IO register bit manipulation
bit_is_set
bit_is_set(sfr, bit)
bit_is_clear
bit_is_clear(sfr, bit)
loop_until_bit_is_set
loop_until_bit_is_set(sfr, bit)
loop_until_bit_is_clear
loop_until_bit_is_clear(sfr, bit)
Parent topic:
<avr/sfr_defs.h>: Special function registers