microscope-ring-light-remot.../include/pca9555.h

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2022-10-22 00:16:33 +02:00
#ifndef _PCA9555_H_
#define _PCA9555_H_
#include <stdint.h>
#define PCA9555_I2C_ADDR (0x40)
#define PCA9555_REG_IN_PORT0 (0x0)
#define PCA9555_REG_IN_PORT1 (0x1)
#define PCA9555_REG_OUT_PORT0 (0x2)
#define PCA9555_REG_OUT_PORT1 (0x3)
#define PCA9555_REG_POLARITY0 (0x4)
#define PCA9555_REG_POLARITY1 (0x5)
#define PCA9555_REG_CONFIG0 (0x6)
#define PCA9555_REG_CONFIG1 (0x7)
/**
* @brief Init I2C and port expander
*/
void port_expander_init(void);
uint8_t port_expander_get_buttons(void);
void port_expander_set_leds(uint8_t leds);
uint8_t port_expander_get_leds(void);
void port_expander_set_single_led(uint8_t pos, uint8_t val);
#endif /* _PCA9555_H */