Enable weak-pulls 12F675

[medelec35]

what is c code to enable weak-pull ups in option register, without changing any other bits of register.
I believe its a shift left command with a 1 and amount of places required i.e
option_reg (1<<7) or somthing like that
or is it best to mask unwanted changes i.e
option_reg = option_reg & 0b01111111
please bear in mind, my C knowledge is as weak as the pic pullups

[Benj]

Hello

The easiest option is probabl;y to use the set_bit funtion.

Here is some example code where 7 is the bit number of the register. Bits of registers are numbered 0 - 7.

set_bit(option_reg, 7);

If you wished to clear a bit then here is the function.

clear_bit(RegisterName, BitName Or BitNumber);

[medelec35]

Thanks Ben,
That is a nice way of alterting option reg.