28 lines
663 B
C
28 lines
663 B
C
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#ifndef _PCA9555_H_
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#define _PCA9555_H_
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#include <stdint.h>
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#define PCA9555_I2C_ADDR (0x40)
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#define PCA9555_REG_IN_PORT0 (0x0)
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#define PCA9555_REG_IN_PORT1 (0x1)
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#define PCA9555_REG_OUT_PORT0 (0x2)
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#define PCA9555_REG_OUT_PORT1 (0x3)
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#define PCA9555_REG_POLARITY0 (0x4)
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#define PCA9555_REG_POLARITY1 (0x5)
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#define PCA9555_REG_CONFIG0 (0x6)
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#define PCA9555_REG_CONFIG1 (0x7)
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/**
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* @brief Init I2C and port expander
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*/
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void port_expander_init(void);
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uint8_t port_expander_get_buttons(void);
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void port_expander_set_leds(uint8_t leds);
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uint8_t port_expander_get_leds(void);
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void port_expander_set_single_led(uint8_t pos, uint8_t val);
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#endif /* _PCA9555_H */
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