单片机流程图

.单片机总流程图开始定义 i/o 对象，变量（n，j， i）定义条形码定时器，中断服务初始化8255 初始化函数nn=o？yhello显示函数npb8255=0xefyop51 显示函数099 显示函数定时器函数iffh结束;.主函数程序#include #include#define uchar unsigned char#define uint unsigned int#define osc_freq12000000#define 10ms(65536 - osc_freq/(12000000/9970) #define com8255 xbyte0xfff3#define pa8255xbyte0xfff0 #define pb8255xbyte0xfff1 #define pc8255xbyte0xfff2uchar code tab=0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6; uchar code dis_hello=0x89,0x86,0xc7,0xc7;uchar code dis_op51=0xc0,0x8c,0x92,0xf9;uchar code dis_code=0xcf,0xa4,0xcf,0xa4; uchar uccnt_10ms=99;uchar i=0;uchar j=0; uchar n=0; uchar led1; uchar led2;sbit p2_4=p24; sbit p3_7=p37; sbit p1_0=p10; sbit p1_1=p11; sbit p1_2=p12; void disp_op51 (); void disp_hello(); void set_init_xint();void set_init_timer(); void disp_t();void delayx1ms(uint count); void disp_8255();voidmain()for(;)set_init_xint(); set_init_timer(); disp_8255();/uccnt_10ms =99;/ucled1 = 6;/ucled2 = 8;.if ( n=1 )for(;)disp_hello(); if (pb8255=0xef)for(;)disp_op51 () ; disp_t();for(i=0;i0xff;i+);for(i=0;i0xff;i+);.定时器 t0 流程图开始定时器 t0 初始化植入初值tr0=1 ？y定时器 t0 计时重装初值nuccnt_10ms=200 ？yuccnt_10ms=0定时器中断服务函数中断返回结束;.定时器初始化函数程序void set_init_timer()tmod=0x01;th0 = 10ms/256; tl0 = 10ms%256; ea=1;et0=1;定时器中断服务函数程序run_time0(void) interrupt 1 using 2tr0 = 0;th0 = 10ms/256; tl0 = 10ms%256; tr0 = 1;uccnt_10ms+;if( uccnt_10ms=200 ) /1s uccnt_10ms = 0; led1+ ;if( led1=10)/1s 时间到更新显示缓冲值led1 = 0;led2+; if(led2= 10)led2 = 0;.外部中断 0 流程图开始外部中断 0 初始化是否有中断请求？y中断服务程序tr0=1 ， n+中断返回结束;.外部中断初始化函数程序void set_init_xint()it0=1; ex0=1; ea=1;定时器中断服务函数程序run_xint0(void) interrupt 0 using 1n+; tr0=1;.独立式按键流程图开始定义 abc 口8255 入口地址8255 初始化pb8255=0xef ？（ k12）yop51 函数099 函数ni0xff？y结束;.8255 定义入口#define com8255 xbyte0xfff3 #define pa8255xbyte0xfff0 #define pb8255xbyte0xfff1 #define pc8255xbyte0xfff2sbit p3_7=p37; sbit p1_0=p10; sbit p1_1=p11; sbit p1_2=p12;8255 初始化函数程序void disp_8255() p3_7=0; p1_0=0; p1_1=1; p1_2=0;com8255=0x82;.hello显示函数程序void disp_hello()/hello显示函数scon = 0x00; sbuf=0xfc; p2_4=0;while(!ti); ti = 0; p2_4=1; p2_4=0; sbuf=0x02;while(!ti); ti = 0; p2_4=1;p1=0x7a; p2=dis_hello0 ;delayx1ms(5); p1=0xba; p2=dis_hello1 ;delayx1ms(5); p1=0xda; p2=dis_hello2;delayx1ms(5); p1=0xea; p2=dis_hello3;delayx1ms(5);.op51 显示函数程序voiddisp_op51 ()p1=0x7f;p2=dis_op510 ; delayx1ms(5); p1=0xbf;p2=dis_op511 ; delayx1ms(5); p1=0xdf;p2=dis_op512 ; delayx1ms(5); p1=0xef;p2=dis_op513 ;delayx1ms(5);099 显示函数程序void disp_t()scon = 0x00;sbuf=tabled2; p2_4=0;while(!ti); ti=0; p2_