usb.h

来自「非常全的nrf2401设计资料」· C头文件 代码 · 共 62 行

/* Copyright (c) 2007 Nordic Semiconductor. All Rights Reserved.
 *
 * The information contained herein is property of Nordic Semiconductor ASA.
 * Terms and conditions of usage are described in detail in NORDIC
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. 
 *
 * Licensees are granted free, non-transferable use of the information. NO
 * WARRENTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 * $LastChangedRevision: 2290 $
 */

/** @file
 *
 * This file contain structures and constants defined in Chapter 9 of the USB 2.0 standard
 *
 * @author Ken A. Redergaard
 * @author Ole Saether
 *
 */
#ifndef USB_H__
#define USB_H__

#include "usb_desc_bootloader.h"

#define USB_EP0_HSNAK() do {ep0cs = 0x02; } while(0)
#define USB_EP0_STALL() do {ep0cs = 0x11; } while(0) // Set both DSTALL and STALL when we want to stall a request during a SETUP transaction

#define INT_SUDAV    0x00
#define INT_SOF      0x04
#define INT_SUTOK    0x08
#define INT_SUSPEND  0x0C
#define INT_USBRESET 0x10
#define INT_EP0IN    0x18
#define INT_EP0OUT   0x1C
#define INT_EP1IN    0x20
#define INT_EP1OUT   0x24

#define USB_BM_STATE_CONFIGURED           0x01
#define USB_BM_STATE_ALLOW_REMOTE_WAKEUP  0x02

/** An enum describing the USB state
 * 
 *  The states described in this enum are found in Chapter 9 of the USB 2.0 specification
 */

typedef enum 
{
    ATTACHED,
    POWERED,
    DEFAULT,
    ADDRESSED,
    CONFIGURED,
    SUSPENDED
} usb_state_t;

void usb_init(void);
void usb_irq(void);

#endif  // USB_H__