《USB 2.0 应用系统开发实例精讲》源代码
源代码在线查看： usb_drv.h
/*H**************************************************************************
* NAME: usb_drv.h
*----------------------------------------------------------------------------
* Copyright (c) 2003 Atmel.
*----------------------------------------------------------------------------
* RELEASE: c5131-usb-kbd-light-1_0_2
* REVISION: 1.4
*----------------------------------------------------------------------------
* PURPOSE:
* This file contains the USB low level driver definition
*****************************************************************************/
#ifndef _USB_DRV_H_
#define _USB_DRV_H_
/*_____ I N C L U D E S ____________________________________________________*/
/*_____ M A C R O S ________________________________________________________*/
/*F**************************************************************************
* NAME: CONTROL / BULK / INTERRUPT / ISOCHRONOUS
*----------------------------------------------------------------------------
* PURPOSE:
* These define are the values used to enable and configure an endpoint.
* They are written in the UEPCONX register.
*****************************************************************************/
#define CONTROL 0x80
#define BULK_IN 0x86
#define BULK_OUT 0x82
#define INTERRUPT_IN 0x87
#define INTERRUPT_OUT 0x83
#define ISOCHRONOUS_IN 0x85
#define ISOCHRONOUS_OUT 0x81
#define BULK_MAX_SIZE ((Uchar)64)
/*M**************************************************************************
* NAME: wSWAP
*----------------------------------------------------------------------------
* PARAMS:
* x : (Uint16) the 16 bit word to swap
* return: (Uint16) the 16 bit word x with the 2 bytes swaped
*----------------------------------------------------------------------------
* PURPOSE:
* This macro swaps the Uchar order in words.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define wSWAP(x) ((((x)>>8)&0x00FF)|(((x)
/*M**************************************************************************
* NAME: dwSWAP
*----------------------------------------------------------------------------
* PARAMS:
* x : (Uint32) the 32 bit double word to swap
* return: (Uint32) the 32 bit double word x with the 4 bytes swaped
*----------------------------------------------------------------------------
* PURPOSE:
* This macro swaps the Uchar order in double words.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define dwSWAP(x) ((((x)>>24)&0x000000FF)|(((x)>>8)&0x0000FF00)|(((x)
/*M**************************************************************************
* NAME: General endpoint management
*----------------------------------------------------------------------------
* PARAMS:
*----------------------------------------------------------------------------
* PURPOSE:
* These macros manage the common features of the endpoints
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define Usb_select_ep(e) (UEPNUM = e)
#define Usb_configure_ep_type(x) (UEPCONX = x)
#define Usb_set_stall_request() (UEPSTAX |= MSK_STALLRQ)
#define Usb_clear_stall_request() (UEPSTAX &= ~MSK_STALLRQ)
#define Usb_clear_stalled() (UEPSTAX &= ~MSK_STALLED)
#define Usb_stall_requested() (UEPSTAX & MSK_STALLRQ)
#define Usb_stall_sent() (UEPSTAX & MSK_STALLED)
#define Usb_read_byte() (UEPDATX)
#define Usb_write_byte(x) (UEPDATX = x)
#define Usb_endpoint_interrupt() (UEPINT != 0 )
/*M**************************************************************************
* NAME: OUT endpoint management
*----------------------------------------------------------------------------
* PARAMS:
*----------------------------------------------------------------------------
* PURPOSE:
* These macros manage the OUT endpoints.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define Usb_clear_rx() (UEPSTAX &= ~MSK_RXOUT)
#define Usb_clear_rx_bank0() (UEPSTAX &= ~MSK_RXOUTB0)
#define Usb_clear_rx_bank1() (UEPSTAX &= ~MSK_RXOUTB1)
#define Usb_rx_complete() (UEPSTAX & MSK_RXOUTB0B1)
unsigned char ReadEp(unsigned char EpNum,unsigned char *Data);
void WriteEp(unsigned char EpNum,unsigned char nLength,unsigned char *Data);
void EpEnable(void);
/*M**************************************************************************
* NAME: IN endpoint management
*----------------------------------------------------------------------------
