?? dm642_cpld.c
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/**************************************************************************/
/* Copyright 2003 by SEED. */
/* All rights reserved. Property of SEED. */
/**************************************************************************/
/*
* ======== seeddm642_cpld.c ========
* CPLD module for the SEEDDM642
*/
#include <csl.h>
#include "seeddm642.h"
/* Read an 8-bit value from a CPLD register */
Uint8 SEEDDM642_rget(Int16 regnum)
{
Uint8 *pdata;
/* Return lower 8 bits of register */
pdata = (Uint8 *)(SEEDDM642_CPLD_BASE + regnum);
return (*pdata & 0xff);
}
/* Write an 8-bit value to a CPLD register */
void SEEDDM642_rset(Int16 regnum, Uint8 regval)
{
Uint8 *pdata;
/* Write lower 8 bits of register */
pdata = (Uint8 *)(SEEDDM642_CPLD_BASE + regnum);
*pdata = (regval & 0xff);
}
/* Spin in a delay loop for delay iterations */
void SEEDDM642_wait(Uint32 delay)
{
volatile Uint32 i, n;
n = 0;
for (i = 0; i < delay; i++)
{
n = n + 1;
}
}
/* Spin in a delay loop for delay microseconds */
void SEEDDM642_waitusec(Uint32 delay)
{
SEEDDM642_wait(delay * 21);
}
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