#ifndef PCA9555_H
#define PCA9555_H

#include "lib/mystd.h"

#define PCA9555_ADDR		 0b0100000
#define PCA9555_INPUT_PORT0	 0x00
#define PCA9555_INPUT_PORT1	 0x01
#define PCA9555_OUTPUT_PORT0 0x02
#define PCA9555_OUTPUT_PORT1 0x03
#define PCA9555_CONFIG_PORT0 0x06
#define PCA9555_CONFIG_PORT1 0x07

extern uint8_t		  ADDR_BITS;
static inline uint8_t pca9555_addr(void) {
	return PCA9555_ADDR | ADDR_BITS;
}
t_error pca9555_detect_addr(void);
t_error pca9555_read(uint8_t reg, uint8_t* out);
t_error pca9555_write(uint8_t reg, uint8_t value);
t_error pca9555_write_masked(uint8_t reg, uint8_t value, uint8_t mask);

#endif /* PCA9555_H */