Library Description

The library covers all the necessary functions to control I2C Isolator 3 Click board™. Library performs a standard I2C interface communication.

Key functions:

• void i2cisolator3_set_slave_address ( uint8_t slave_addr ) - Set slave address function.
• void i2cisolator3_send_cmd ( uint8_t command ) - Send command function.
• void i2cisolator3_burst_read ( uint8_t reg, uint8_t *p_rx_data, uint8_t n_bytes ) - Burst read function.

Examples description

The application is composed of three sections :

• System Initialization - Initializes I2C and start to write log.
• Application Initialization - Initialization driver enables - I2C, set set I2C slave address of the Thermo 20 Click board™, performs software reset, also write log.
• Application Task - (code snippet) This is an example that demonstrates the use of the I2C Isolator 3 Click board™ . In this example, we measure temperature from the Thermo 20 Click board™ connected to the I2C Isolator 3 Click board™. All data logs write on USB UART changes every 3 sec.

void application_task ( )
{
    i2cisolator3_send_cmd( I2CISOLATOR3_THERMO20_CMD_CONVERSION );
    Delay_ms( 100 );

    calculate_temperature( );

    FloatToStr( temperature, log_text );
    mikrobus_logWrite( " Temperature : ", _LOG_TEXT );
    mikrobus_logWrite( log_text, _LOG_TEXT );
    mikrobus_logWrite( " C", _LOG_LINE );
    mikrobus_logWrite( "--------------------------", _LOG_LINE );
    Delay_ms( 3000 );
}

Additional Functions :

• void calculate_temperature( ) - Calculate temperature in degrees Celsius.

Other mikroE Libraries used in the example:

• I2C
• UART
• Conversions

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.