usb: Moved usb_get_state() into the main usb implementation

src/platforms/common/cdcacm.c

@@ -48,8 +48,6 @@
 
 #include <libopencm3/usb/cdc.h>
 
-static int configured;
-
 static bool gdb_uart_dtr = true;
 
 static void usb_serial_set_state(usbd_device *dev, uint16_t iface, uint8_t ep);
@@ -103,11 +101,6 @@ static enum usbd_request_return_codes debug_uart_control_request(usbd_device *de
 	return USBD_REQ_NOTSUPP;
 }
 
-int usb_get_config(void)
-{
-	return configured;
-}
-
 bool gdb_uart_get_dtr(void)
 {
 	return gdb_uart_dtr;
@@ -130,7 +123,7 @@ void usb_serial_set_state(usbd_device *const dev, const uint16_t iface, const ui
 
 void usb_serial_set_config(usbd_device *dev, uint16_t wValue)
 {
-	configured = wValue;
+	usb_config = wValue;
 
 	/* GDB interface */
 #if defined(STM32F4) || defined(LM4F)

src/platforms/common/cdcacm.h

@@ -28,12 +28,13 @@
 #ifndef __CDCACM_H
 #define __CDCACM_H
 
+#include <stdint.h>
 #include <stdbool.h>
 #include "usb.h"
 
 void usb_serial_set_config(usbd_device *dev, uint16_t wValue);
 /* Returns current usb configuration, or 0 if not configured. */
-int usb_get_config(void);
+uint16_t usb_get_config(void);
 
 bool gdb_uart_get_dtr(void);
 

src/platforms/common/usb.c

@@ -28,6 +28,7 @@
 #include "serialno.h"
 
 usbd_device *usbdev = NULL;
+uint16_t usb_config;
 
 /* We need a special large control buffer for this device: */
 static uint8_t usbd_control_buffer[256];
@@ -46,6 +47,11 @@ void blackmagic_usb_init(void)
 	nvic_enable_irq(USB_IRQ);
 }
 
+uint16_t usb_get_config(void)
+{
+	return usb_config;
+}
+
 void USB_ISR(void)
 {
 	usbd_poll(usbdev);

src/platforms/common/usb.h

@@ -21,9 +21,11 @@
 #ifndef USB_H
 #define USB_H
 
+#include <stdint.h>
 #include <libopencm3/usb/usbd.h>
 
 extern usbd_device *usbdev;
+extern uint16_t usb_config;
 
 #define CDCACM_PACKET_SIZE 64