xc_drv_sw_i2c.h

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/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __XC_DRV_SW_I2C_H_
#define __XC_DRV_SW_I2C_H_
 
/*-----------------------------------------------------------------------------------
                                       INCLUDE HEADE FILES
 ------------------------------------------------------------------------------------*/
#include "xc6xxx.h"
 
/*------------------------------------------------------------------------------------
                                            TypeDef
 -------------------------------------------------------------------------------------*/
 
/*------------------------------------------------------------------------------------
                                             Macros
 -------------------------------------------------------------------------------------*/
 
#define SDA_OUT_HIGH(pin)                                                      \
    {                                                                          \
        xc_gpio_direction_config(pin, GPIO_DIR_OUTPUT);                           \
        xc_gpio_write_pin(pin, GPIO_PIN_SET);                                     \
    }
#define SDA_OUT_LOW(pin)                                                       \
    {                                                                          \
        xc_gpio_direction_config(pin, GPIO_DIR_OUTPUT);                           \
        xc_gpio_write_pin(pin, GPIO_PIN_RESET);                                   \
    }
 
#define SCL_OUT_HIGH(pin)                                                      \
    {                                                                          \
        xc_gpio_direction_config(pin, GPIO_DIR_OUTPUT);                           \
        xc_gpio_write_pin(pin, GPIO_PIN_SET);                                     \
    }
 
#define SCL_OUT_LOW(pin)                                                       \
    {                                                                          \
        xc_gpio_direction_config(pin, GPIO_DIR_OUTPUT);                           \
        xc_gpio_write_pin(pin, GPIO_PIN_RESET);                                   \
    }
 
#define SDA_INPUT(pin, pull)                                                   \
    {                                                                          \
        xc_gpio_direction_config(pin, GPIO_DIR_INPUT);                            \
        xc_gpio_pull_config(pin, pull);                                           \
    }
#define SDA_INPUT_VAL(pin) xc_gpio_read_pin(pin)
 
#define SCL_PIN            2
#define SDA_PIN            3
 
/*------------------------------------------------------------------------------------
                                       Inline Functions
 -------------------------------------------------------------------------------------*/
 
/*------------------------------------------------------------------------------------
                                         Global Variables
 -------------------------------------------------------------------------------------*/
 
/*------------------------------------------------------------------------------------
                                        Exported Functions
 -------------------------------------------------------------------------------------*/
void i2c_start(void);
void i2c_stop(void);
void i2c_send_byte(uint8_t txd);
void i2c_ack(void);
uint8_t i2c_read_byte(unsigned char ack);
void i2c_nack(void);
uint8_t i2c_wait_ack(void);
 
void i2c_software_init(void);
uint8_t at24cxx_read_byte(uint16_t addr);
void at24cxx_write_byte(uint16_t addr, uint8_t data);
 
void at24cxx_write_nbytes(uint16_t addr, uint8_t *buff, uint32_t num);
void at24cxx_read_nbytes(uint16_t addr, uint8_t *buff, uint32_t num);
 
#endif /* __XC60xx_SW_I2C_H_ */