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Timer_1 setup in PIC16F877A

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jean12

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Hello there I would like to setup timer1 of PIC16F877A for creating a delay of 3 seconds,I understand that it has to be configured as counter
but I don't know any thing more on it ;can anyone help me??

So I have to edit the following codes for making an ON/OFF switch:
PHP: 
#include "16f877a.h" 
#device adc=10 
#fuses HS,NOWDT,NOLVP,NOCPD,NODEBUG
#use delay(clock=4M) 

 

float volt, oldval,volt1 ;

int count=0

#int_timer2

void timer2_isr(void) 
{
 //clock=clock++;
x=get_timer2();
set_timer2(0);
   } 

 
void main()
{
    set_tris_a(0xff);
    set_tris_b(0x00);
    set_tris_c(0x00);
     set_tris_d(0x00);
    
//Analog module configuration for reading the voltage from the PIN_AN0
    setup_comparator(NC_NC_NC_NC);
    setup_adc(ADC_CLOCK_INTERNAL);
    setup_adc_ports(AN0);
    set_adc_channel(0); 
      setup_vref(FALSE);

//Interrupt uses for counting 3 seconds

setup_timer_2(T0_INTERNAL | T0_DIV_BY_8);
  enable_interrupts(INT_TIMER2);
  enable_interrupts(GLOBAL); 
    
    while(1)
    {
        delay_us(20);
        read_adc(adc_start_only);
        delay_us(100);
        volt = read_adc(adc_read_only);
        volt = volt * 30.0/ 1023.0;
                
      if(volt>1)

                {
delay_ms(3);
output_high(PIN_D0);

	}
else if((x<=125)&&(volt>1) //turn off the led on D1 
{
output_high(PIN_D0);


}
 }    
}
Thanks.

Please.Help
 
Last edited:

Have you saw my question?can you please hep me with codes??
I want to use a timer1 as counter for just creating a delay in which the signl from AN0 be tested with that tie?
Thanks,please help.
 

You should configure Timer1 as Timer and not Counter for creating delays. You can use a variable to count the no. of interrupts which can be used for creating delays. Post your CCS C project files. I will fix the code.
 

I want to implement the clap switch with that so,I think I sent a project which does not have the interrupts in the codes;waiting for help in order to use them.

I possible use the codes on https://www.edaboard.com/threads/298282/

Thanks,please help.
 

Thanks I saw the codes I am gonna testing I let you know the result.

Thanks.
 

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