ISO ADC 3 Click

ISO ADC 3 Click is a compact add-on board that contains a single-channel precision isolation amplifier. This board features the AMC1100, a precision isolation amplifier with an output separated from the input circuitry by a silicon dioxide barrier that is highly resistant to magnetic interference from Texas Instruments.

Click Product page

Click library

• Author : Stefan Ilic
• Date : Aug 2021.
• Type : I2C type

Software Support

We provide a library for the ISOADC3 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for ISOADC3 Click driver.

Standard key functions :

• isoadc3_cfg_setup Config Object Initialization function.

  void isoadc3_cfg_setup ( isoadc3_cfg_t *cfg );

• isoadc3_init Initialization function.

  err_t isoadc3_init ( isoadc3_t *ctx, isoadc3_cfg_t *cfg );

Example key functions :

• isoadc3_read_adc Read ADC function.

  uint16_t isoadc3_read_adc ( isoadc3_t *ctx );

• isoadc3_get_adc_voltage Read ADC voltage function.

  uint16_t isoadc3_get_adc_voltage ( isoadc3_t *ctx, uint16_t v_ref );

• isoadc3_read_voltage Read voltage function.

  uint16_t isoadc3_read_voltage ( isoadc3_t *ctx, uint16_t v_ref );

Example Description

This example shows the capabilities of the ISO ADC 3 Click.

The demo application is composed of two sections :

Application Init

Initalizes I2C driver and makes an initial log.

void application_init ( void ) {
    log_cfg_t log_cfg;  /**< Logger config object. */
    isoadc3_cfg_t isoadc3_cfg;  /**< Click config object. */

    /** 
     * 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.
    isoadc3_cfg_setup( &isoadc3_cfg );
    ISOADC3_MAP_MIKROBUS( isoadc3_cfg, MIKROBUS_1 );
    err_t init_flag = isoadc3_init( &isoadc3, &isoadc3_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

Application Task

Measures ADC voltage level and prints it via USB UART terminal.

void application_task ( void ) {
    voltage = isoadc3_read_voltage( &isoadc3, ISOADC3_VREF_3V3 );
    log_printf( &logger, " ADC voltage Level: %d mV \r\n", voltage );
    log_printf( &logger, "------------------------\r\n" );
    Delay_ms ( 1000 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.ISOADC3

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. UART terminal is available in all MikroElektronika compilers.