C6747的各种例程

/*
 *  Copyright 2008 by Spectrum Digital Incorporated.
 *  All rights reserved. Property of Spectrum Digital Incorporated.
 */

/*
 *  Board Setup
 *
 */

#include “C6747.h“
#include “C6747_i2c.h“

/* ------------------------------------------------------------------------ *
 *                                                                          *
 *  C6747_wait（ delay ）                                                  *
 *                                                                          *
 *      Wait in a software loop for ‘x‘ delay                               *
 *                                                                          *
 * ------------------------------------------------------------------------ */
void C6747_wait（ Uint32 delay ）//6747延时函数，参数为时钟数
{
    volatile Uint32 i;
    for （ i = 0 ; i < delay ; i++ ）{ };
}

/* ------------------------------------------------------------------------ *
 *                                                                          *
 *  C6747_waitusec（ usec ） usec-微秒                                               *
 *                                                                          *
 *      Wait in a software loop for ‘x‘ microseconds                        *
 *                                                                          *
 * ------------------------------------------------------------------------ */
void C6747_waitusec（ Uint32 usec ）//6747延时函数，参数为三倍微秒数
{
    C6747_wait（ usec * 3 ）;
}

void _wait（ Uint32 delay ）//6747延时函数，参数为多少个时钟
{
    volatile Uint32 i;
    for （ i = 0 ; i < delay ; i++ ）{ };
}




/* ------------------------------------------------------------------------ *
 *                                                                          *
 *  C6747_init（ ）                                                        *
 *                                                                          *
 *      Setup I2C MSP430 & I2C GPIO Expander                              *
 *                                                                          *
 * ------------------------------------------------------------------------ */
Int16 C6747_init（ ）//系统初始化
{

   sysinit（）;

    return 0;
}

/* ------------------------------------------------------------------------ *
 *                                                                          *
 *  _resetEMIF（ ）                                                           *
 *                                                                          *
 *      Reset EMIF timings to have MAX timeout                              *
 *                                                                          *
 *      @ 594 MHz AEMIF clock is set to （ 99 MHz or 10.1 ns ）              *
 *                                                                          *
 *      chip_select     <- Chip Select [2-5]                                *
 *