usb_task.h

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00001 
00016 #ifndef _USB_TASK_H_
00017 #define _USB_TASK_H_
00018 
00021 
00022 //_____ I N C L U D E S ____________________________________________________
00023 
00024 
00025 //_____ M A C R O S ________________________________________________________
00026 
00030 #define Usb_send_event(x)               (g_usb_event |= (1<<x))
00031 #define Usb_ack_event(x)                (g_usb_event &= ~(1<<x))
00032 #define Usb_clear_all_event()           (g_usb_event = 0)
00033 #define Is_usb_event(x)                 ((g_usb_event & (1<<x)) ? TRUE : FALSE)
00034 #define Is_not_usb_event(x)             ((g_usb_event & (1<<x)) ? FALSE: TRUE)
00035 #define Is_host_emergency_exit()        (Is_usb_event(EVT_HOST_DISCONNECTION) || Is_usb_event(EVT_USB_DEVICE_FUNCTION))
00036 
00037 #define EVT_USB_POWERED               1         // USB plugged
00038 #define EVT_USB_UNPOWERED             2         // USB un-plugged
00039 #define EVT_USB_DEVICE_FUNCTION       3         // USB in device
00040 #define EVT_USB_HOST_FUNCTION         4         // USB in host
00041 #define EVT_USB_SUSPEND               5         // USB suspend
00042 #define EVT_USB_WAKE_UP               6         // USB wake up
00043 #define EVT_USB_RESUME                7         // USB resume
00044 #define EVT_USB_RESET                 8         // USB reset
00045 #define EVT_HOST_SOF                  9         // Host start of frame sent
00046 #define EVT_HOST_HWUP                 10        // Host wakeup detected
00047 #define EVT_HOST_DISCONNECTION        11        // The target device is disconencted
00048 
00049 
00050 
00051 #define USB_MODE_UNDEFINED            0x00
00052 #define USB_MODE_HOST                 0x01
00053 #define USB_MODE_DEVICE               0x02
00054 
00055 //_____ D E C L A R A T I O N S ____________________________________________
00056 
00057 extern volatile U16 g_usb_event;
00058 
00072 void usb_task_init     (void);
00073 
00084 void usb_task          (void);
00085 
00086 extern volatile U8 private_sof_counter;
00087 
00089 
00090 #endif /* _USB_TASK_H_ */
00091 

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