text2.c

一次拟合算法,AD转换后的预处理算法,串口,定时器,积分,排序,三角形,延时,一元二次方程.

#include <REG52.H>                /* special function register declarations   */
                                  /* for the intended 8051 derivative         */

#include <stdio.h>                /* prototype declarations for I/O functions */


#ifdef MONITOR51                         /* Debugging with Monitor-51 needs   */
char code reserve [3] _at_ 0x23;         /* space for serial interrupt if     */
#endif                                   /* Stop Exection with Serial Intr.   */
                                         /* is enabled                        */



void main(void)  {

  char a;
  int  b;
  long c;

  unsigned char x;
  unsigned int  y;
  unsigned long z;

  float f,g;

  char d, buf [10];

  int argsread;
  
//Setup the serial port for 1200 baud at 16MHz.
#ifndef MONITOR51
    SCON  = 0x50;		        /* SCON: mode 1, 8-bit UART, enable rcvr      */
    TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
    TH1   = 221;                /* TH1:  reload value for 1200 baud @ 16MHz   */
    TR1   = 1;                  /* TR1:  timer 1 run                          */
    TI    = 1;                  /* TI:   set TI to send first char of UART    */
#endif


  printf ("Enter a signed byte, int, and long\n");
  argsread = scanf ("%bd %d %ld", &a, &b, &c);
  printf ("%d arguments read\n", argsread);

  printf ("Enter an unsigned byte, int, and long\n");
  argsread = scanf ("%bu %u %lu", &x, &y, &z);
  printf ("%d arguments read\n", argsread);

  printf ("Enter a character and a string\n");
  argsread = scanf ("%c %9s", &d, buf);
  printf ("%d arguments read\n", argsread);

  printf ("Enter two floating-point numbers\n");
  argsread = scanf ("%f %f", &f, &g);
  printf ("%d arguments read\n", argsread);

}