30 lines
708 B
C
30 lines
708 B
C
/*
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* pcf8574.h
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*
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* Created on: Apr 28, 2017
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* Author: sanchayan
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*/
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#ifndef PCF8574_H_
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#define PCF8574_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <libsoc_i2c.h>
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/* PCF8574 I2C Address on Pioneer 600 */
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#define PCF8574_ADDRESS 0x20
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i2c* pcf8574_init(uint8_t i2c_bus, uint8_t i2c_address);
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int pcf8574_free(i2c *i2c);
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uint8_t pcf8574_port_read(i2c *i2c);
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size_t pcf8574_port_read_buf(i2c *i2c, void *buf, size_t len);
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void pcf8574_port_write(i2c *i2c, uint8_t value);
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size_t pcf8574_port_write_buf(i2c *i2c, void *buf, size_t len);
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bool pcf8574_gpio_read(i2c *i2c, uint8_t num);
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void pcf8574_gpio_write(i2c *i2c, uint8_t num, bool value);
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#endif /* PCF8574_H_ */
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