pressure9  2.0.0.0
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Pressure 9 click

Pressure 9 click is a digital barometric air pressure sensor Click board™. It is equipped with the DPS422, barometric air pressure sensor, based on a capacitive sensor element.


Click library

Software Support

We provide a library for the Pressure9 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 Pressure9 Click driver.

Standard key functions :

Example key functions :

Examples Description

The demo application displays the pressure and temperature measurement using Pressure 9 click.

The demo application is composed of two sections :

Application Init

Initialization driver init, test comunication, software reset, configuration module for measurement and calls the function to update calibration coefficients

  • this function must be called before the measurement starts.
void application_init ( void )
{
log_cfg_t log_cfg;
// Logger initialization.
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
PRESSURE9_MAP_MIKROBUS( cfg, MIKROBUS_1 );
pressure9_init( &pressure9, &cfg );
// Test comunication
if ( tmp == PRESSURE9_PRODUCT_ID )
{
log_printf( &logger, "---- Comunication OK!!! ----\r\n" );
}
else
{
log_printf( &logger, "---- Comunication ERROR!!! ----\r\n" );
for ( ; ; );
}
pressure9_default_cfg( &pressure9 );
log_printf( &logger, "---- Start Measurement ----\r\n" );
Delay_ms( 100 );
}

Application Task

Reads Temperature data in [C] and Pressure data in [mBar] and this data logs to the USB UART every 2 sec.

void application_task ( void )
{
pressure = pressure9_get_pressure_data( &pressure9 );
log_printf( &logger, "-- Pressure : %.2f mBar\r\n", pressure );
temperature = pressure9_get_temperature_data( &pressure9 );
log_printf( &logger, "-- Temperature : %.2f °C\r\n", temperature );
log_printf( &logger, "-----------------------------\r\n" );
Delay_ms( 2000 );
}

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:

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.