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Timer 0

This code configures a microcontroller to read temperature data from an ADC, display it on an LCD screen, and toggle an LED using a timer interrupt. It initializes the ADC, LCD, and timer peripherals. It then enters a loop to continuously read the ADC channel, display the temperature value, and toggle the LED via the timer interrupt.

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andres felipe
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98 views2 pages

Timer 0

This code configures a microcontroller to read temperature data from an ADC, display it on an LCD screen, and toggle an LED using a timer interrupt. It initializes the ADC, LCD, and timer peripherals. It then enters a loop to continuously read the ADC channel, display the temperature value, and toggle the LED via the timer interrupt.

Uploaded by

andres felipe
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as TXT, PDF, TXT or read online on Scribd
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#include <16f877a.

h>
#device adc=10 // Usa resoluci�n de 10 bits
#fuses HS, NOWDT,NOPROTECT,NOPUT
#use delay(clock=20M)
#include <lcd.c> //incluye librer�a del LCD
#use rs232 (baud=9600, parity=N, xmit=pin_c6, rcv=pin_c7, bits=8)//230400 baud
#define use_portd_lcd TRUE //Configuraci�n puerto D control lcd
#USE STANDARD_IO(A)
#USE STANDARD_IO(B)
#USE STANDARD_IO(C)
#USE STANDARD_IO(D)

float32 A=0.0;
float32 V=0.0;
float32 Kg=0.0;
INT16 DATO=0;
FLOAT DATO1;
VOID TEMPERATURA()
{
SET_ADC_CHANNEL(0);
DELAY_MS(500);
DATO=READ_ADC();
DATO1=DATO*1;
DELAY_MS(500);
PRINTF("%4.1f\r\n",DATO1);
}
#INT_TIMER0
void Timer0_isr(void)
{
output_toggle(PIN_B0);
set_timer0(250);
clear_interrupt(INT_TIMER0);

}
void main()
{
//set_tris_b(0XF0);
setup_adc_ports(AN0);
setup_adc(ADC_CLOCK_DIV_2);
enable_interrupts(INT_TIMER0);
enable_interrupts(GLOBAL);
clear_interrupt(INT_TIMER0);
set_timer0(250);
setup_timer_0(T0_INTERNAL|T0_DIV_256);

lcd_init(); //Se inicia el LCD

lcd_putc("\f Bascula \n"); // Saca texto


lcd_putc(" Electronica "); // Saca texto
delay_ms(2000);

lcd_putc("\f"); // Limpia pantalla

lcd_putc("DATO\n"); // Saca texto


delay_ms(1000);

//lcd_gotoxy(13,2); // Acomoda cursor LCD


//lcd_putc("Kg");
//delay_ms(50);
// setup_ccp1(CCP_PWM);
//setup_timer_2(T2_DIV_BY_1, 255, 1);

//setup_adc (adc_clock_internal);

//setup_adc_ports (0);

//set_adc_channel (0); // Elige canal a medir RA0

while(true)
{
TEMPERATURA();

//lcd_gotoxy(4,2); // Acomoda cursor LCD


//delay_ms(10); // Limpia ese sector de pantalla
//lcd_gotoxy(4,2); // Acomoda cursor LCD
//set_pwm1_duty(0);
//A=read_adc();

//Kg=(A/10)-15.2;
// set_pwm1_duty(100);

//lcd_gotoxy(1,2); // Acomoda cursor LCD

// printf(lcd_putc,"%02.3f",kg);
// printf("%4.1f\r\n",kg);

}
}

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