usb_device_task.h File Reference

,vThis file contains the function declarations for USB device task More...

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Defines
#define	B_IDLE   0
	Definitions of B-Device states.
#define	B_SRP_INIT   1
#define	B_PERIPHERAL   2
#define	B_WAIT_ACON   3
#define	B_HOST   4
#define	B_END_HNP_SUSPEND   5
#define	Start_session_with_srp()   (otg_device_sessions |= 0x01)
	Is the current session a result of a SRP ?
#define	End_session_with_srp()   (otg_device_sessions &= ~0x01)
#define	Is_session_started_with_srp()   (((otg_device_sessions&0x01) != 0) ? TRUE : FALSE)
#define	Srp_sent_and_waiting_answer()   (otg_device_sessions |= 0x02)
	Has a SRP been sent, and waiting for an answer.
#define	Ack_srp_sent_and_answer()   (otg_device_sessions &= ~0x02)
#define	Is_srp_sent_and_waiting_answer()   (((otg_device_sessions&0x02) != 0) ? TRUE : FALSE)
#define	TB_SRP_FAIL_MIN   0x0A28
	Tb_Srp_Fail must be between 5 and 6 sec. With an interrupt routine executed each 2ms, its value becomes 2500 (used:5.2sec).
#define	Init_tb_srp_counter()   (otg_tb_srp_cpt = 0)
#define	Is_tb_srp_counter_overflow()   ((otg_tb_srp_cpt > TB_SRP_FAIL_MIN) ? TRUE : FALSE)
Functions
void	usb_device_task_init (void)
	This function initializes the USB device controller.
void	usb_start_device (void)
	This function initializes the USB device controller.
void	usb_device_task (void)
	Entry point of the USB device mamagement.
Variables
U8	otg_device_sessions
	OTG B-Device SRP protocole specific states or events.
U8	otg_b_device_state
	Public : (U8) otg_b_device_state; Store the current state of the B-Device.
U8	sof_seen_in_session
	Public : (U8) sof_seen_in_session; Indicates if a SOF has been received during the current session /.
U16	otg_tb_srp_cpt
	Public : (U16) otg_tb_srp_cpt; Counter used to signal a SRP fail condition (SRP fails if Tb_Srp_Fail elapsed).

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Detailed Description

,vThis file contains the function declarations for USB device task

Copyright (c) 2004 Atmel.

Please read file license.txt for copyright notice.

Version:

1.2 at90usb128-otg-dual_role-toggle-1_0_0

Id

usb_device_task.h,v 1.2 2007/02/13 10:17:53 arobert Exp

Todo:

Bug:

Definition in file usb_device_task.h.

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