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LLC I2C Click

LLC I2C 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.

Click Library

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

Software Support

Example Description

This Click can be utilized as the level converter for logic signals. The topology of this logic level conversion (LLC) circuit is perfectly suited for the bi-directional I2C communication.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.LlcI2c

Example Key Functions

  • llci2c_cfg_setup Config Object Initialization function.
void llci2c_cfg_setup ( llci2c_cfg_t *cfg );
  • llci2c_init Initialization function.
err_t llci2c_init ( llci2c_t *ctx, llci2c_cfg_t *cfg );
  • llci2c_generic_write This function writes data to the desired register.
void llci2c_generic_write ( llci2c_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len );
  • llci2c_generic_read This function reads data from the desired register.
void llci2c_generic_read ( llci2c_t *ctx, uint8_t reg, uint8_t *data_buf, uint8_t len );

Application Init

Initialization driver init

void application_init ( void )
{
    log_cfg_t log_cfg;
    llci2c_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.

    llci2c_cfg_setup( &cfg );
    LLCI2C_MAP_MIKROBUS( cfg, MIKROBUS_POSITION_LLCI2C );
    llci2c_init( &llci2c, &cfg );
}

Application Task

Reads the temperature from the Thermo 7 Click board and logs data to UART.

void application_task ( void )
{
    // Thermo 7 measurement Temperature
    uint8_t write_reg = 0x00;
    uint8_t read_reg[ 2 ] = { 0 };
    
    float temp_msb;
    uint8_t temp_lsb;

    llci2c_generic_read ( &llci2c, write_reg, read_reg, 2 );
    
    temp_msb = read_reg[ 0 ];
    temp_lsb = read_reg[ 1 ] & 0xF0;

    if ( temp_lsb & 0x80 ) temp_msb += 0.50;
    if ( temp_lsb & 0x40 ) temp_msb += 0.25;
    if ( temp_lsb & 0x20 ) temp_msb += 0.125;
    if ( temp_lsb & 0x10 ) temp_msb += 0.0625;

    log_info( &logger, " Ambient temperature : %2.f C", temp_msb );
    Delay_ms ( 1000 );
}

Note

Connection between Thermo 7 and I2C-LLC is made through I2C interface.
You can connect a Thermo 7 Click and I2C-LLC Click with the wires to make connection between Click boards.
We use the Thermo 7 Click to demonstrate the functions of the I2C-LLC Click.

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.