i2cmux3

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I2C MUX 3 Click

I2C MUX 3 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : MikroE Team
• Date : Sep 2020.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of I2C MUX 3 Click board.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.I2cMux3

Example Key Functions

• i2cmux3_cfg_setup Config Object Initialization function.

void i2cmux3_cfg_setup ( i2cmux3_cfg_t *cfg );

• i2cmux3_init Initialization function.

err_t i2cmux3_init ( i2cmux3_t *ctx, i2cmux3_cfg_t *cfg );

• i2cmux3_rd_slv Slave Device Read function.

void i2cmux3_rd_slv ( i2cmux3_t *ctx, uint8_t slv_sel_adr, uint8_t reg, uint8_t *p_rd_data, uint8_t n_bytes );

• i2cmux3_dev_enable Device enable function.

void i2cmux3_dev_enable ( i2cmux3_t *ctx, uint8_t stat );

• i2cmux3_hw_rst Hardware reset function.

void i2cmux3_hw_rst ( i2cmux3_t *ctx );

Application Init

Initalizes the driver, preforms hardware reset, then enables channel 0 and makes an initial log.

void application_init ( void )
{
    log_cfg_t log_cfg;
    i2cmux3_cfg_t cfg;

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    i2cmux3_cfg_setup( &cfg );
    I2CMUX3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    i2cmux3_init( &i2cmux3, &cfg );
    Delay_ms ( 100 );
    
    i2cmux3_hw_rst( &i2cmux3 );
    Delay_ms ( 100 );
    i2cmux3_ch_sel( &i2cmux3, 0 );
    log_printf( &logger, " Please connect a 6DOF IMU 12 Click to channel 0\r\n" );
    log_printf( &logger, "-------------------------------\r\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}

Application Task

Reads the device ID of a 6DOF IMU 12 Click (dev ID: 0x24) and displays it on the USB UART each second.

void application_task ( void )
{
    i2cmux3_rd_slv ( &i2cmux3, 0x68, 0x00, &id_val, 1 );
    log_printf( &logger, " The Click device ID is:  0x%.2X \r\n", ( uint16_t ) id_val );
    log_printf( &logger, "-------------------------------\r\n" );
    Delay_ms ( 1000 );
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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