ad.c

AD转把模拟量换成12位数据

#include "REG5402.h"
int timer1_over;
int read;
void cpu_init()
{
  PMST=0x3FA0;
  SWWSR=0x7FFF;
  SWCR=0x0000;
  IMR=0;
  IFR=IFR;
  BSCR=0x0002;
  SPSA1=0x000E;
  SPSD1=0x3020; 
}
void timer1_init()
{
  PRD1=0x1DF;
  TCR1=0x02EB;
  IMR=IMR|0x0080;
}
main()
{
   read=0;
   asm(" ssbx intm");
   cpu_init();
   timer1_init();
   asm(" rsbx intm");
   for(;;)
     {
       serialbyte_send(0xFFFF,1);
       read=(READS&0x0FFF);
       serialbyte_send(read,1);
      }
}
interrupt void timer1_int()
 {
   timer1_over=1;
   TCR1=0x2DB;
}