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mikroSDK Library

RAQ click

Rating:

5

Author: MIKROE

Last Updated: 2020-11-27

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: Gas

Downloaded: 2724 times

Not followed.

License: MIT license  

RAQ Click is a compact add-on board targeted for use in refrigeration air quality (RAQ) applications. This board features the ZMOD4450, a gas sensor module designed for detecting gases associated with food ripening or rotting from Renesas Electronics Corporation.

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mikroSDK Library Blog

RAQ click

RAQ click

Native view of the RAQ click board.

View full image
RAQ click

RAQ click

Front and back view of the RAQ click board.

View full image

Library Description

The library covers all the necessary functions to control RAQ Click board™. Library performs a standard I2C interface communication.

Key functions:

  • ( uint8_t *cfg_data, uint8_t *prod_data, uint16_t *pid ) - Get sensor info function.
  • ( uint16_t *mox_lr, uint16_t *mox_er ) - Initialization of the sensor function.
  • ( float *rmox, uint16_t mox_lr, uint16_t mox_er ) - -.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes I2C and start to write log.
  • Application Initialization - Initialization driver enables - I2C, read and display product ID of the sensor, init. sensor and measurement, also write log.
  • Application Task - (code snippet) This is an example that demonstrates the use of the RAQ Click board™. Start measurement, check the status and read and display RMOX data if the status is OK, on the other hand, it displays an error. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on USB uart changes approximately for every 2 sec.
void application_task ( )
{
    ret = raq_start_measurement( );

    status_data = raq_get_status( );
    Delay_ms( 10 );
    
    while ( ( status_data & RAQ_STATUS_LAST_SEQ_STEP_MASK ) != RAQ_SUCCESS )
    {
        status_data = raq_get_status( );
        Delay_ms( 10 );
    }

    ret = raq_read_rmox( &rmox, mox_lr, mox_er );
    Delay_ms( 10 );

    if ( ret == RAQ_SUCCESS )
    {
        FloatToStr( rmox / 1000, demo_log );
        mikrobus_logWrite( "  Rmox : ", _LOG_TEXT );
        mikrobus_logWrite( demo_log, _LOG_TEXT );
        mikrobus_logWrite( " kOhm", _LOG_LINE );
        mikrobus_logWrite( "-------------------------", _LOG_LINE );
        Delay_ms( 2000 );
    }
    else
    {
        display_error( );
    }
}


Additional Functions :

  • void display_error ( ) - Display error status.

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 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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