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#ifndef OUTPUT_EXTENDER_H_
#define OUTPUT_EXTENDER_H_
#include "4094.h"
#include "util.h"
#include "main.h"
/** Portextender Bitdefinitionen */
enum extout_bits {
/** LCD Reset pin */
EXTOUT_LCD_RST,
/** LCD CS1 pin */
EXTOUT_LCD_CS2,
/** LCD CS2 pin */
EXTOUT_LCD_CS1,
#if BOARDID == BOARDID_MYAVR
/** LCD E pin */
EXTOUT_LCD_E,
#else
EXTOUT_UNUSED_3,
#endif
/** LED 1 */
EXTOUT_LED1,
/** LED 0 */
EXTOUT_LED0,
/** LCD DI pin */
EXTOUT_LCD_DI,
/** LCD RW pin */
EXTOUT_LCD_RW,
};
extern sr4094_t extout_state;
extern sr4094_t old_extout_state;
/** \brief Portextender Bitstatus abfragen */
static inline bool extout_bit_is_set(uint8_t bit_number)
{
return !!(extout_state & ((sr4094_t)1 << bit_number));
}
/** \brief Portextender Bit setzen */
static inline void extout_set_bit(uint8_t bit_number)
{
extout_state |= ((sr4094_t)1 << bit_number);
}
/** \brief Portextender Bit loeschen */
static inline void extout_clear_bit(uint8_t bit_number)
{
extout_state &= ~((sr4094_t)1 << bit_number);
}
/** \brief Portextender Bit setzen oder loeschen. */
static inline void extout_write_bit(uint8_t bit_number, bool set)
{
if (set)
extout_set_bit(bit_number);
else
extout_clear_bit(bit_number);
}
/** \brief Portextender Status in Hardware uebertragen. */
static inline void extout_commit(void)
{
/* Schieberegister beschreiben. */
sr4094_put_data(old_extout_state, extout_state);
old_extout_state = extout_state;
}
void extout_init(void);
#endif /* OUTPUT_EXTENDER_H_ */
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