target.c

lpc2131keil例程

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			target.c
** Last modified Date:	2004-09-17
** Last Version:		1.0
** Descriptions:		header file of the specific codes for LPC2100 target boards
**						Every project should include a copy of this file, user may modify it as needed
**------------------------------------------------------------------------------------------------------
** Created by:			Chenmingji
** Created date:		2004-02-02
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:			Chenmingji
** Modified date:		2004-09-17
** Version:				1.01
** Descriptions:		Renewed the template, added more compiler supports 
**
**------------------------------------------------------------------------------------------------------
** Modified by: 
** Modified date:
** Version:	
** Descriptions: 
**
********************************************************************************************************/

#define IN_TARGET
#include "config.h"

/*********************************************************************************************************
** Function name:			IRQ_Exception
**
** Descriptions:			interrupt exceptional handler , change it as needed
**
** input parameters:		None
** Returned value:			None
**         
** Used global variables:	None
** Calling modules:			None
**
** Created by:				Chenmingji
** Created Date:			2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        void __irq IRQ_Exception(void)
{
    while(1);                   //  change it to your code 这一句替换为自己的代码
}

/*********************************************************************************************************
** Function name:			FIQ_Exception
**
** Descriptions:			Fast interrupt exceptional handler , change it as needed
**
** input parameters:		None
** Returned value:			None
**         
** Used global variables:	None
** Calling modules:			None
**
** Created by:				Chenmingji
** Created Date:			2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        void FIQ_Exception(void)
{
    while(1);                   // change it to your code  这一句替换为自己的代码
}

/*********************************************************************************************************
** Function name:			TargetInit
**
** Descriptions:			Initialize the target board; it is called in a necessary place, change it as 
**							needed
**
** input parameters:		None
** Returned value:			None
**         
** Used global variables:	None
** Calling modules:			None
**
** Created by:				Chenmingji
** Created Date:			2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
       void TargetInit(void)
{
    /* 添加自己的代码 */
    /* Add your codes here */
}

/*********************************************************************************************************
** Function name:			TargetResetInit
**
** Descriptions:			Initialize the target board before running the main() function; User may
**							change it as needed, but may not deleted it.
**
** input parameters:		None
** Returned value:			None
**         
** Used global variables:	None
** Calling modules:			None
**
** Created by:				Chenmingji
** Created Date:			2004/02/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        void TargetResetInit(void)
{
#ifdef __DEBUG_RAM    
    MEMMAP = 0x2;                   //remap
#endif

#ifdef __DEBUG_FLASH    
    MEMMAP = 0x1;                   //remap
#endif

#ifdef __IN_CHIP    
    MEMMAP = 0x1;                   //remap
#endif

/* 设置系统各部分时钟 */
/* Set system timers for each component */
    PLLCON = 1;
#if (Fpclk / (Fcclk / 4)) == 1
    VPBDIV = 0;
#endif
#if (Fpclk / (Fcclk / 4)) == 2
    VPBDIV = 2;
#endif
#if (Fpclk / (Fcclk / 4)) == 4
    VPBDIV = 1;
#endif

#if (Fcco / Fcclk) == 2
    PLLCFG = ((Fcclk / Fosc) - 1) | (0 << 5);
#endif
#if (Fcco / Fcclk) == 4
    PLLCFG = ((Fcclk / Fosc) - 1) | (1 << 5);
#endif
#if (Fcco / Fcclk) == 8
    PLLCFG = ((Fcclk / Fosc) - 1) | (2 << 5);
#endif
#if (Fcco / Fcclk) == 16
    PLLCFG = ((Fcclk / Fosc) - 1) | (3 << 5);
#endif
    PLLFEED = 0xaa;
    PLLFEED = 0x55;
    while((PLLSTAT & (1 << 10)) == 0);
    PLLCON = 3;
    PLLFEED = 0xaa;
    PLLFEED = 0x55;
    
    /* 设置存储器加速模块 */
    /* Set memory accelerater module*/
    MAMCR = 0;
#if Fcclk < 20000000
    MAMTIM = 1;
#else
#if Fcclk < 40000000
    MAMTIM = 2;
#else
    MAMTIM = 3;
#endif
#endif
    MAMCR = 2;
    
    /* 初始化VIC */
    /* initialize VIC*/
    VICIntEnClr = 0xffffffff;
    VICVectAddr = 0;
    VICIntSelect = 0;

    /* 添加自己的代码 */
    /* Add your codes here */

}
#define	UART_BPS	115200				// 串口通讯波特率
/*
*********************************************************************************************************
** 函数名称 ：UART0_Init()
** 函数功能 ：串口初始化，设置为8位数据位，1位停止位，无奇偶校验，波特率115200。
** 入口参数 ：无
** 出口参数 ：无
*********************************************************************************************************
*/
void UART0_Init (void)
{
	uint16 Fdiv;
	
	PINSEL0 = (PINSEL0 & (~0x0F)) | 0x05;	// 设置I/O连接到UART0
	
	U0LCR = 0x83;							// DLAB=1,允许设置波特率
	Fdiv  = (Fpclk / 16) / UART_BPS;		// 设置波特率
	U0DLM = Fdiv / 256;
	U0DLL = Fdiv % 256;
	U0LCR = 0x03;
}

