diffpressure

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Diff pressure click

Diff pressure click carries NXP’s MPXV5010DP signal conditioned, temperature compensated and calibrated pressure sensor with two axial ports to accommodate industrial grade tubing.

click Product page

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Click library

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

Software Support

We provide a library for the diffpressure 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 diffpressure Click driver.

Standard key functions :

• diffpressure_cfg_setup Config Object Initialization function.

void diffpressure_cfg_setup ( diffpressure_cfg_t *cfg ); 

• diffpressure_init Initialization function.

err_t diffpressure_init ( diffpressure_t *ctx, diffpressure_cfg_t *cfg );

Example key functions :

• diffpressure_read_adc_voltage This function read ADC voltage value from Diff Pressure click.

float diffpressure_read_adc_voltage ( diffpressure_t *ctx );

• diffpressure_get_pa_difference This function get pressure difference [Pa].

int32_t diffpressure_get_pa_difference ( diffpressure_t *ctx, float adc_voltage );

Example Description

This application is temperature compensated and calibrated pressure sensor.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;
    diffpressure_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 " );

    // Click initialization.
    diffpressure_cfg_setup( &cfg );
    DIFFPRESSURE_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    if ( DIFFPRESSURE_OK != diffpressure_init( &diffpressure, &cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}
  

Application Task

This is an example which demonstrates the use of Diff Pressure click board. The example reads the values of ADC module (MPC3551) 22-bit register value converted to voltage and the pressure difference [ Pa ] and displays those values on the USB UART.

void application_task ( void )
{
    float adc_voltage = 0;
    int32_t difference = 0;

    adc_voltage = diffpressure_read_adc_voltage( &diffpressure );
    difference = diffpressure_get_pa_difference( &diffpressure, adc_voltage );

    log_printf( &logger, " ADC Voltage: %.3f [V]\r\n", adc_voltage );

    log_printf( &logger, " Pressure Diff: %ld [Pa]\r\n\n", difference );

    Delay_ms ( 100 );
}  

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.Diffpressure

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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