/**
* Initialize the specified channel of the DAC for AFSK needs.
- * The DAC have to be configured in order to call an ISR for every sample sent.
+ * The DAC has to be configured in order to call an ISR for every sample sent.
* The DAC doesn't have to start the IRQ immediatly but have to wait
* the AFSK driver to call AFSK_DAC_IRQ_START().
* The ISR must then call afsk_dac_isr() passing the AFSK context.