7seg_6digit.rar_it

//6 digit clock //Using timer1 16bit counter interrupt // PIC16F627A or PIC16F628 // Internal Clock 4MHz #define MODE PORTB.F4 #define SET PORTB.F5 #define Sec_port_l PORTA.F6 #define Sec_port_h PORTA.F4 #define Min_port_l PORTA.F3 #define Min_port_h PORTA.F2 #define Hr_port_l PORTA.F1 #define Hr_port_h PORTA.F0 #define Blink PORTA.F7 #define HTMR1 0x80 #define LTMR1 0x00 typedef unsigned short uns8; uns8 i; uns8 hr_h; uns8 hr_l; uns8 min_h; uns8 min_l; uns8 sec_h; uns8 sec_l; uns8 tick; uns8 myTimer; uns8 setting_time; void setup (); void set_time (); void show_time (); void display (uns8 digit); void blink_digit (uns8 digit); void check_bt (); //void check_bt(); //chech button void interrupt () { PIR1.TMR1IF = 0; // clears TMR1IF TMR1H = HTMR1; tick = 1; Blink = 1; sec_l ++; if(sec_l>9){ sec_l = 0; sec_h++; } if(sec_h>5){ sec_h=0; min_l++; } if(min_l>9){ min_l = 0; min_h++; } if(min_h>5){ min_h = 0; hr_l++; } if(hr_l>9){ hr_l = 0; hr_h++; } if(hr_h >2){ hr_h = 0; } if(hr_h >=2 && hr_l>3){ hr_h = 0; hr_l = 0; } } void main () { setup (); //Set time hr_h = 1; hr_l = 2; min_h = 3; min_l = 4; sec_h = 5; sec_l = 6; show_time (); setting_time = 1; set_time(); while (1) { //blink_digit(); if (tick) { tick = 0; show_time (); Delay_ms (300); Blink = 0; } check_bt (); } } void setup () { tick = 0; //Digital output on PORTA CMCON = 0x07; //Input buttons + external clock TRISB = 0xB0; PORTB = 0x00; TRISA = 0x00; PORTA = 0x00; //Internal Clock 4MHz PCON.OSCF = 1; // Prescaler 1:1 external clock T1CON = 0x0F; PIE1.TMR1IE = 0; // disable interupt to stop the clock INTCON = 0xC0; // Set GIE, PEIE TMR1L = LTMR1; TMR1H = HTMR1; // TMR1 starts at 0x0BDC = 3036 to make TMR1 counts to 62500 and // overclows in every 0.1 sec // Math: 1/500000*8*62500 = 0.1 // 1/5000000 : time for 20MHz crystal (internal clock will be 20/4 = 5MHz) // 8: prescaler // 62500: TMR1 counts to 62500 // Counting number of overflows to 10 will get 1 sec. } void show_time () { display (1); display (2); display (3); display (4); display (5); display (6); } void display (uns8 digit) { switch (digit) { case 1 : PORTB = hr_h; Hr_port_h = 1; Hr_port_h = 0; break; case 2 : PORTB = hr_l; Hr_port_l = 1; Hr_port_l = 0; break; case 3 : PORTB = min_h; Min_port_h = 1; Min_port_h = 0; break; case 4 : PORTB = min_l; Min_port_l = 1; Min_port_l = 0; break; case 5 : PORTB = sec_h; Sec_port_h = 1; Sec_port_h = 0; break; case 6 : PORTB = sec_l; Sec_port_l = 1; Sec_port_l = 0; break; } } void blink_digit (uns8 digit) { switch (digit) { case 1 : PORTB = 0xFF; Hr_port_h = 1; Hr_port_h = 0; Delay_ms (100); display (1); Delay_ms (100); break; case 2 : PORTB = 0xFF; Hr_port_l = 1; Hr_port_l = 0; Delay_ms (100); display (2); Delay_ms (100); break; case 3 : PORTB = 0xFF; Min_port_h = 1; Min_port_h = 0; Delay_ms (100); display (3); Delay_ms (100); break; case 4 : PORTB = 0xFF; Min_port_l = 1; Min_port_l = 0; Delay_ms (100); display (4); Delay_ms (100); break; case 5 : PORTB = 0xFF; Sec_port_h = 1; Sec_port_h = 0; Delay_ms (100); display (5); Delay_ms (100); break; case 6 : PORTB = 0xFF; Sec_port_l = 1; Sec_port_l = 0; Delay_ms (100); display (6); Delay_ms (100); break; } } void set_time () { i = 1; while (setting_time) { blink_digit (i); while (SET == 0) { Delay_ms (5); switch (i) { case 1 : hr_h ++; if (hr_h > 2) { hr_h = 0; } break; case 2 : hr_l ++; if (hr_l > 9) { hr_l = 0; } if (hr_h >= 2 && hr_l > 3) { hr_l = 0; } break; case 3 : min_h ++; if (min_h > 5) { min_h = 0; } break; case 4 : min_l ++; if (min_l > 9) { min_l = 0; } break; case 5 : sec_h ++; if (sec_h > 5) { sec_h = 0; } break; case 6 : sec_l ++; if (sec_l > 9) { sec_l = 0; }