Library Description

The library covers all the necessary functions that enables the usage of the ADC 3 click board.
It initializes and defines the I2C driver and drivers that offer a choice for reading digital
data from all four channels seperatly or all together.

Key functions:

• uint16_t adc3_readData( uint8_t config, uint8_t resolution ); -  Function is used to read digitaly converted data from any of the 4 channels.
• void adc3_reset();-   Function is used to initiate general call reset.
• void adc3_conversion(); -   Function is used to initiate general call conversion.

Examples Description

The application is composed of three sections:

• System Initialization - Initializes I2C and LOG structures.
• Application Initialization - Initalizes I2C driver, resets the device and makes an initial log.
• Application Task - (code snippet) This is an example that shows the capabilities of the ADC 3 click by taking measurements from all four channel simultaneously.

void applicationTask()
{
    configuration1 = _ADC3_PGA_GAIN_X1 | _ADC3_SAMPLE_RATE_16 | _ADC3_CONTINOUS_ADDR | _ADC3_SELECT_CHANNEL_1;
    readVal = adc3_readData( configuration1, _ADC3_SAMPLE_RATE_16 );
    Delay_ms( 100 );
    IntToStr( readVal, txtLog );
    Ltrim( txtLog );
    mikrobus_logWrite( "Channel 1 : ", _LOG_TEXT );
    mikrobus_logWrite( txtLog, _LOG_LINE );

    configuration2 = _ADC3_PGA_GAIN_X1 | _ADC3_SAMPLE_RATE_16 | _ADC3_CONTINOUS_ADDR | _ADC3_SELECT_CHANNEL_2;
    readVal = adc3_readData( configuration2, _ADC3_SAMPLE_RATE_16 );
    Delay_ms( 100 );
    IntToStr( readVal, txtLog );
    Ltrim( txtLog );
    mikrobus_logWrite( "Channel 2 : ", _LOG_TEXT );
    mikrobus_logWrite( txtLog, _LOG_LINE );

    configuration3 = _ADC3_PGA_GAIN_X1 | _ADC3_SAMPLE_RATE_16 | _ADC3_CONTINOUS_ADDR | _ADC3_SELECT_CHANNEL_3;
    readVal = adc3_readData( configuration3, _ADC3_SAMPLE_RATE_16 );
    Delay_ms( 100 );
    IntToStr( readVal, txtLog );
    Ltrim( txtLog );
    mikrobus_logWrite( "Channel 3 : ", _LOG_TEXT );
    mikrobus_logWrite( txtLog, _LOG_LINE );

    configuration4 = _ADC3_PGA_GAIN_X1 | _ADC3_SAMPLE_RATE_16 | _ADC3_CONTINOUS_ADDR | _ADC3_SELECT_CHANNEL_4;
    readVal = adc3_readData( configuration4, _ADC3_SAMPLE_RATE_16 );
    Delay_ms( 100 );
    IntToStr( readVal, txtLog );
    Ltrim( txtLog );
    mikrobus_logWrite( "Channel 4 : ", _LOG_TEXT );
    mikrobus_logWrite( txtLog, _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