pressure20  2.0.0.0
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Pressure 20 click

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Click library

  • Author : Stefan Filipovic
  • Date : Apr 2022.
  • Type : I2C/SPI type

Software Support

We provide a library for the Pressure 20 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Pressure 20 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Pressure 20 click board by reading and displaying the pressure and temperature data on the USB UART.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the click default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
pressure20_cfg_t pressure20_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
pressure20_cfg_setup( &pressure20_cfg );
PRESSURE20_MAP_MIKROBUS( pressure20_cfg, MIKROBUS_1 );
err_t init_flag = pressure20_init( &pressure20, &pressure20_cfg );
if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( PRESSURE20_ERROR == pressure20_default_cfg ( &pressure20 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Waits for the data ready interrupt, clears the interrupts and than reads

the pressure [mBar] and temperature [Celsius] data and displays them on the USB UART at the set output data rate (25Hz by default).

void application_task ( void )
{
// Wait for the data ready interrupt
while ( pressure20_get_int_pin ( &pressure20 ) );
float pressure, temperature;
if ( ( PRESSURE20_OK == pressure20_clear_interrupts ( &pressure20 ) ) &&
( PRESSURE20_OK == pressure20_read_data ( &pressure20, &pressure, &temperature ) ) )
{
log_printf ( &logger, " Pressure: %.1f mBar\r\n", pressure );
log_printf ( &logger, " Temperature: %.2f C\r\n\n", temperature );
}
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Pressure20

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. UART terminal is available in all MikroElektronika compilers.


pressure20_read_data
err_t pressure20_read_data(pressure20_t *ctx, float *pressure, float *temperature)
Pressure 20 read data function.
pressure20_s
Pressure 20 Click context object.
Definition: pressure20.h:343
pressure20_clear_interrupts
err_t pressure20_clear_interrupts(pressure20_t *ctx)
Pressure 20 clear interrupts function.
pressure20_init
err_t pressure20_init(pressure20_t *ctx, pressure20_cfg_t *cfg)
Pressure 20 initialization function.
pressure20_cfg_t
Pressure 20 Click configuration object.
Definition: pressure20.h:363
application_task
void application_task(void)
Definition: main.c:67
PRESSURE20_ERROR
@ PRESSURE20_ERROR
Definition: pressure20.h:390
PRESSURE20_OK
@ PRESSURE20_OK
Definition: pressure20.h:389
pressure20_get_int_pin
uint8_t pressure20_get_int_pin(pressure20_t *ctx)
Pressure 20 get int pin function.
application_init
void application_init(void)
Definition: main.c:30
PRESSURE20_MAP_MIKROBUS
#define PRESSURE20_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: pressure20.h:309
pressure20_cfg_setup
void pressure20_cfg_setup(pressure20_cfg_t *cfg)
Pressure 20 configuration object setup function.
pressure20_default_cfg
err_t pressure20_default_cfg(pressure20_t *ctx)
Pressure 20 default configuration function.