real_time.h

基于DSP芯片TMS320LF2407的高速公路室外显示屏驱动程序

#ifndef  _REAL_TIME
#define  _REAL_TIME   

#include "dsp_flash.h"

int real_time_test(){
    
    BYTE a; 
    int b;
    BYTE f_temp;
    volatile unsigned char *pdata=(volatile unsigned char*)  0x8002;
     return 1;

} 


int real_time_init(){
    
    int a;
    BYTE f_temp;
    chg_speed(7);    
    f_temp=g_flag;
    g_flag=g_flag|0x03;
    g_flag=g_flag&0xF3;
    selectchip(g_flag);
    
    WSGR2=0x0c; ///C
    a=WSGR1; 
     
    WSGR2=0x0a; 
    WSGR1=0x70;
    WSGR2=0x0b; 
    WSGR1=0x82;
    
    WSGR2=0x01; 
    WSGR1=0xff;
    WSGR2=0x03; 
    WSGR1=0xff;
    WSGR2=0x05; 
    WSGR1=0xff;
        
    WSGR2=0x0a; ///A
    WSGR1=0x20;
    WSGR2=0x0b; ///B
    WSGR1=0x62;   
    
    selectchip(f_temp);
    
    chg_speed(0); 
    return 1;

}

int read_time(){
    int i;
    unsigned  addr;
    unsigned  data_temp;
    BYTE f_temp;
    
    chg_speed(7);
    
    f_temp=g_flag;
    g_flag=g_flag|0x03;
    g_flag=g_flag&0xF3;
    selectchip(g_flag);
    
    WSGR2=0x0C;              
    data_temp=WSGR1; 
    
    for(i=0;i<0x1000;i++){
       WSGR2=0x0a;              
       data_temp=WSGR1;
       if(!(data_temp&0x0080))
          break;          
    }
    
    if(i>=0x10000){
        selectchip(f_temp);
        return 0;
      }
    for(addr=0;addr<10;addr++){      
       WSGR2=addr;              
       data_temp=WSGR1;       
       *(p_flashbuf+addr)=(BYTE)data_temp;    
    } 
                             
    selectchip(f_temp);
    
    chg_speed(0);
    
    return 1;

}   


int set_time(){
    
    int i;
    unsigned  addr;
    unsigned  data_temp;
    BYTE f_temp;
    
    chg_speed(7);
    
    f_temp=g_flag;
    g_flag=g_flag|0x03;
    g_flag=g_flag&0xF3;
    selectchip(g_flag);
    
    WSGR2=0x0b;        
    WSGR1=0x80;       
    
    for(addr=0;addr<10;addr++){       
       if((addr>6)|((addr%2==0)&&(addr<5))){
          WSGR2=addr;
          i=*(p_flashbuf+addr);        
          WSGR1=i;//i;                 
        }
       else{
           WSGR2=addr;
           WSGR1=0xFF;
       }   
    } 
    WSGR2=0x0b;        
    WSGR1=0x62; 
                         
    selectchip(f_temp);
    
    chg_speed(0);
    
    return 1;

}


int  find_time(int i){
     int j=0;
     int k=0;
     do{
         i--;
         j++;
      }while((p_recbuf[i]!='+')&&(j<10));
      
     if(j>=9)
        return 0;
     if(p_recbuf[i]!='+')
        return 0;
     if(i<10)
        return 0;
     k=0;
     for(j=0;j<6;j++){
         p_flashbuf[k]=(p_recbuf[i-2]&0x0F)*16+(p_recbuf[i-1]&0x0F);
         if(k>6)
           k=k+1;
         if(k==4)
            k=7;
         if(k<3)
           k=k+2;          
         i=i-3;
         if(i<10)
           return 0;
     }

    return 1;
}

#endif