main.c

PIC18F4550_USB开发原代码

/*********************************************************************
 *
 *                Microchip USB C18 Firmware Version 1.0
 *
 *********************************************************************
 * FileName:        main.c
 * Dependencies:    See INCLUDES section below
 * Processor:       PIC18
 * Compiler:        C18 2.30.01+
 * Company:         Microchip Technology, Inc.
 *
 * Software License Agreement
 *
 * The software supplied herewith by Microchip Technology Incorporated
 * (the Company for its PICmicro Microcontroller is intended and
 * supplied to you, the Company's customer, for use solely and
 * exclusively on Microchip PICmicro Microcontroller products. The
 * software is owned by the Company and/or its supplier, and is
 * protected under applicable copyright laws. All rights are reserved.
 * Any use in violation of the foregoing restrictions may subject the
 * user to criminal sanctions under applicable laws, as well as to
 * civil liability for the breach of the terms and conditions of this
 * license.
 *
 * THIS SOFTWARE IS PROVIDED IN AN 揂S IS?CONDITION. NO WARRANTIES,
 * WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED
 * TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. THE COMPANY SHALL NOT,
 * IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR
 * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
 *
 * Author               Date        Comment
 *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * Rawin Rojvanit       11/19/04    Original.
 * Jan Axelson           3/4/05     Mouse application adapted for 
 *                                  Generic HID application.	
 ********************************************************************/

/** I N C L U D E S **********************************************************/
//#include <p18cxxx.h>
#include "P18F4550.h"
#include "system\typedefs.h"                        // Required
#include "system\usb\usb.h"                         // Required
#include "io_cfg.h"                                 // Required

#include "system\usb\usb_compile_time_validation.h" // Optional
#include "user\user_generic_hid.h"                        // Modifiable

/** V A R I A B L E S ********************************************************/
#pragma udata

/** P R I V A T E  P R O T O T Y P E S ***************************************/
static void InitializeSystem(void);
void USBTasks(void);

/** V E C T O R  R E M A P P I N G *******************************************/
/*
extern void _startup (void);        // See c018i.c in your C18 compiler dir
#pragma code _RESET_INTERRUPT_VECTOR = 0x000800
void _reset (void)
{
    _asm goto _startup _endasm
}
#pragma code
*/
/** D E C L A R A T I O N S **************************************************/
#pragma code
/******************************************************************************
 * Function:        void main(void)
 *
 * PreCondition:    None
 *
 * Input:           None
 *
 * Output:          None
 *
 * Side Effects:    None
 *
 * Overview:        Main program entry point.
 *
 * Note:            None
 *****************************************************************************/
void main(void)
{
    InitializeSystem();
    while(1)
    {

		// Check bus status and service USB interrupts.

        USBTasks();         // USB Tasks

		// Application-specific tasks.

        ProcessIO();        // See user\user.c & .h

    }//end while
}//end main

/******************************************************************************
 * Function:        static void InitializeSystem(void)
 *
 * PreCondition:    None
 *
 * Input:           None
 *
 * Output:          None
 *
 * Side Effects:    None
 *
 * Overview:        InitializeSystem is a centralize initialization routine.
 *                  All required USB initialization routines are called from
 *                  here.
 *
 *                  User application initialization routine should also be
 *                  called from here.                  
 *
 * Note:            None
 *****************************************************************************/
static void InitializeSystem(void)
{
    ADCON1 |= 0x0F;                 // Default all pins to digital
    
    #if defined(USE_USB_BUS_SENSE_IO)
    tris_usb_bus_sense = INPUT_PIN; // See io_cfg.h
    #endif
    
    #if defined(USE_SELF_POWER_SENSE_IO)
    tris_self_power = INPUT_PIN;
    #endif
    
    mInitializeUSBDriver();         // See usbdrv.h
    
    UserInit();                     // See user.c & .h

}//end InitializeSystem

/******************************************************************************
 * Function:        void USBTasks(void)
 *
 * PreCondition:    InitializeSystem has been called.
 *
 * Input:           None
 *
 * Output:          None
 *
 * Side Effects:    None
 *
 * Overview:        Service loop for USB tasks.
 *
 * Note:            None
 *****************************************************************************/
void USBTasks(void)
{
    /*
     * Servicing Hardware
     */

    USBCheckBusStatus();                    // Must use polling method

	// Service USB interrupts.

    if(UCFGbits.UTEYE!=1)
        USBDriverService();                 // Interrupt or polling method

}// end USBTasks
/*
#pragma romdata CONFIG
_CONFIG_DECL(_CONFIG1L_DEFAULT & _PLLDIV_1_1L & _CPUDIV_OSC4_PLL6_1L & _USBDIV_2_1L,
_CONFIG1H_DEFAULT & _FOSC_HSPLL_HS_1H & _FCMEM_OFF_1H & _IESO_OFF_1H,
_CONFIG2L_DEFAULT &  _VREGEN_ON_2L & _PWRT_OFF_2L & _BOR_OFF_2L & _BORV_27_2L,
_CONFIG2H_DEFAULT & _WDT_OFF_2H & _WDTPS_32768_2H,
_CONFIG3H_DEFAULT & _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H & _CCP2MUX_ON_3H,
_CONFIG4L_DEFAULT & _STVR_ON_4L & _LVP_OFF_4L & _ICPRT_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L,
_CONFIG5L_DEFAULT & _CP0_OFF_5L & _CP1_OFF_5L & _CP2_OFF_5L & _CP3_OFF_5L,
_CONFIG5H_DEFAULT & _CPB_OFF_5H & _CPD_OFF_5H,
_CONFIG6L_DEFAULT & _WRT0_OFF_6L & _WRT1_OFF_6L & _WRT2_OFF_6L & _WRT3_OFF_6L,
_CONFIG6H_DEFAULT & _WPB_OFF_6H & _WPC_OFF_6H & _WPD_OFF_6H,
_CONFIG7L_DEFAULT & _EBTR0_OFF_7L & _EBTR1_OFF_7L & _EBTR2_OFF_7L & _EBTR3_OFF_7L,
_CONFIG7H_DEFAULT & _EBTRB_OFF_7H);
#pragma romdata
*/
/** EOF main.c ***************************************************************/