电光源跟踪系统软件设计 - 图文(10)

ShowState(); }

//中断0:加速程序

void SpeedUp() interrupt 0 {

if(RunSpeed>=12)

RunSpeed=RunSpeed-2; DoSpeed(); P1=0x01; cmd_wr(); ShowState(); }

//中断1:减速程序

void SpeedDowm() interrupt 2 {

if(RunSpeed<=100)

RunSpeed=RunSpeed+2; DoSpeed(); P1=0x01; cmd_wr(); ShowState(); }

int delay() //判断LCD是否忙 {

int a; start:

RS=0; RW=1; E=0;

第 42 页

for(a=0;a<2;a++);

E=1; P1=0xff; if(P1_7==0) return 0; else goto start; }

void inti_lcd() //设置LCD方式 {

P1=0x38; cmd_wr(); delay();

P1=0x01; //清除 cmd_wr(); delay();

P1=0x0f; cmd_wr(); delay();

P1=0x06; cmd_wr(); delay();

P1=0x0c; cmd_wr(); delay(); }

void cmd_wr() //写控制字 {

RS=0;

第 43 页

RW=0; E=0;

E=1; }

void show_lcd(int i) //LCD显示子程序 {

P1=i; RS=1; RW=0; E=0; E=1; }

void ShowState() //显示状态与速度 {

int i=0;

while(SpeedChar[i]!='\\0') {

delay();

show_lcd(SpeedChar[i]); i++; }

delay();

P1=0x80 | 0x0d; cmd_wr();

i=0;

while(SPEED[i]!='\\0') {

delay();

show_lcd(SPEED[i]); i++; }

第 44 页

delay(); P1=0xC0; cmd_wr();

i=0;

while(StateChar[i]!='\\0') {

delay();

show_lcd(StateChar[i]); i++; }

delay();

P1=0xC0 | 0x0A; cmd_wr();

i=0;

if(RunState==RIGHT_RUN) while(STATE_CW[i]!='\\0') {

delay();

show_lcd(STATE_CW[i]); i++; } else

while(STATE_CCW[i]!='\\0') {

delay();

show_lcd(STATE_CCW[i]); i++; } }

void clock(unsigned int Delay) //1ms延时程序 { unsigned int i;

for(;Delay>0;Delay--) for(i=0;i<124;i++); }

第 45 页