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DTMF Generator click

Rating:

Author: MIKROE

Last Updated: 2020-10-28

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: Signal processing

Downloaded: 2921 times

Not followed.

License: MIT license

DTMF Generator Click is a compact add-on board that generates DTMF (Dual-Tone Multi-Frequency) signals designed for MCU interfaces. This board features the HT9200A, a dual-tone multi-frequency decoder mostly used in mobile communications systems from Holtek Semiconductor Inc.

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mikroSDK Library Blog

Product Page

DTMF Generator Click

Native view of the DTMF Generator Click board.

DTMF Generator Click

Front and back view of the DTMF Generator Click board.

Library Description

The library covers all the necessary functions to control DTMF Generator board.

Key functions:

void dtmfgenerator_power_on ( void ) - Power ON function.
void dtmfgenerator_transmit_signal ( uint8_t *digits, uint16_t delay_m_s ) - Transmit a DTMF signal function.

Examples description

The application is composed of three sections :

System Initialization - Initializes GPIO and start to write log.
Application Initialization - Initialization driver enables - GPIO, run the power-on sequence, also write log.
Application Task - (code snippet) This is an example which demonstrates the use of DTMF Generator Click board. DTMF Generator click board DTMF generator transmits the signal for generating tone for digits : "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "*" and "#". All data logs write on USB uart changes.

void application_task ( )
{
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '0'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_0, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '1'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_1, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '2'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_2, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '3'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_3, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '4'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_4, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '5'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_5, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '6'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_6, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '7     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_7, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '8'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_8, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '9'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_9, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      'A'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_A, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      'B'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_B, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      'C'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_C, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );
    
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      'D'     ", _LOG_LINE );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_D, signal_duration );
    dtmfgenerator_transmit_signal( DTMFGENERATOR_TONE_STOP, signal_duration );

    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '*'     ", _LOG_LINE );
    dtmfgenerator_transmit_out_tone( DTMFGENERATOR_OUT_TONE_ASTERISK, 
                                     signal_duration );
    dtmfgenerator_transmit_out_tone( DTMFGENERATOR_OUT_TONE_STOP, 
                                     signal_duration );

    mikrobus_logWrite( "-------------------", _LOG_LINE );
    mikrobus_logWrite( " TONE      '#'     ", _LOG_LINE );
    dtmfgenerator_transmit_out_tone( DTMFGENERATOR_OUT_TONE_HASH, 
                                     signal_duration );
    dtmfgenerator_transmit_out_tone( DTMFGENERATOR_OUT_TONE_STOP, 
                                     signal_duration );
    Delay_ms( 2000 );
}

Other mikroE Libraries used in the example:

GPIO
UART

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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