i2c-dev.h

Go to the documentation of this file.

 
#ifndef _I2C_DEV_HXX_
#define _I2C_DEV_HXX_
 
#if defined (__linux__)
    #include <linux/i2c-dev.h>
#elif defined (__FreeRTOS__) || defined(ESP_PLATFORM)
    #include <stdint.h>
    #define I2C_MAGIC ('i')
 
    #define I2C_SLAVE IOW(I2C_MAGIC, 1, sizeof(long))
 
    #define I2C_RDWR  IOWR(I2C_MAGIC, 2, sizeof(void*))
 
    #define I2C_SMBUS IOWR(I2C_MAGIC, 3, sizeof(void*))
 
    struct i2c_smbus_ioctl_data
    {
        uint8_t read_write;
        uint8_t command;
        uint32_t size;
        union i2c_smbus_data *data;
    };
 
    struct i2c_rdwr_ioctl_data
    {
        struct i2c_msg *msgs; 
        uint32_t nmsgs; 
    };
 
    #define  I2C_RDRW_IOCTL_MAX_MSGS 42
#else
    #error I2C drivers not supported on this OS
#endif
 
#endif /* _I2C_DEV_HXX_ */