PIO_PERIPH_SEL(PIOB_BASE, BV(22), PIO_PERIPH_B); \
/* Prescale the cpu clock to the frequenzy that we want. */\
/* (multiply value of audio sample rate) */\
PIO_PERIPH_SEL(PIOB_BASE, BV(22), PIO_PERIPH_B); \
/* Prescale the cpu clock to the frequenzy that we want. */\
/* (multiply value of audio sample rate) */\
/* Enable the clock and wait until it starts correctly */ \
PMC_SCER = BV(PMC_PCK0_ID); \
while ((PMC_SR & BV(PMC_PCKRDY0)) == 0); \
/* Enable the clock and wait until it starts correctly */ \
PMC_SCER = BV(PMC_PCK0_ID); \
while ((PMC_SR & BV(PMC_PCKRDY0)) == 0); \