Bitwise operators and registers

[kitarapso]

Hello!

I wonder, how can i tweak ON OFF a single bit in register REGx with adress 0x13001200 and write the value back to the same register.

Ty.

[kbw]

Use bitwise OR to switch on a bit and AND with NOT of bit to switch off.

[kitarapso]

like this?

REGx = REGx | BITx //turn on
REGx = REGx & ~BITx //turn off 

[bartoli]

Yes, if you define BITx as (1<<x)

[McSaks]

Or:

REGx |= BITx //turn on
REGx &= ~BITx //turn off 

It should be evaluated a little faster, I think.

[kbw]

Faster?