i2cmux.h

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/*
 * MikroSDK - MikroE Software Development Kit
 * Copyright© 2020 MikroElektronika d.o.o.
 * 
 * Permission is hereby granted, free of charge, to any person 
 * obtaining a copy of this software and associated documentation 
 * files (the "Software"), to deal in the Software without restriction, 
 * including without limitation the rights to use, copy, modify, merge, 
 * publish, distribute, sublicense, and/or sell copies of the Software, 
 * and to permit persons to whom the Software is furnished to do so, 
 * subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be 
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 
 * OR OTHER DEALINGS IN THE SOFTWARE. 
 */
 
// ----------------------------------------------------------------------------
 
#ifndef I2CMUX_H
#define I2CMUX_H
 
#ifdef PREINIT_SUPPORTED
#include "preinit.h"
#endif
 
#ifdef MikroCCoreVersion
    #if MikroCCoreVersion >= 1
        #include "delays.h"
    #endif
#endif
 
#include "drv_digital_out.h"
#include "drv_digital_in.h"
#include "drv_i2c_master.h"
 
// -------------------------------------------------------------- PUBLIC MACROS 
#define I2CMUX_MAP_MIKROBUS( cfg, mikrobus ) \
  cfg.scl  = MIKROBUS( mikrobus, MIKROBUS_SCL ); \
  cfg.sda  = MIKROBUS( mikrobus, MIKROBUS_SDA ); \
  cfg.rst = MIKROBUS( mikrobus, MIKROBUS_RST )
#define I2CMUX_RETVAL  uint8_t
 
#define I2CMUX_OK           0x00
#define I2CMUX_INIT_ERROR   0xFF
#define I2CMUX_I2C_SLAVE_ADDRESS_0                                    0x70
#define I2CMUX_I2C_SLAVE_ADDRESS_1                                    0x71
#define I2CMUX_I2C_SLAVE_ADDRESS_2                                    0x72
#define I2CMUX_I2C_SLAVE_ADDRESS_3                                    0x73
#define I2CMUX_I2C_SLAVE_ADDRESS_4                                    0x74
#define I2CMUX_I2C_SLAVE_ADDRESS_5                                    0x75
#define I2CMUX_I2C_SLAVE_ADDRESS_6                                    0x76
#define I2CMUX_I2C_SLAVE_ADDRESS_7                                    0x77
#define I2CMUX_CMD_NO_CH                                              0x00
#define I2CMUX_CMD_SET_CH_0                                           0x01
#define I2CMUX_CMD_SET_CH_1                                           0x02
#define I2CMUX_CMD_SET_CH_2                                           0x04
#define I2CMUX_CMD_SET_CH_3                                           0x08
 // End group macro 
// --------------------------------------------------------------- PUBLIC TYPES
typedef struct
{
    // Output pins 
 
    digital_out_t rst;
    
    // Modules 
 
    i2c_master_t i2c;
 
    // ctx variable 
 
    uint8_t slave_address;
 
} i2cmux_t;
 
typedef struct
{
    // Communication gpio pins 
 
    pin_name_t scl;
    pin_name_t sda;
    
    // Additional gpio pins 
 
    pin_name_t rst;
 
    // static variable 
 
    uint32_t i2c_speed;
    uint8_t i2c_address;
 
} i2cmux_cfg_t;
 
 // End types group
// ----------------------------------------------- PUBLIC FUNCTION DECLARATIONS
 
#ifdef __cplusplus
extern "C"{
#endif
 
void i2cmux_cfg_setup ( i2cmux_cfg_t *cfg );
 
I2CMUX_RETVAL i2cmux_init ( i2cmux_t *ctx, i2cmux_cfg_t *cfg );
 
void i2cmux_generic_write ( i2cmux_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len );
 
void i2cmux_generic_read ( i2cmux_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len );
 
void i2cmux_hw_reset ( i2cmux_t *ctx );
 
void i2cmux_write_cmd ( i2cmux_t *ctx, uint8_t tx_data );
 
uint8_t i2cmux_read_cmd ( i2cmux_t *ctx );
 
void i2cmux_set_channel ( i2cmux_t *ctx, uint8_t channel, uint8_t ch_slave_address );
 
#ifdef __cplusplus
}
#endif
#endif  // _I2CMUX_H_
 
 // End public_function group
 
// ------------------------------------------------------------------------- END