project on microcontroller based power factor improvent by static vars compensation

[amjadhussain]

dear fellows,

 

i am making project on  microcontroller based power factor improvent by static vars compensation as my final year project in b.sc electrical engineering

 

 

please help me in this regard

 

 

from

 

amjad hussain

[dagakshay]

nice project,

what you required from our side…

here i am pasting a link related to you project.. see if it help full for you

http://www.engineersgarage.com/microcontroller/8051projects/electronic-code-lock-with-password-using-at89c51-circuit

[amjadhussain]

hi dear fellows,,

 

 

i found a code of interfacing of ADC0808 with 89c51 here,this is the code

// Program to test ADC 0808. The output pins are connected to LED's. external clock is used for driving the ADC 0808.

#include<reg51.h>

sbit ale=P1^0;  //address latch enable

sbit oe=P1^3;  //output enable

sbit sc=P1^1;  //start conversion

sbit eoc=P1^2;  //end of conversion

sbit ADD_A=P1^4;  // Address pins for selecting input channels.

sbit ADD_B=P1^5;

sbit ADD_C=P1^6;

sfr input_port=0x80;

sfr output_port=0xA0;



void delay(unsigned int count)  // Function to provide time delay in msec.

{

int i,j;

for(i=0;i<count;i++)

for(j=0;j<1275;j++);

}



void main()

{

eoc=1;

input_port=0xFF;

ale=0;

oe=0;

sc=0;

while(1)

{

ADD_C=0;  // Selecting input channel 2 using address lines

ADD_B=0;

ADD_A=1;

delay(2);

ale=1;

delay(2);

sc=1;

delay(1);

ale=0;

delay(1);

sc=0;

while(eoc==1);

while(eoc==0);

oe=1;

output_port=input_port;

delay(2);

oe=0;

}

but it working when i put it into the keil ,it gives synatax error in its last 4 to five lines ,i am very worried about my project because time is very short so please help me and check this code ,and tell me why it is not working and send me its corrected form at

 

[email protected]

 

 

best regards

[amjadhussain]

here is program of lcd interfacing with 89c51,,,,,,

//Program to test LCD. Display single character "A"



#include<reg51.h>

#define cmdport P3

#define dataport P2

#define q 100

sbit rs = cmdport^0;  //register select pin

sbit rw = cmdport^1;  // read write pin

sbit e = cmdport^6;  //enable pin



void delay(unsigned int msec)  // Function to provide time delay in msec.

{

int i,j ;

for(i=0;i<msec;i++)

for(j=0;j<1275;j++);

}



void lcdcmd(unsigned char item)  //Function to send command to LCD

{

dataport = item;

rs= 0;

rw=0;

e=1;

delay(1);

e=0;

}



void lcddata(unsigned char item)  //Function to send data to LCD

{

dataport = item;

rs= 1;

rw=0;

e=1;

delay(1);

e=0;

}



void main()

{

lcdcmd(0x38);  // for using 8-bit 2 row mode of LCD

delay(100);

lcdcmd(0x0E);  // turn display ON for cursor blinking

delay(100);

lcdcmd(0x01);  //clear screen

delay(100);

lcdcmd(0x06);  //display ON

delay(100);

lcdcmd(0x86);  // bring cursor to position 6 of line 1

delay(100);

lcddata('A');

}

i picked the programme from here it is also not working and showing syntax error in last 4 to five lines,,,

 

 

what is problem with it please check it and send me the corrected programme at  

 

[email protected]

 

 

best regards

[amjadhussain]

 

 

following arethe error messages when i run the file of ADC0808 interfacing with 89c51(code given above)

 

 

 

wali.asm(43): error A9: SYNTAX ERROR
wali.asm(44): error A9: SYNTAX ERROR
wali.asm(45): error A9: SYNTAX ERROR
wali.asm(46): error A9: SYNTAX ERROR
wali.asm(47): warning A41: MISSING ‘END’ STATEMENT
Target not created

 

 

please check it why it is giving this problem

 

this is  not only in this case but also in case of code of lcd interfacing with 89c51  i.e same kind of error messages (giving syntax errors in last 4 to five lines)

 

regards

[dagakshay]

hello amjadhussain,

you have saved your file in .asm extension which is used to write assembly code.. but the code you have pased is written in C language so you getting error there…

see this link it migh be help full for you…

http://www.engineersgarage.com/forums/8051/how-create-new-project-keil

[amjadhussain]

hello

 

i have made circuit of interfacing of ADC0808 with 89c51given on

 

http://www.engineersgarage.com/microcontroller/8051projects/interface-ADC0808-using-clock-AT89C51-circuit

 

 

it is giving showing all leds off(i.e all ports connected to these leds are red) except which is connected at pin 28(it is showing blue ) of mc,so according to given pattern all leds are off except cpnnected at 28 pin of mc this pattern is not effected by varying the resistance (sensor) connected at pin 27 of ADC0808,i could not understand the problem,

 

please help me in this regard,guid me about the circuit i.e which kind of output it gives and how it is effected by change in resitance connected at pin 27 of ADC

 

please help me by providing the guidance,

 

i am  expecting usual kind response from u

 

 

regards

 

mjd hussain

[Author]

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