Library Description

Library provides functions for communication with device via I2C protocol.

Key functions:

• void altitude4_generic_read ( uint8_t reg_adr, uint8_t *rx_buf, uint8_t buf_len ) - Function for reading data from device
• void altitude4_generic_write ( uint8_t reg_adr, uint8_t *tx_buf, uint8_t buf_len ) - Function for writing data to device
• uint8_t altitude4_read_sensor ( altitude4_sensor_t *sensor_data ) - Function for reading sensor data

Examples description

The application is composed of three sections :

• System Initialization - Initialization of I2C module
• Application Initialization - Maps I2c on Mikrobus 1 and sets device slave address
• Application Task - Logs sensor data every second

void application_task ( )
{
    altitude4_sensor_t sensor_data;
    char demo_txt[ 30 ];
    
    altitude4_read_sensor( &sensor_data );
    
    FloatToStr( sensor_data.altitude, demo_txt );
    mikrobus_logWrite( " - Altitude: ", _LOG_TEXT );
    mikrobus_logWrite( demo_txt, _LOG_TEXT );
    mikrobus_logWrite( " m", _LOG_LINE );

    FloatToStr( sensor_data.pressure, demo_txt );
    mikrobus_logWrite( " - Pressure: ", _LOG_TEXT );
    mikrobus_logWrite( demo_txt, _LOG_TEXT );
    mikrobus_logWrite( " mBar", _LOG_LINE );

    FloatToStr( sensor_data.temperature, demo_txt );
    mikrobus_logWrite( " - Temperature: ", _LOG_TEXT );
    mikrobus_logWrite( demo_txt, _LOG_TEXT );
    mikrobus_logWrite( log_degree, _LOG_LINE );

    mikrobus_logWrite( "_________________________________________", _LOG_LINE );
    
    Delay_ms( 1000 );
}

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.