[ARM] "io0pin&(3<<5)"

[Munna Kumar]

How to use & and | operater in embeded c?
Does it means something if i write IO0PIN&(3<<6)?
If yes tell me.
How to use & operater if i want to check the status of pin 4 and 7 simultaneously ? Tell me seperately to check for 0 and 1.

 

[Easyrider83]

Re: &quot;io0pin&amp;(3&lt;&lt;5)&quot;

io0pin |= (1<<5); // set bit #5
io0pin &= ~(1<<5) // clear bit #5
| - logical OR
& - logical AND
~ - inversion

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if (io0pin & (1<<4) && io0pin & (1<<7)) // true if 4 & 7 bits set