target.h

这是一个关于LPC2468芯片的IAR环境下的按键测试例程源代码

/*****************************************************************************
 *   target.h:  Header file for NXP LPC230x Family Microprocessors
 *
 *   Copyright(C) 2006, NXP Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2006.09.20  ver 1.00    Prelimnary version, first Release
 *
******************************************************************************/
#ifndef __TARGET_H
#define __TARGET_H

#ifdef __cplusplus
   extern "C" {
#endif

/* If USB device is used, the CCLK setting needs to be 57.6Mhz, CCO will be 288Mhz
to get precise USB clock 48Mhz. If USB is not used, you set any clock you want
based on the table below. If you want to use USB, change "define USE_USB" from 0 to 1 */

#define USE_USB         1

//This segment should not be modified
#ifndef TRUE
#define TRUE  1
#endif

#ifndef FALSE
#define FALSE 0
#endif


/* PLL Setting Table Matrix */
/*
  Main Osc. CCLKCFG   Fcco    Fcclk     M   N
  12Mhz   29    300Mhz    10Mhz   24  1
  12Mhz   35    360Mhz    10Mhz   14  0
  12Mhz   27    336Mhz    12Mhz   13  0
  12Mhz   14    300Mhz    20Mhz   24  1
  12Mhz   17    360Mhz    20Mhz   14  0
  12Mhz   13    336Mhz    24Mhz   13  0
  12Mhz   11    300Mhz    25Mhz   24  1
  12Mhz   9   300Mhz    30Mhz   24  1
  12Mhz   11    360Mhz    30Mhz   14  0
  12Mhz   9   320Mhz    32Mhz   39  2
  12Mhz   9   350Mhz    35Mhz   174 11
  12Mhz   7   312Mhz    39Mhz   12  0
  12Mhz   8   360Mhz    40Mhz   14  0
  12Mhz   7   360Mhz    45Mhz   14  0
  12Mhz   6   336Mhz    48Mhz   13  0
  12Mhz   5   300Mhz    50Mhz   24  1
  12Mhz   5   312Mhz    52Mhz   12  0
  12Mhz   5   336Mhz    56Mhz   13  0
  12Mhz   4   300Mhz    60Mhz   24  1
  12Mhz   4   320Mhz    64Mhz   39  2
  12Mhz   4   350Mhz    70Mhz   174 11
  12Mhz   4   360Mhz    72Mhz   14  0
  12Mhz   3   300Mhz    75Mhz   24  1
  12Mhz   3   312Mhz    78Mhz   12  0
  12Mhz   3   320Mhz    80Mhz   39  2
  12Mhz   3   336Mhz    84Mhz   13  0
*/

#if USE_USB   /* 1 is USB, 0 is non-USB related */
/* Fcck = 57.6Mhz, Fosc = 288Mhz, and USB 48Mhz */
#define PLL_MValue      11
#define PLL_NValue      0
#define CCLKDivValue    4
#define USBCLKDivValue    5

/* System configuration: Fosc, Fcclk, Fcco, Fpclk must be defined */
/* PLL input Crystal frequence range 4KHz~20MHz. */
#define Fosc  12000000
/* System frequence,should be less than 80MHz. */
#define Fcclk 57600000
#define Fcco  288000000
#else

/* Fcck = 50Mhz, Fosc = 300Mhz, and USB 48Mhz */
#define PLL_MValue      24
#define PLL_NValue      1
#define CCLKDivValue    5
#define USBCLKDivValue    6

/* System configuration: Fosc, Fcclk, Fcco, Fpclk must be defined */
/* PLL input Crystal frequence range 4KHz~20MHz. */
#define Fosc  12000000
/* System frequence,should be less than 80MHz. */
#define Fcclk 50000000
#define Fcco  300000000

#endif

/* APB clock frequence , must be 1/2/4 multiples of ( Fcclk/4 ). */
/* If USB is enabled, the minimum APB must be greater than 16Mhz */
#if USE_USB
#define Fpclk (Fcclk / 2)
#else
#define Fpclk (Fcclk / 4)
#endif

/******************************************************************************
** Function name:   TargetInit
**
** Descriptions:    Initialize the target board; it is called in a
**        necessary place, change it as needed
**
** parameters:      None
** Returned value:    None
**
******************************************************************************/
extern void TargetInit(void);
extern void ConfigurePLL( void );
extern void TargetResetInit(void);

#ifdef __cplusplus
   }
#endif

#endif /* end __TARGET_H */
/******************************************************************************
**                            End Of File
******************************************************************************/