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mikroSDK Library

MIC 2 click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2019-01-18

Category: Audio & Speech

Downloaded: 258 times

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License: MIT license  

MIC 2 click is equipped with a small electret microphone, accompanied by a suitable pre-amplifying circuit. The small electret microphone is not capable of providing sufficient line-level output; therefore, the pre-amp has to be used.

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mikroSDK Library Blog

MIC 2 click

MIC 2 click

Native view of the MIC 2 click board.

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MIC 2 click

MIC 2 click

Front and back view of the MIC 2 click board.

View full image

Library Description

The library contains functions with reading values ​​from the ADC and setting the potentiometer over the I2C lines. The values returned by MIC 2 click, the user can see on the Serial plot.

Key functions:

  • void mic2_setPotentiometer(uint8_t ptt_value) - Functions for sets resistance of the potentiometer.
  • uint32_t mic2_adcRead() - ADC read.
  • void mic2_adcSetInputChannel() - ADC set channel.
  • void mic2_adcInit() - ADC init.

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes I2C module, LOG communication and AN pin as INPUT.
  • Application Initialization - Initializes driver init, ADC init and sets digital pot.
  • Application Task - Reads ADC data from AN pin and plots it on serial plotter.
void applicationTask( )
{
    uint16_t adcValue;
    
    adcValue = mic2_adcRead();
    plotData( adcValue );
}

Additional Functions :

  • plotData() - Performs the data plotting on serial plot.

Other mikroE Libraries used in the example:

  • I2C
  • UART
  • ADC

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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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