/stm32_it.c \
+		   vcp/usb_desc.c \
+		   vcp/usb_endp.c \
+		   vcp/usb_istr.c \
+		   vcp/usb_prop.c \
+		   vcp/usb_pwr.c \
+		   drivers/serial_usb_vcp.c
+
 NAZE_SRC	 = startup_stm32f10x_md_gcc.S \
 		   drivers/accgyro_adxl345.c \
 		   drivers/accgyro_bma280.c \
@@ -403,7 +425,8 @@ CC3D_SRC	 = \
 		   drivers/timer.c \
 		   drivers/timer_stm32f10x.c \
 		   $(HIGHEND_SRC) \
-		   $(COMMON_SRC)
+		   $(COMMON_SRC) \
+		   $(VCP_SRC)
 
 STM32F30x_COMMON_SRC	 = \
 		   startup_stm32f30x_md_gcc.S \
@@ -425,16 +448,6 @@ STM32F30x_COMMON_SRC	 = \
 		   drivers/timer.c \
 		   drivers/timer_stm32f30x.c
 
-VCP_SRC	 = \
-		   vcp/hw_config.c \
-		   vcp/stm32_it.c \
-		   vcp/usb_desc.c \
-		   vcp/usb_endp.c \
-		   vcp/usb_istr.c \
-		   vcp/usb_prop.c \
-		   vcp/usb_pwr.c \
-		   drivers/serial_usb_vcp.c
-
 NAZE32PRO_SRC	 = \
 		   $(STM32F30x_COMMON_SRC) \
 		   $(HIGHEND_SRC) \

src/main/io/serial.c

@@ -106,12 +106,18 @@ const serialPortConstraint_t serialPortConstraints[SERIAL_PORT_COUNT] = {
 
 #ifdef CC3D
 static serialPortFunction_t serialPortFunctions[SERIAL_PORT_COUNT] = {
+#ifdef USE_VCP
+    {SERIAL_PORT_USB_VCP,     NULL, SCENARIO_UNUSED, FUNCTION_NONE},
+#endif
     {SERIAL_PORT_USART1,      NULL, SCENARIO_UNUSED, FUNCTION_NONE},
     {SERIAL_PORT_USART3,      NULL, SCENARIO_UNUSED, FUNCTION_NONE},
     {SERIAL_PORT_SOFTSERIAL1, NULL, SCENARIO_UNUSED, FUNCTION_NONE}
 };
 
 const serialPortConstraint_t serialPortConstraints[SERIAL_PORT_COUNT] = {
+#ifdef USE_VCP
+    {SERIAL_PORT_USB_VCP,       9600,   115200,   SPF_NONE },
+#endif
     {SERIAL_PORT_USART1,        9600, 115200,   SPF_NONE | SPF_SUPPORTS_SBUS_MODE | SPF_SUPPORTS_BIDIR_MODE},
     {SERIAL_PORT_USART3,        9600, 115200,   SPF_SUPPORTS_CALLBACK | SPF_SUPPORTS_SBUS_MODE | SPF_SUPPORTS_BIDIR_MODE},
     {SERIAL_PORT_SOFTSERIAL1,   9600, 19200,    SPF_SUPPORTS_CALLBACK | SPF_IS_SOFTWARE_INVERTABLE}

src/main/target/CC3D/target.h

@@ -60,10 +60,11 @@
 #define BEEPER
 #define DISPLAY
 
+#define USE_VCP
 #define USE_USART1
 #define USE_USART3
 #define USE_SOFTSERIAL1
-#define SERIAL_PORT_COUNT 3
+#define SERIAL_PORT_COUNT 4
 
 #define SOFTSERIAL_1_TIMER TIM3
 #define SOFTSERIAL_1_TIMER_TX_HARDWARE 1 // PWM 2

src/main/vcp/hw_config.c

@@ -123,6 +123,13 @@ void Set_System(void)
     GPIO_PinAFConfig(GPIOA, GPIO_PinSource12, GPIO_AF_14);
 
 #endif /* STM32F37X  && STM32F303xC)*/
+#if defined(STM32F10X)
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
+    GPIO_Init(GPIOA, &GPIO_InitStructure);
+#endif
 
     /* Configure the EXTI line 18 connected internally to the USB IP */
     EXTI_ClearITPendingBit(EXTI_Line18);

src/main/vcp/hw_config.h

@@ -32,7 +32,13 @@
 /* Includes ------------------------------------------------------------------*/
 //#include "platform_config.h"
 #include "usb_type.h"
+#ifdef STM32F303
 #include "stm32f30x.h"
+#endif
+
+#ifdef STM32F10X
+#include "stm32f10x.h"
+#endif
 
 /* Exported types ------------------------------------------------------------*/
 /* Exported constants --------------------------------------------------------*/