binary input to pic microconroller

[pisces12]

hi...

how to convert binary input to pic microcontroller to decimal value..for example the input is 1100100 = 200..i'm using picc compiler..tq

 

[matbob]

Hi pisces12,

Tell us how you are giving the binary input, serial or parallel? If it is parallel, input the 8bits to a single port and read the port value to a variable. If you are not going to display the value, there is no need of conversion. Its a matter of how you visualize the content of the variable. You can think it as a binary or decimal or hexadecimal....

 

[pisces12]

sorry, but can i ask. what do you mean by serial or parallel input?i don't need to display it, but i'm going t use the value in my calculation.

 

[matbob]

Hi pisces12,

If you are using it in calculations then you may use it without any modifications.

For example:

unsigned short int x; //x is an 8bit variable
.
.
.
x=PORTB;//read 8bit value from portb to x

now, if the 8bit value input on portb was = 1100100

then x= 1100100 binary == 100 decimal == 64 hexadecimal

Only the representation of value is changing in the above cases and the magnitude remains the same.

 

[heina]

uhm..HI!
I happened to be thinking about the same thing.:-D
like,

How would I put into code an 8 bit binary as input and convert it to decimal?

so far, I am planning to experiment with switches. I assigned PORT B as input and I declared a variable of type byte where the value would be stored...and I used this code:


a = ( ( (PORTB and 0xF0) div 10) << 4) + (PORTB and 0x0F)

where a is of type byte
oh, I'm using MikroBasic.
I've seen this code on another topic, I just tried it out and see what happens.lol. Nothing much happened. I converted the byte to string to be able to see its output on the LCD..it produced : 25,23, -19 regardless if I switched on/off other switches on PortB.

any ideas how I can do this?
help would be very much appreciated.

Thank you!

Sincerely,
heina[/b]