* PARAMS:
*----------------------------------------------------------------------------
* PURPOSE:
* These macros manage the IN endpoints.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define Usb_set_tx_ready() (UEPSTAX |= MSK_TXRDY)
#define Usb_clear_tx_ready() (UEPSTAX &= ~MSK_TXRDY)
#define Usb_clear_tx_complete() (UEPSTAX &= ~MSK_TXCMPL)
#define Usb_tx_complete() (UEPSTAX & MSK_TXCMPL)
#define Usb_tx_ready() (UEPSTAX & MSK_TXRDY)
/*M**************************************************************************
* NAME: CONTROL endpoint management
*----------------------------------------------------------------------------
* PARAMS:
*----------------------------------------------------------------------------
* PURPOSE:
* These macros manage the Control endpoints.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define Usb_clear_rx_setup() (UEPSTAX &= ~MSK_RXSETUP)
#define Usb_setup_received() (UEPSTAX & MSK_RXSETUP)
#define Usb_clear_DIR() (UEPSTAX &= ~MSK_DIR)
#define Usb_set_DIR() (UEPSTAX |= MSK_DIR)
/*M**************************************************************************
* NAME: General USB management
*----------------------------------------------------------------------------
* PARAMS:
*----------------------------------------------------------------------------
* PURPOSE:
* These macros manage the USB controller.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define Usb_enable() (USBCON |= MSK_USBE)
#define Usb_disable() (USBCON &= ~MSK_USBE)
#define Usb_detach() (USBCON |= MSK_DETACH)
#define Usb_attach() (USBCON &= ~MSK_DETACH)
#define Usb_clear_reset() (USBINT &= ~MSK_EORINT)
#define Usb_clear_resume() (USBINT &= ~MSK_WUPCPU)
#define Usb_clear_sof() (USBINT &= ~MSK_SOFINT)
#define Usb_clear_suspend() (USBINT &= ~MSK_SPINT)
#define Usb_suspend() (USBINT & MSK_SPINT)
#define Usb_resume() (USBINT & MSK_WUPCPU)
#define Usb_reset() (USBINT & MSK_EORINT)
#define Usb_sof() (USBINT & MSK_SOFINT)
#define Usb_configure_address(x) (USBADDR = (0x80 | x))
#define Usb_set_CONFG() (USBCON |= MSK_CONFG)
#define Usb_clear_CONFG() (USBCON &= ~MSK_CONFG)
#define Usb_set_FADDEN() (USBCON |= MSK_FADDEN)
#define Usb_clear_FADDEN() (USBCON &= ~MSK_FADDEN)
/*M**************************************************************************
* NAME: USB interrupt management
*----------------------------------------------------------------------------
* PARAMS:
*----------------------------------------------------------------------------
* PURPOSE:
* These macros manage the USB controller.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define Usb_enable_int() (IEN1 |= MSK_EUSB)
#define Usb_disable_int() (IEN1 &= ~MSK_EUSB)
#define Usb_enable_reset_int() (USBIEN |= MSK_EEORINT)
#define Usb_enable_resume_int() (USBIEN |= MSK_EWUPCPU)
#define Usb_enable_sof_int() (USBIEN |= MSK_ESOFINT)
#define Usb_enable_suspend_int() (USBIEN |= MSK_ESPINT)
#define Usb_disable_reset_int() (USBIEN &= ~MSK_EEORINT)
#define Usb_disable_resume_int() (USBIEN &= ~MSK_EWUPCPU)
#define Usb_disable_sof_int() (USBIEN &= ~MSK_ESOFINT)
#define Usb_disable_suspend_int() (USBIEN &= ~MSK_ESPINT)
#define Usb_enable_ep_int(e) {UEPIEN |= (0x01 #define Usb_disable_ep_int(e) {UEPIEN &= ~(0x01
/*M**************************************************************************
* NAME: USB clock management
*----------------------------------------------------------------------------
* PARAMS:
*----------------------------------------------------------------------------
* PURPOSE:
* These macros manage the USB clock.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
#define Usb_set_EXT48() (PLLCON |= MSK_EXT48)
#define Usb_clear_EXT48() (PLLCON &= ~MSK_EXT48)
#define Pll_stop() (PLLCON &= ~MSK_PLLEN)
#define Pll_set_div(n) (PLLDIV = n)
#define Pll_enable() (PLLCON |= MSK_PLLEN)
/*_____ D E C L A R A T I O N ______________________________________________*/
void usb_configure_endpoint (Uchar , Uchar);
Uchar usb_get_nb_byte (void);
Uint16 usb_get_nb_byte_epw (void);
Uchar* usb_send_ep0_packet (Uchar*, Uchar);
Uchar* usb_send_packet (Uchar , Uchar*, Uchar);
Uchar* usb_read_packet (Uchar , Uchar*, Uchar);
void usb_reset_endpoint (Uchar);
Uchar usb_select_enpoint_interrupt (void);
void usb_halt_endpoint (Uchar);
void configure_usb_clock (void);
#endif /* _USB_DRV_H_ */
