MAQUINA EXPENDEDORA-presentacion final

vídeo sobre la maquina expendedora

https://youtu.be/vmWIP9WFt-c

simulación usando el software proteus  y  ccs c compiler

programa

#include <16f877a.h> #fuses xt,nowdt #use delay(clock=4M) #define lcd_data_port  getenv("sfr:portd") #define lcd_enable_pin pin_d0 #define lcd_rs_pin pin_d1 #define lcd_rw_pin pin_d2 #define use_portb_kbd true #include  <lcd.c> #include  <kbd4x4_1.c> #include <string.h> int p; int t; float a; void vuelto(); void ActualizarSaldo(); void main() {       char k;    int x ;    p=0;    a=0;    t=0;    port_b_pullups (true),    output_low(pin_c5);    lcd_init();      kbd_init();       while (true)          {               k=kbd_getc ();               x=k-48;                                 while ((input (pin_a1)==0) & (input (pin_a0)==0))                     {                                                                lcd_gotoxy (1,1);                                  printf (lcd_putc,"gracias por preferirnos\n inserte moneda ");                                    //---------------------- ---------ESTO ES CUANDO NO HAY NADA NOS TIENE QUE DAR EL PRECIO----------------------------      //-----------------------------------galletas--------------------------------------                            k=kbd_getc ();                   if (k=='1')                             {                                                    lcd_gotoxy (1,1);                       printf(lcd_putc,"\f#:1 galletas");                            lcd_gotoxy (1,2);                       printf(lcd_putc," 1.60 soles ");                            delay_ms(1650);                            }                              //----------------------------------jugo---------------------------------------------------                    else if (k=='2')                             {                                                    lcd_gotoxy (1,1);                       printf(lcd_putc,"\f#:2 jugo");                            lcd_gotoxy (1,2);                       printf(lcd_putc," 1.50 soles ");                            delay_ms(1650);                            }        //----------------------------------gaseosa-------------------------------------------------------                   else if (k=='3')                             {                                                    lcd_gotoxy (1,1);                       printf(lcd_putc,"\f#:3 gaseosa");                            lcd_gotoxy (1,2);                       printf(lcd_putc," 2.00 soles ");                            delay_ms(1650);                            }       //----------------------------------chicle-------------------------------------------------------                  else if (k=='4')                             {                                                    lcd_gotoxy (1,1);                       printf(lcd_putc,"\f#:4 cicle");                            lcd_gotoxy (1,2);                       printf(lcd_putc," 0.50 soles ");                       delay_ms(1650);                            }     //-------------------------------------------------------------------------------------------------     //---------------------------fil del prceso cero-----------------------------------------                      }                        printf(lcd_putc,"\f" );                                                                         while (((input (pin_a0)==1) | (input (pin_a1)==1) ) & (t==0))                          {                          if (input (pin_a0)==1)                              {                              p=2;                                                          }                                                       else if (input (pin_a1)==1)                              {                              p=3;                              }                                                   lcd_gotoxy (1,1);                          printf (lcd_putc," Marqué numero ");                                            lcd_gotoxy (1,2);                          printf (lcd_putc," saldo: %i",p);                                                   k=kbd_getc ();          //---------------------------venta de los productos-----------------------------------------                           //-----------------------------------galletas--------------------------------------                                                   if (k=='1')                             {                                                    lcd_gotoxy (1,1);                       printf(lcd_putc,"\f#:1 galletas");                            lcd_gotoxy (1,2);                       printf(lcd_putc," 1.60 soles ");                       ActualizarSaldo();                                       a=p-1.60;                                            if(a!=0)                           {                                          vuelto();                                                       }                       delay_ms(1000);                        printf(lcd_putc,"\f" );                            t=2;                            }    //----------------------------------jugo---------------------------------------------------                            else if (k=='2')                             {                                                    lcd_gotoxy (1,1);                       printf(lcd_putc,"\f#:2 jugo");                            lcd_gotoxy (1,2);                       printf(lcd_putc," 1.50 soles ");                       ActualizarSaldo();                                       a=p-1.50;                                            if(a!=0)                           {                                         vuelto();                                                       }                       delay_ms(1000);                        printf(lcd_putc,"\f" );                        t=2;                            }        //----------------------------------gaseosa-------------------------------------------------------                             else if (k=='3')                             {                                                    lcd_gotoxy (1,1);                       printf(lcd_putc,"\f#:3 gaseosa");                            lcd_gotoxy (1,2);                       printf(lcd_putc," 2.00 soles ");                       ActualizarSaldo();                                       a=p-2.00;                                            if(a!=0)                           {                                         vuelto();                                                       }                       delay_ms(1000);                        printf(lcd_putc,"\f" );                        t=2;                            }        //----------------------------------chicle-------------------------------------------------------                             else if (k=='4')                             {                                                    lcd_gotoxy (1,1);                       printf(lcd_putc,"\f#:4 cicle");                            lcd_gotoxy (1,2);                       printf(lcd_putc," 0.50 soles ");                       ActualizarSaldo();                                       a=p-0.50;                                            if(a!=0)                           {                                         vuelto();                                                       }                       delay_ms(1000);                        printf(lcd_putc,"\f" );                        t=2;                            }     //-------------------------------------------------------------------------------------------------                                                }                                    } } //------------------------------------- funcionnes---------------------------- void ActualizarSaldo() {                         delay_ms(2000);                                                    output_high(pin_c6);                                                    delay_ms(1000);                                                       lcd_gotoxy (1,1);                         output_high(pin_b3);                                                                           printf(lcd_putc,"\f vendiendo \n......espere");                                                    delay_ms(1600);                                                    output_low(pin_c6); } void vuelto() {                         output_high(pin_c5);                                                    delay_ms(1000);                                                                              lcd_gotoxy (1,1);                       printf(lcd_putc,"\f vuelto:  ");                       lcd_gotoxy (1,2);                       printf(lcd_putc,"       %f",a);                                                    delay_ms(1600);                                                    output_low(pin_c5);   }