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mikroSDK Library

Pressure click

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0

Author: MIKROE

Last Updated: 2019-03-15

Package Version: 1.0.0.1

mikroSDK Library: 1.0.0.0

Category: Pressure

Downloaded: 8598 times

Followed by: 2 users

License: MIT license  

This is a sample program which demonstrates the use of Pressure Click.
Program uses Pressure module LPS331AP for measuring 260-1260 mbar of pressure.
Pressure and temperature is then presented on the LCD 2 x 16 char bit.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

Pressure Click Board

Pressure Click Board

Front and back view of Pressure Click board designed in mikroBUS form factor. mikroBUS is specially designed pinout standard with SPI, I2C, Analog, UART, Interrupt, PWM, Reset and Power supply pins.

View full image

Library Description

The library covers all the necessary functions to control Pressure Click board. Library performs the communication with the device via I2C driver by writing to registers and by reading from registers. Library set/get configuration, for getting the ID, for enabling/disable device,
for measuring pressure and temperature and convert that data to pressure in mbar and temperature in degrees Celsius, etc.

Key functions:

  • uint8_t pressure_defaultCofig() - Default configuration function.
  • float pressure_getPressure() - Get pressure function.
  • float pressure_getTemperature() - Get temperature in degrees Celsius function.

Examples description

The application is composed of three sections:

  • System Initialization - Initializes GPIO, I2C, and LOG structures set INT pins as input and CS pin as output.
  • Application Initialization -  Initialization driver enable's - I2C, set default configuration start write log.
  • Application Task - (code snippet) This is an example which demonstrates the use of Pressure Click board. Measured pressure and temperature data from the LPS331AP sensor on Pressure click board. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on usb uart changes for every 3 sec.
void applicationTask() 
{
    pressure = pressure_getPressure();
    Delay_10ms();
    mikrobus_logWrite( " Pressure   : ", _LOG_TEXT );
    FloatToStr( pressure, logText );
    mikrobus_logWrite( logText, _LOG_TEXT );
    mikrobus_logWrite( " mbar", _LOG_LINE );
    
    temperature = pressure_getTemperature();
    Delay_10ms();
    mikrobus_logWrite( " Temperature: ", _LOG_TEXT );
    FloatToStr( temperature, logText );
    mikrobus_logWrite( logText, _LOG_TEXT );
    mikrobus_logWrite( degCel, _LOG_LINE );
    mikrobus_logWrite( "----------------------------", _LOG_LINE );

    Delay_1sec();
    Delay_1sec();
    Delay_1sec();
}    

Other mikroE Libraries used in the example:

  • SPI or I2C
  • UART​
  • Conversion

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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