| poke_bset | Function (Macro)

peekpoke.h

void poke_bset (unsigned char *addr, short bit);

Sets a bit at a memory address.

This macro sets bit bit at memory address addr, which can be any which which may be cast to `unsigned char *`. It is useful if you do not want to store a whole byte at this address, but only need to set a single bit to 1. As usual, the rightmost bit of a value is numbered 0, and the leftmost bit is 7 in this case. For example, let's assume the address addr contains the value 0b10010010, and you call this macro like this:

    poke_bset (addr, 3);

Then the value will be 0b10011010 afterwards.
Note: Do not use poke_bset for sending bits to I/O ports! Use pokeIO_bset instead.