dac.h

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#ifndef _DAC_H_
#define _DAC_H_

#ifdef __GNUC__
#include <avr32/io.h>
#elif __ICCAVR32__
#include <avr32/ioap7000.h>
#else
#error No known compiler used
#endif

#ifdef __AVR32_AP7000__

#define ABDAC_TIMEOUT   5000

#define ABDAC_GCLK  6
#else
#error No GCLK, DMA handshake and DMA channel defined for ABDAC on this device
#endif

enum {
    EINVAL = 22,
    ETIMEOUT,
};

void abdac_enable(volatile avr32_abdac_t *abdac);
void abdac_disable(volatile avr32_abdac_t *abdac);

unsigned long abdac_set_dac_hz(volatile avr32_abdac_t *abdac,
        const unsigned long bus_hz, const unsigned long dac_hz);
unsigned long abdac_get_dac_hz(volatile avr32_abdac_t *abdac,
        const unsigned long bus_hz);

int abdac_sink(volatile avr32_abdac_t *abdac,
        const unsigned short ch0, const unsigned short ch1);

#define ABDAC_BIT(name)                     \
    (1 << AVR32_ABDAC_##name##_OFFSET)

#define ABDAC_BF(name, value)                   \
    (((value) & ((1 << AVR32_ABDAC_##name##_SIZE) - 1)) \
     << AVR32_ABDAC_##name##_OFFSET)

#define GCLK_BIT(name)                      \
    (1 << AVR32_PM_GCCTRL0_##name##_OFFSET)

#define GCLK_BF(name, value)                    \
    (((value) & ((1 << AVR32_PM_GCCTRL0_##name##_SIZE) - 1))\
     << AVR32_PM_GCCTRL0_##name##_OFFSET)

#define GCLK_BFEXT(name, value)                 \
    (((value) >> AVR32_PM_GCCTRL0_##name##_OFFSET)      \
     & ((1 << AVR32_PM_GCCTRL0_##name##_SIZE) - 1))

#endif /* _DAC_H_ */

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