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mikroSDK Library

ADC 7 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.19

mikroSDK Library: 2.0.0.0

Category: ADC

Downloaded: 377 times

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License: MIT license  

ADC 7 Click is an advanced 32-bit analog to digital converter (ADC) which uses the LTC2500-32, a 32-bit oversampling SAR ADC with a configurable digital filter. The filter provides several presets (selectable via the hardware pin), as well as programming of the filtering parameters, via the industry-standard SPI interface.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


ADC 7 Click

ADC 7 Click is an advanced 32-bit analog to digital converter (ADC) which uses the LTC2500-32, a 32-bit oversampling SAR ADC with a configurable digital filter. The filter provides several presets (selectable via the hardware pin), as well as programming of the filtering parameters, via the industry-standard SPI interface.

adc7_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : Dec 2019.
  • Type : SPI type

Software Support

We provide a library for the ADC7 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for ADC7 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void adc7_cfg_setup ( adc7_cfg_t *cfg );

  • Initialization function.

    ADC7_RETVAL adc7_init ( adc7_t ctx, adc7_cfg_t cfg );

  • Click Default Configuration function.

    void adc7_default_cfg ( adc7_t *ctx );

Example key functions :

  • Function performs the device configuration by sending configuration data .

    uint8_t adc7_set_config ( adc7_t* ctx, uint8_t gain_config, uint8_t down_samp_factor, uint8_t filter_type );

  • Function generates clock signal on MCK pin and on that way starts conversion.

    void adc7_start_conv_cycle ( adc7_t* ctx );

  • Function reads voltage value from AD converter and calculates this value to mV.

    uint8_t adc7_read_results ( adc7_t ctx, float voltage );

Examples Description

This example performs the reads of the converted voltage value. Results will be logged on uart terminal. Repeats operation every 200ms.

The demo application is composed of two sections :

Application Init

Initializes driver and performs configuration for conversion cycles.


void application_init ( void )
{
    log_cfg_t log_cfg;
    adc7_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 ----" );
    Delay_ms ( 100 );

    //  Click initialization.

    adc7_cfg_setup( &cfg );
    ADC7_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    adc7_init( &adc7, &cfg );

    adc7_default_cfg( &adc7 );
}

Application Task

Performs the determined number of conversion cycles which are necessary for averaging. When all conversion cycles are done, it reads the converted voltage value. Results will be logged on UART terminal every second.


void application_task ( void )
{
    adc7_start_conv_cycle( &adc7 );
    adc7_read_results( &adc7, &voltage_data );
    log_printf( &logger, "Voltage: %.2f mV\r\n", voltage_data );

    Delay_ms ( 1000 );
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.ADC7

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.


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