Discussion in "Project Help" started by    Ansh12    Mar 22, 2019.
Sun Apr 28 2019, 02:15 PM
#11


I made a minor change, it works in Proteus.
Try the attached hex code, just in case you have a compiler problem.

Are you sure you are getting a good signal into pin RB0 ?

if(INTF==1)
    {
         RD4 = 1;  // LED ON
         __delay_ms(1000); // 
         RD4 = 0;  // LED OFF
         __delay_ms(1000); // 
         
         INTF = 0;
    } 


ExperimenterUK



you are absolutely right. I reinstalled MPLABX IDE and my previous program is working now

Now all is working so I want to do little changes

I have one sensor when it triggered I want to start counting. How to do it ?

// CONFIG
#pragma config FOSC = HS        // Oscillator Selection bits (HS oscillator)
#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOREN = ON       // Brown-out Reset Enable bit (BOR enabled)
#pragma config LVP = OFF        // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
#pragma config CPD = OFF        // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
#pragma config WRT = OFF        // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
#pragma config CP = OFF         // Flash Program Memory Code Protection bit (Code protection off)
 
#define _XTAL_FREQ 20000000 //Specify the XTAL crystal FREQ
#include 
 
volatile unsigned int Counter;
char Trigger;
 
void main(void) 
{
    
    TRISB0=1;     // encoder as input
	
    TRISB1=1;     // Sensor as input
    TRISD1= 0;    // LED as output
    OPTION_REG=1;  // Set Rising Edge Trigger 
    INTCON = 1;   // Enable The Global Interrupt
    INTE = 1;     // External Interrupt Enable (not INTF)
    GIE=1;
    Counter = 0;  //initial values at start up
    Trigger = 0;
    
    while (1)
    {
        if(Trigger == 1)
        {
             Trigger = 0;
             Counter = 0;
            
             RD1 = 1;  // LED ON
             __delay_ms(1000); // 
             RD1 = 0;  // LED OFF
             __delay_ms(500); 
        }
    }
 
}
 
void interrupt isr(void)
{  
    if(INTF==1)
    {
        INTF = 0;  // Clear interrupt flag
        Counter++;    // add 1 to the Counter
        if(Counter == 30) 
        Trigger = 1;
    } 
}




[ Edited Sun Apr 28 2019, 02:17 PM ]

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Wed Aug 05 2020, 11:56 AM
John Mathews
Hey - I was checking out your site and I’m impressed with how clean and professional it looks.
Thu Jun 11 2020, 06:27 AM
anudee
sir could please send the code for I2C and wifi interfacing with 8051
scena
Tue May 19 2020, 10:29 PM
Does anyone have microcontroller programming software for STC15F104W (core 8051, 4 k, 128 byte, 6 I/O pin, UART ... DIL8), that works?
Sat May 02 2020, 07:38 PM
Tamu Gurung
Hi I am looking for a assembly language program for a digital decimal counter. Time counts max limit of 2 mins starting from 2.00 mins and ending at 0.00. time is to be displayed on 4 7-segment LED displays. Edsim51 simulator to be used. Thanks
Wed Mar 25 2020, 01:39 PM
Tajammul
Sir kindly send the code file i2c for 8051
ExperimenterUK
Fri Mar 13 2020, 10:36 PM
@ Rohitnani,ABEBE..which project ?
Fri Mar 13 2020, 12:55 PM
ABEBE
how can get hadwere of this project
Rohitnani
Sat Mar 07 2020, 05:11 PM
Sir, Could you please send me the zip file input password....
Wed Feb 26 2020, 04:58 PM
Peter Parker
Is it possible to send multiple messages using only 1 GSM module?
Sat Feb 01 2020, 10:12 AM
Pearl Olin
Hello,

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