Extracting Bits from Variables in PIC Microcontrollers

[Magna Visus]

Hello guys!

The following question is related to the P18F2520 series.

Suppose you have 2 defined variables var1 and var2 each containing 8 bits from a certain source.

However I only need the 4 least significant bits from var1 and the 4 most significant bit from var 2 in order to fill up a new variable var3.

Any clue how to do this? (I need a command analogue to MOVFF but regarding moving single bits)

Thank you!

 

[berkeman]

Hello guys!

The following question is related to the P18F2520 series.

Suppose you have 2 defined variables var1 and var2 each containing 8 bits from a certain source.

However I only need the 4 least significant bits from var1 and the 4 most significant bit from var 2 in order to fill up a new variable var3.

Any clue how to do this? (I need a command analogue to MOVFF but regarding moving single bits)

Thank you!

Mask off the unwanted bits to 0 and then OR the two bytes...

 

[Magna Visus]

Ah didn't think about using logical operators for this task. Thought that a movbit function exist.
Thanks for your answer I'll definitely use it!