单片机控制串口鼠标芯片范例，实现方向判断和数值计算功能.zip

#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; }