implement USB_SUPPORT_ENABLED guard to allow compilation without USB support

Author: joecarl

include/mdt/drivers/usb_input.h

@@ -2,23 +2,71 @@
 #define MDT_USB_INPUT_H
 
 #include <stdbool.h>
+#if __has_include( "usbh_hid.h")
 #include "usbh_hid.h"
+#define USB_SUPPORT_ENABLED
+#endif
+
+typedef struct {
+	uint8_t state;
+	uint8_t lctrl;
+	uint8_t lshift;
+	uint8_t lalt;
+	uint8_t lgui;
+	uint8_t rctrl;
+	uint8_t rshift;
+	uint8_t ralt;
+	uint8_t rgui;
+	uint8_t keys[6];
+} MDT_USB_INPUT_KeybdInfo;
+
+typedef struct {
+  uint8_t x;
+  uint8_t y;
+  uint8_t buttons[3];
+} MDT_USB_INPUT_MouseInfo;
+
+
+#ifdef USB_SUPPORT_ENABLED
 
 
 void MDT_USB_INPUT_Init();
 
 bool MDT_USB_INPUT_IsKbdKeyPressed(uint8_t key);
 
-HID_KEYBD_Info_TypeDef* MDT_USB_INPUT_GetKbdInfo();
-
-HID_MOUSE_Info_TypeDef* MDT_USB_INPUT_GetMouseInfo();
+MDT_USB_INPUT_KeybdInfo* MDT_USB_INPUT_GetKeybdInfo();
 
-USBH_HandleTypeDef* MDT_USB_INPUT_GetHandle();
+MDT_USB_INPUT_MouseInfo* MDT_USB_INPUT_GetMouseInfo();
 
 uint16_t MDT_USB_INPUT_GetEventCount();
 
+USBH_HandleTypeDef* MDT_USB_INPUT_GetHandle();
+
 USBH_StatusTypeDef MDT_USB_INPUT_GetLastCode();
 
 const char* MDT_USB_INPUT_GetState();
 
+
+#else 
+
+
+#define MDT_USB_INPUT_Init()
+
+#define MDT_USB_INPUT_GetState() "USB_DISABLED"
+
+#define MDT_USB_INPUT_GetKeybdInfo() (NULL)
+
+#define MDT_USB_INPUT_GetMouseInfo() (NULL)
+
+#define MDT_USB_INPUT_GetEventCount() (0)
+
+#define MDT_USB_INPUT_GetHandle() (NULL)
+
+#define  MDT_USB_INPUT_GetLastCode() (0)
+
+#define MDT_USB_INPUT_IsKbdKeyPressed(k) (false)
+
+
+#endif
+
 #endif

src/drivers/usb_input.c

@@ -3,10 +3,12 @@
 #include <stm32f4xx_ll_bus.h>
 #include <stm32f4xx_ll_tim.h>
 
-#include "usbh_core.h"
 #include "mdt/clkinfo.h"
 #include "mdt/drivers/usb_input.h"
 
+#ifdef USB_SUPPORT_ENABLED
+
+#include "usbh_core.h"
 
 static USBH_HandleTypeDef hUsbHost;
 
@@ -92,16 +94,16 @@ const char* MDT_USB_INPUT_GetState() {
 }
 
 
-HID_KEYBD_Info_TypeDef* MDT_USB_INPUT_GetKbdInfo() {
+MDT_USB_INPUT_KeybdInfo* MDT_USB_INPUT_GetKeybdInfo() {
 
-	return kbdInfo;
+	return (MDT_USB_INPUT_KeybdInfo*) kbdInfo;
 
 }
 
 
-HID_MOUSE_Info_TypeDef* MDT_USB_INPUT_GetMouseInfo() {
+MDT_USB_INPUT_MouseInfo* MDT_USB_INPUT_GetMouseInfo() {
 
-	return mouseInfo;
+	return (MDT_USB_INPUT_MouseInfo*) mouseInfo;
 
 }
 
@@ -202,3 +204,4 @@ static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id) {
 
 }
 
+#endif