Motorbike cockpit (km/h, odometer, fuel gauge, bat level,RTC) using C52

[lakshmeesha]

hello,

 

i don’t have that much programming baground, im having MCA in this sem oly. however, i’m going to do Digital Cockpit for bike, it have to show speed, distence, fuel gauge, battery level and Time In 128*64 GLCD display

 

 

im having a plan like this

 

1) speedometer & distence meter : hall sensor

2) RTC : DS—- something

3)fuel and battery meter : ADC

>>im not able reach initial stage also : counting input pulse per second and showing it in LCD display  

 

code is:

 

 

 #include<reg52.h>

 #include<stdio.h>

 #include<math.h>

#define cmdport P1

#define dataport P2

#define pulse P3

#define op P0

#define q 100

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

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

sbit e = cmdport^2;  //enable pin

sbit n = pulse^4;

sbit rst= pulse^1; 

 

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 lcdini()  //Function to initialize the LCD

{

lcdcmd(0x38);  

delay(2);

lcdcmd(0x0F); 

delay(2);

lcdcmd(0x82);  //Set cursor to blink at line 1 positon 2

delay(2);

}

 

void countval(unsigned int x)  //hex to decimal counter (not sure it does)

{          

unsigned int j,l,k,m=1;

int b[4];

 

l= x&&0XF0; //masking higher bit (anding)

k= x&&0x0F; // masking lower bit

j= ((l*16)+(k*1)); //calculation higher bit * 16+lowerbit * 1 

 

sprintf(b,”%d”, j); //frome some forum post to display values in LCD

 

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

delay(100);

lcdcmd(0x01);  //clear screen

delay(100);

lcdcmd(0x06);  //display ON

delay(100);

lcdcmd(0X80);

lcddata(‘v’);

lcdcmd(0X81);

lcddata(‘=’);

{lcdcmd(0x82); //putting decimal value to LCD

lcddata(b[m]);

}

}

 

void main()

{

rst=1;

while (rst==1) //for continous looping i used this

{

unsigned int r=0,v=0;

 

lcdini()  ;

n=1;   //input pin p3.4

TMOD=0X15; //is timer & another is counter

TL0= 0;

TH0=0;

TR0=1;

for (;r<28;r++) //28 times to 1 sec ( from some book that is in assembly language i converted to C )

{

TL1=0;

TH1=0;

TR1=1;

 

while(TF1==0)

TF1=0;

TR1=0;

}

v=TL0; //moving count value to v.. CONFUSED with TL & TH value combination

countval(v);

delay(100);

v=TH0;

countval(v);

return ;

}

}

 

Really need help with this project…… PLZZZZZZZZZZ

 

[AJISH ALFRED]

Hi Lakshmeesha,

Very nice project. Tell us more details about the output you currently have in the LCD. If possible please post an image of the same so that we can identify what could be issue.

[lakshmeesha]

heyyy.. thanks for replay…

 

I’m not abel to convert 16 bit TH & TL hex values into decimal, and how to put them on LCD,, im getting nothing in LCD 

 

wysiwyg_imageupload:8513:

[lakshmeesha]

one section is over (ADC)….. 1)fuel meter in ltrs, 2)kilometer aproximation for that much fuel, 3)Engin temp display, 4) daylight display

 

remaining >  KMPH meter & trip meter

 

wysiwyg_imageupload:8515:

[lakshmeesha]

finally its over……. EEPROM interfacing only remaining,,, im not able to do that one only

wysiwyg_imageupload:8592:

[waqi]

Very nice project, can you show me the picture of your project.

[lakshmeesha]

now it is simulated, i need to purchase every hardware part, after hardware conversion i will show.

 

[AJISH ALFRED]

Hi Lakshmeesha,

Nice project and so far you did a great job. Now it would be easy for you to make the hardware. If you face any issue with it please post here.

Please don’t forget to share the details of the project with us so that we can also learn more.

[lakshmeesha]

ha ha…

kind of completed,

 

instead of 89C51 i’m planning to use 89C51RD2, (i heard RE2 having inbuilt EPROM)

saw 100000000 of errors BTW. 

but still unable to interface EPROM, other than that all is working properly.

if i interfaced EPROM it will shoe “ADDRESS OVERFLOW ERROR”

for that we have to use XDATA, that is not working  , i need EPROM to store last trip value.

any ideas????

 

finally

wysiwyg_imageupload:8595: last line il LOL , 

 

 

 

 

 

 

 

 

 

 

 

 

wysiwyg_imageupload:8596:

                            speed ||  trip||

distence aproximation || fuel remaining|| engine temperature || light sense

battery level|| fuel tap sense ( Mains,Reserve,Empty)|| mailge -( distence/(init fuel – fuel at that distence))

 

[lakshmeesha]

Thanxxx…..

 

its kind of over,

but im failed to interface EPROM to it, showing overflow error,,

[AJISH ALFRED]

Hi,

89c51 don’t have a built-in EEPROM, you can interface external serial EEPROMs using I2C.

[lakshmeesha]

yes,, i did it,, finally its running with eprom (ic2), i ‘m saving trip value and top speed in it. now planning to interface GLCD to it, already hex files reached 22kb, and getting address overflow with some more variables

 

[lakshmeesha]

hey….

 

would you suggest me a good sensor for wheel sensing, i must counts more that 100hz (100 pulse),the wheel having 5 alloy sticks, it will disturb ir signal and have to get pulse from it,  is IR sensors with amplifier is ok??

[AJISH ALFRED]

Hi,

Magnetic Reed Sensor will do??

[lakshmeesha]

i need to attach magnet to wheel right??

on that fast magnet will thrown away…..

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