Getting nybbles

[mikew01]

Hi, I need to split up a byte value into two nybbles, I understand bit
shifting is the ideal method to perform this task.

Could someone explain how to do this please.

TIA

 

[Daniel Pitts]

Hi, I need to split up a byte value into two nybbles, I understand bit
shifting is the ideal method to perform this task.

Could someone explain how to do this please.

TIA

Well, a nibble is 4 bits, and a byte is 8 bits.

You need to mask part of the byte using binary and (&). 00001111 in
binary = 15 dec and 0xF hex.

lowNib = myByte & 0xF;

Then you need to make the high nibble in myByte the low nibble:

highNib = (myByte >> 4) & 0xF;

Hope this explains it. Good luck,
Daniel.

 

[mikew01]

Thanks for your help.