ctrl.c

单片机控制串口鼠标芯片范例

#include <reg2051.h>
#include <absacc.h>
#include <stdio.h>

unsigned char code *systemPasswordCode_1="Hello world !! Take me to your heart !!";
unsigned char code *systemPasswordCode_2="Let me see,this program is very good !!";
unsigned char code *systemPasswordCode_3="Don't you see this program ? I love you !!"; 

#define PasswordCode CBYTE[0x7ff]

//=================================================

//	const unsigned char code PasswordCode=0x7b;

//=================================================	

unsigned char stepNum=0;
unsigned char P1_buffer=1;

extern unsigned int getnumber (void);
extern void output (unsigned int);

void func0 (void){;}

void func1(void){;}

void wait (void)  {                   /* wait function */
  ;                                   /* only to delay for LED flashes */
}

void Set_1 (void)  {
  unsigned int i;                     /* Delay var */
  unsigned char j;                    /* LED var */

  while (1) {                         /* Loop forever */
    for (j=0x01; j< 0x80; j<<=1)  {   /* Blink LED 0, 1, 2, 3, 4, 5, 6 */
      P1 = j;                         /* Output to LED Port */
      for (i = 0; i < 10000; i++)  {  /* Delay for 10000 Counts */
       wait ();                       /* call wait function */
      }
    }

    for (j=0x80; j> 0x01; j>>=1)  {   /* Blink LED 6, 5, 4, 3, 2, 1 */
      P1 = j;                         /* Output to LED Port */
      for (i = 0; i < 10000; i++)  {  /* Delay for 10000 Counts */
       wait ();                       /* call wait function */
      }
    }
  }
}

void Set_2(void) {

/* INITIALIZE SERIAL INTERFACE TO 2400 BAUD @12MHz */
  SCON = 0x52;    /* SCON */
  TMOD = 0x20;    /* TMOD */
  TCON = 0x69;    /* TCON */
  TH1 =  0xf3;    /* TH1 */

  printf("MAIN PROGRAM CALLS A FUNCTION IN BANK 0 \n");
  func0();
  printf("MAIN PROGRAM CALLS A FUNCTION IN BANK 1 \n");
  func1();

  while(1);
}

void main(void)
{	
	P1=0xff;
	P1_buffer=P1;

	P3=0x00;

	while(1)
	{
		while(P1_buffer==PasswordCode)
		{
			P3_0=0;
			P3_1=1;

//			P1_buffer=P1;
		}

		P1_buffer=P1;

		while(P1_buffer!=PasswordCode)
		{
			P3_0=1;
			P3_1=0;

			P1_buffer=P1;
		}
	}
	Set_1();
	Set_2();

	return;
}