target.c

基于ARM7处理器的中断与串口在ucos下切换的演示程序

	VICIntSelect   = 0x00000000;	/* 设置所有中断分配为IRQ中断			*/
	VICVectCntl2   = 0x20 | 0x0e;	/* 分配外部中断0到向量中断0				*/
	VICVectAddr2   = (uint32)Eint0_Handler;/* 设置中断服务程序地址					*/
	EXTINT         = 0x01;			/* 清除EINT0中断标志					*/
	VICIntEnable   = 1 << 0x0e;		/* 使能EINT0中断						*/

    /* Slot 1分配给Uart0 */
    VICVectAddr5= (uint32)Uart0_Handler;
    VICVectCntl5= (0x20 | 0x06);
    VICIntEnable = 1 << 6;

	    /* Slot 12分配给Uart1 */
    VICVectAddr12 = (uint32)Uart1_Handler;
    VICVectCntl12 = (0x20 | 0x07);
    VICIntEnable = 1 << 7;

    
 }

/*********************************************************************************************************
** 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)
{
    UARTMODE  uart0_set,uart1_set;

	uart0_set.baudrate = 57600;//Dtu_config.baudrate;//57600;//conf_get_bps();      // 串口0的波特率
    uart0_set.datab    = 8;//conf_get_data();     // 8位数据位
    uart0_set.stopb    = 1;//conf_get_stop();     // 1位停止位
    uart0_set.parity   = 0;//conf_get_crc();      // 无奇偶校验

	uart1_set.baudrate = 38400;  // 串口1的波特率
    uart1_set.datab    = 8;       // 8位数据位
    uart1_set.stopb    = 1;       // 1位停止位
    uart1_set.parity   = 0;       // 无奇偶校验
	

	
    OS_ENTER_CRITICAL();
    VICInit();
	EInt0Init();
    Timer0Init();
	/* 设置串行口 */
    /* initialize UART*/
	UART1_Ini((UARTMODE *)&uart1_set); // 初始化串口模式
	UART0_Ini((UARTMODE *)&uart0_set); // 初始化串口模式
    
    OS_EXIT_CRITICAL();

	PINSEL2 = 0;
	IO1DIR  |= 0x01000000;  //P1.24 MODEM RESET
	IO1CLR  |= 0x01000000;

	//IO1DIR  |= 0x00040000 ;  //wdi

	
}
 
/*********************************************************************************************************
** Function name:			TargetResetInit
**
** Descriptions:			Initialize the target 
**
** 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

    PINSEL0 = (PINSEL0 & 0xFFFF0000) | 0x05 | 0x50;

/* 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;



/* 设置实时时钟 */
/* initialize RTC*/
    /*CCR = 1;
    PREINT = Fpclk / 32768 - 1;
    PREFRAC = Fpclk - (Fpclk / 32768) * 32768;
    YEAR = 2003;
    MONTH = 6;
    DOM = 2;
    
/* initialize VIC*/
    /*VICIntEnClr = 0xffffffff;
    VICVectAddr = 0;
    VICIntSelect = 0;
    T0IR = 0xffffffff;
    T0TCR = 0X02;
	*/
}

/*********************************************************************************************************
**                  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
********************************************************************************************************/