/*
*********************************************************************************************************
** 函数名称 ：UART0_SendByte()
** 函数功能 ：向串口发送字节数据，并等待发送完毕，查询方式。
** 入口参数 ：dat	要发送的数据
** 出口参数 ：无
*********************************************************************************************************
*/
void UART0_SendByte (uint8 dat)
{
	U0THR = dat;
	while ((U0LSR & 0x40) == 0);			// 等待数据发送完毕
}
/*
*********************************************************************************************************
** 函数名称 ：UART0_SendStr()
** 函数功能 ：向串口发送一字符串
** 入口参数 ：str	要发送的字符串的指针
** 出口参数 ：无
*********************************************************************************************************
*/
void UART0_SendStr (char *str)
{
	while (1)
	{
		if (*str == '\0')	break;			// 遇到结束符，退出
		UART0_SendByte(*str++);				// 发送数据
	}
}
/*
*******************************************************************************************************
** 函数名称 ：PC_DispChar_LED()
** 函数功能 ：向PC机LED窗口发送显示字符。
** 入口参数 ：x	    显示位置0~8，其中8为LED灯
**            data	显示的笔画，其中1为点亮，0为熄灭
** 出口参数	：无	
*******************************************************************************************************
*/
void PC_Disp_LED(uint8 x, uint8 data)
{
	UART0_SendByte(0xff);
	UART0_SendByte(0x80);
	UART0_SendByte(x);
	UART0_SendByte(data);
	UART0_SendByte(0x00);
}
/*
*******************************************************************************************************
** 函数名称 ：PC_DispChar()
** 函数功能 ：向PC机DOS窗口发送显示字符。
** 入口参数 ：x	    显示纵坐标
**            y	    显示横坐标
**			  chr	显示的字符，不能为ff
**            color 显示的颜色
** 出口参数	：无	
*******************************************************************************************************
*/
void PC_Disp_DOS(uint8 x, uint8 y,uint8 chr, uint8 color)
{
	UART0_SendByte(0xff);
	UART0_SendByte(x);
	UART0_SendByte(y);
	UART0_SendByte(chr);
	UART0_SendByte(color);
}
/*
*******************************************************************************************************
** 函数名称 ：PC_DispChar_TIME()
** 函数功能 ：向PC机TIME窗口发送显示字符。
** 入口参数 ：x	    显示位置0~14，分别对应于年，月，日，星期，时，分，秒
**            data	显示的笔画，其中1为点亮，0为熄灭
** 出口参数	：无		
*******************************************************************************************************
*/
void PC_Disp_TIME(uint8 x, uint8 data)
{
	UART0_SendByte(0xff);
	UART0_SendByte(0x81);
	UART0_SendByte(x);
	UART0_SendByte(data);
	UART0_SendByte(0x00);
}
void PLL_Init (void)
{
PLLCON = 1;									// 使能PLL
PLLCFG = 0x23;								// 设置M为4，P为2，和掉电前一样
PLLFEED = 0xaa;								// 发送PLL馈送序列
PLLFEED = 0x55; 
while((PLLSTAT & (1 << 10)) == 0);			// 等待PLL锁定
PLLCON = 3;								// PLL使能和连接
PLLFEED = 0xaa;								// 发送PLL馈送序列
PLLFEED = 0x55;	
}
/*********************************************************************************************************
**                  以下为一些与系统相关的库函数的实现
**                  具体作用请ads的参考编译器与库函数手册
**                  用户可以根据自己的要求修改        
********************************************************************************************************/
/*********************************************************************************************************
**                  The implementations for some library functions
**                  For more details, please refer to the ADS compiler handbook and The library 
**					function manual
**                  User could change it as needed       
********************************************************************************************************/
#include <rt_sys.h>
#include <stdio.h>

#pragma import(__use_no_semihosting_swi)

        int __rt_div0(int a)
{
    a = a;
    return 0;
}

        int fputc(int ch,FILE *f)
{
    ch = ch;
    f = f;
    return 0;
}

    int fgetc(FILE *f)
{
    f = f;
    return 0;
}


        int _sys_close(FILEHANDLE fh)
{
    fh = fh;
    return 0;
}

        int _sys_write(FILEHANDLE fh, const unsigned char * buf,
                      unsigned len, int mode)
{
    fh = fh;
    buf = buf;
    len =len;
    mode = mode;
    return 0;
}
        int _sys_read(FILEHANDLE fh, unsigned char * buf,
                     unsigned len, int mode)
{
    fh = fh;
    buf = buf;
    len =len;
    mode = mode;
    
    return 0;
}

       void _ttywrch(int ch)
{
    ch = ch;
}

        int _sys_istty(FILEHANDLE fh)
{
    fh = fh;
    return 0;
}
        int _sys_seek(FILEHANDLE fh, long pos)
{
    fh = fh;
    return 0;
}
        int _sys_ensure(FILEHANDLE fh)
{
    fh = fh;
    return 0;
}

        long _sys_flen(FILEHANDLE fh)
{
    fh = fh;
    return 0;
}
       int _sys_tmpnam(char * name, int sig, unsigned maxlen)
{
    name = name;
    sig = sig;
    maxlen = maxlen;
    return 0;
}

        void _sys_exit(int returncode)
{
    returncode = returncode;
}

        char *_sys_command_string(char * cmd, int len)
{
    cmd = cmd;
    len = len;
    return 0;
}


/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/