main.c

基于S3C4510B的应用程序开发

#include "stdio.h"
/*****串口UART 0的初始化******/
/*****对相应的控制寄存器进行设置*******/

#define ARM7_ULCON0     (*(volatile unsigned *)0x03FFD000) //UART channel0 line control register
#define ARM7_UCON0      (*(volatile unsigned *)0x03FFD004) //UART channel0 control register
#define ARM7_USTAT0     (*(volatile unsigned *)0x03FFD008) //UART channel0 status register
#define ARM7_UTXBUF0    (*(volatile unsigned *)0x03FFD00c) //UART channel0 transimit holding register
#define ARM7_URXBUF0    (*(volatile unsigned *)0x03FFD010) //UART channel0 recieve buffer register
#define ARM7_UBRDIV0    (*(volatile unsigned *)0x03FFD014) //Baud rate divisor register0
#define ARM7_BRDCNT0    (*(volatile unsigned *)0x03FFD018)
#define ARM7_BRDCLK0    (*(volatile unsigned *)0x03FFD01c)
#define ARM7_INTMOD     (*(volatile unsigned *)0x03FF4000)  //Interrupt mode controller
#define ARM7_INTPND     (*(volatile unsigned *)0x03FF4004)  //Interrupt pending register
#define ARM7_INTMSK     (*(volatile unsigned *)0x03FF4008)  //Interrupt mask register
#define IOPMOD	        (*(volatile unsigned * )0x03FF5000) //IO port mode register
#define IOPDATA         (*(volatile unsigned * )0x03FF5008) //IO port data register


/*****串口UART 1的初始化******/
/*****对相应的控制寄存器进行设置*******/
/*
#define ARM7_ULCON0     (*(volatile unsigned *)0x03FFE000) //UART channel1 line control register
#define ARM7_UCON0      (*(volatile unsigned *)0x03FFE004) //UART channel1 control register
#define ARM7_USTAT0     (*(volatile unsigned *)0x03FFE008) //UART channel1 status register
#define ARM7_UTXBUF0    (*(volatile unsigned *)0x03FFE00c) //UART channel1 transimit holding register
#define ARM7_URXBUF0    (*(volatile unsigned *)0x03FFE010) //UART channel1 recieve buffer register
#define ARM7_UBRDIV0    (*(volatile unsigned *)0x03FFE014) //Baud rate divisor register0
#define ARM7_BRDCNT0    (*(volatile unsigned *)0x03FFE018)
#define ARM7_BRDCLK0    (*(volatile unsigned *)0x03FFE01c)*/

unsigned char rcv_new;                  // 接收新数据标志


void InitUART(int Baudrate) 
{
    ARM7_ULCON0 = 0x03;    /*9600波特，8位数据位，1位停止位，无校验，内部时钟*/
    ARM7_UCON0 = 0x0D;     /*0D发送缓冲和接受缓冲并未内部连接；89发送缓冲和接收缓冲内部连接*/
    ARM7_UBRDIV0 = Baudrate;
       
}

/****************************************************************************
* 名称：UART0_SendByte()
* 功能：向串口发送字节数据，并等待发送完毕。
* 入口参数：data        要发送的数据
* 出口参数：无
****************************************************************************/
void UART0_SendByte(char data)
{
	while (!(ARM7_USTAT0 & 0x40))  // 等待可以发送数据
	{
	
	}

    ARM7_UTXBUF0 = data;           // 发送数据
}

////////////////////////////////////////////////////////////////////
unsigned char UART0_ReceiveByte(void)// 接收数据
{
    unsigned char c = ARM7_URXBUF0;
    return (c);
}

void Lighten(int n) //通过输入的字符， 选择点亮相应的灯。
{   
switch (n)
   { 
    case 1 :IOPDATA = 0xfe; break;
    
    case 2 :IOPDATA = 0xfd; break;
    
    case 3 :IOPDATA = 0xfb; break;
    
    case 4 :IOPDATA = 0xf7; break;
    
    case 5 :IOPDATA = 0xef; break;
    
    case 6 :IOPDATA = 0xdf;  break;
    
    case 7 :IOPDATA = 0xbf; break;
    
    case 8 :IOPDATA = 0x7f; break;
    
   default :IOPDATA = 0xFFFFFFFF;
    
   }
   }
int main(void)
{ 
   
 
  // int i,j;
   unsigned int c;  
   char st[64] = "Please import an integer between(1-8):\n";
   char er[64] = "input error!Please import an integer between(1-8):\n"; 
   char ok[70] = "Success! LED is Lighted, Please input other number(1-8):\n";
   
   
   char *temp = st;
    
    InitUART(0xA20);
 
   // for(i=0; i<64; i++)
 while (* temp != '\0')
    {
         UART0_SendByte(* temp);
         temp++;
    }
       IOPMOD = 0xFFFFFFFF;// 打开I/O的输出端口,
      // IOPDATA = OxFFFFFFFF;
	while (1)
	{
		if (ARM7_USTAT0 & 0x20)
		  { 
		  
		    temp = ok;
			c = UART0_ReceiveByte() - '0';  //转换成整数型/			
			
			//if ( c & 0x8)
			if ( c>0 && c<= 8)
			
			{Lighten(c);		
			
			 while (*temp != '\0')
            {
               UART0_SendByte(*temp);
               temp++;             
            }
            }
			
			else
			{
			//for(j=0; j<64;j++)
			//UART0_SendByte(er[j]);
			temp = er;
			while (*temp != '\0')
            {
               UART0_SendByte(*temp);
               temp++;
               
            }
			IOPDATA = 0xFFFFFFFF;
			}
		}
		
		
	}

//  fp = (void (*)(void))0x8000;
    
//  (*fp)();  //把控制权交给kernel。
    
    return (0);	
}