Barometer 13 Click

How does it work?

Barometer 13 Click is based on the BMP585, a barometric pressure sensor from Bosch Sensortec. It consists of a pressure-sensitive MEMS sensor element and an integrated circuit that drives and reads out the sensor element. The on-chip FIFO buffer can hold up to 32 pressure samples with an absolute pressure accuracy of ±30Pa. The sensor itself can work in normal, forced, and continuous modes, while in standby mode, no measurements are performed, and power consumption is at a minimum. There is also a deep standby mode with further reduced power consumption. The BMP585 has a built-in dedicated IIR filter that can reduce noise caused by ambient disturbances, such as an open window, door, and more.

Barometer 13 Click can use a standard 2-wire I2C interface to communicate with the host MCU, with a clock frequency of up to 1MHz. The I2C address can be selected over the ADDR SEL jumper. You can also use a standard 4-wire SPI interface for the same purpose, with a clock frequency of up to 12MHz. The selection can be made over the COMM SEL jumpers. The BMP585 provides an interrupt functionality, which allows it to signal certain events to the host processor over the INT pin.

This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Specifications

Pinout diagram

This table shows how the pinout on Barometer 13 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	NC
ID SEL	RST	2	RST	INT	15	INT	Interrupt
SPI Select / ID COMM	CS	3	CS	RX	14	NC
SPI Clock	SCK	4	SCK	TX	13	NC
SPI Data OUT	SDO	5	MISO	SCL	12	SCL	I2C Clock
SPI Data IN	SDI	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

Barometer 13 Click electrical specifications

Software Support

We provide a library for the Barometer 13 Click as well as a demo application (example), developed using MIKROE compilers. The demo can run on all the main MIKROE development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Barometer 13 Click driver.

Key functions

• barometer13_get_measurement_data Barometer 13 get the measurement data function.

• barometer13_set_odr Barometer 13 set the output data rate function.

• barometer13_set_int_cfg Barometer 13 set the interrupt config function.

Example Description

This example demonstrates the use of Barometer 13 Click board™ by reading and displaying the pressure and temperature measurements.

void application_task ( void ) 
 {    
     float pressure = 0, temperature = 0; 
     if ( ( BAROMETER13_OK == barometer13_get_measurement_data( &barometer13, &pressure, &temperature ) ) && 
          barometer13_get_interrupt( &barometer13 ) ) 
     { 
         log_printf( &logger, " Pressure    : %.2f mBar rn", pressure ); 
         log_printf( &logger, " Temperature : %.2f degC rn", temperature ); 
         log_printf( &logger, " ______________________ rn" ); 
         Delay_ms( 1000 ); 
     } 
 }

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

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Barometer13

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 MIKROE compilers.

mikroSDK

This Click board™ is supported with mikroSDK – MIKROE Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

For more information about mikroSDK, visit the official page.