to set a bit

Ian Rogers said:

Depends on the bit.... If its an SFR its been defined ie.. PORTA has RA0, RA1, RA2...etc

Or you can specify PORTB.RB1 etc...

If you need to specify undefined bits in a byte.... Then you need to create a struct or union to access them

Code:

struct {
    unsigned mybit1:1;   // 1 bit
    unsigned mybit2:1;
    unsigned mybit3:1;
    unsigned mybits4:2;   // 2 bits
    unsigned mybits5:3;  // 3 bits
  };
} MYBYTEbits;

Click to expand...

dougy83 said:

I'm assuming you're using a PIC... here's an example:

to set bit 5 of PORTB, you can use:
PORTB |= (1<<5);

to clear bit 7 of PORTB, you can use:
PORTB &= ~(1<<7);

The operators in C/C++ are listed here: https://en.wikipedia.org/wiki/Operators_in_C_and_C++

Click to expand...