State-machine-clock.rar_state-machine_状态机_状态机 单片机

/********************************************* File name : Menu_test1.c Chip type : AT89C52 Program type : Application Clock frequency : 11.0592 MHz Memory model : Small External SRAM size : 0 Data Stack size : 256 *********************************************/ #include <reg52.h> #define uint unsigned int #define uchar unsigned char #define key_input P2 #define key_mask 0xc0 #define key_no 0 #define key_k1 1 #define key_k2 2 #define key_state_0 0 #define key_state_1 1 #define key_state_2 2 uchar code led_7[10]= {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F}; uchar code position[6]= {0xfe,0xfd,0xfb,0xf7,0xef,0xdf}; uchar time[3],time_set[3]; uchar dis_buff[6]; uchar time_counter,key_stime_counter; uchar clock_state = 6,return_time; bit point_on,set_on,time_1s_ok,key_stime_ok; void timer_init(void) { TMOD=0x01; TH0=0xf8; TL0=0xcd; EA=1; ET0=1; TR0=1; } void display(void) { static uchar posit=0; P2 = 0xff; P0 = led_7[dis_buff[posit]]; if (set_on && (posit==clock_state)) { P0= 0x00; } if (point_on && (posit==2||posit==4)) { P0 |= 0x80; } P2 = position[posit]; if (++posit >=6 ) { posit = 0; } } void time0_int() interrupt 1 using 1 { TH0=0xf8; TL0=0xcd; display(); if (++key_stime_counter >=5) { key_stime_counter = 0; key_stime_ok = 1; if (!(++time_counter % 25)) { set_on = !set_on; } if (time_counter >= 100) { time_counter = 0; time_1s_ok = 1; } } } void time_to_disbuffer(uchar *time) { uchar i,j=0; for (i=0; i<=2; i++) { dis_buff[j++] = time[i] % 10; dis_buff[j++] = time[i] / 10; } } uchar read_key(void) { static uchar key_state = 0,key_press; uchar key_return = key_no; key_press = key_input & key_mask; switch (key_state) { case key_state_0: if (key_press != key_mask) { key_state = key_state_1; } break; case key_state_1: if (key_press == (key_input & key_mask)) { if (key_press == 0x40) { key_return = key_k1; } else if (key_press == 0x80) { key_return = key_k2; } key_state = key_state_2; } else { key_state = key_state_0; } break; case key_state_2: if (key_press == key_mask) { key_state = key_state_0; } break; } return key_return; } void main(void) { uchar key_temp,i; timer_init(); P2=0xff; time[2] = 23; time[1] = 58; time[0] = 55; while (1) { if (time_1s_ok) { time_1s_ok = 0; point_on = ~point_on; if (++time[0] >= 60) { time[0] = 0; if (++time[1] >= 60) { time[1] = 0; if (++time[2] >= 24) { time[2] = 0; } } } if ((++return_time >= 20) && (clock_state != 6)) { clock_state = 6; } if (clock_state == 6) { time_to_disbuffer(time); } } if (key_stime_ok) { key_stime_ok = 0; key_temp = read_key(); if (key_temp) { return_time = 0; if (key_temp == key_k1) { if (++clock_state >= 7) { clock_state = 0; } if (clock_state == 0) { for (i=0; i<=2; i++) { time_set[i] = 0; } time_to_disbuffer(time_set); } if (clock_state == 6) { for (i=0; i<=2; i++) { time[i] = time_set[i]; } time_to_disbuffer(time); } } if ((clock_state != 6) && (key_temp == key_k2)) { if (clock_state%2) { time_set[clock_state/2] += 10; } else { if ((time_set[clock_state/2] % 10) == 9) { time_set[clock_state/2] -= 9; } else { time_set[clock_state/2]+=1; } } if (time_set[0] >= 60) { time_set[0]-= 60; } if (time_set[1] >= 60) { time_set[1]-= 60; } if (time_set[2] >= 24) { time_set[2]-= 10; } time_to_disbuffer(time_set); } } } } }