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mikroSDK Library

Nano Power 2 click

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Author: MikroElektronika Team

Last Updated: 2018-03-16

Category: Other Codes

Downloaded: 337 times

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Nano Power 2 click is a very low power voltage comparator, aimed at portable and battery-powered applications. It allows detecting a difference of two voltage potentials, applied on two input pins.

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mikroSDK Library Blog

Nano Power 2 click

Nano Power 2 click

Native view of the Nano Power 2 click board.

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Nano Power 2 click

Nano Power 2 click

Front and back view of the Nano Power 2 click board.

View full image

Library Description

Library initializes and defines GPIO driver and performs control of device voltage.
For more details check the documentation.

Key functions:

  • NANOPW2_RETVAL_T nanopw2_checkOutput( void ) - Function gets output voltage from comparator.

Example description

The application is composed of three sections:

  • System Initialization -  Initializes OUT (INT) pin as an input.
  • Application Initialization - Initializes GPIO driver.
  • Application Task - (code snippet) - Checks the comparator's output and logs output value on USB UART. The hysteresis in a comparator creates two trip points: one for upper threshold (VTRIP+) and one for lower threshold (VTRIP-) for voltage transitions on the input signal. When the comparator’s input voltages are equal, the hysteresis effectively causes one comparator input to move quickly past the other, thus taking the input out of the region where oscillation occurs. The output voltage is high (1) when noninverted input voltage rises above the hysteresis and stays high until noninverted input voltage falls below the hysteresis. Then the output goes low and stays low until noninverted input voltage rises above the hysteresis. This is an example where the inverted input voltage is fixed and the noninverted input voltage is varied. If the inputs were reversed, the example would be the same, except with an inverted output.
void applicationTask()
{
 outCheck = nanopw2_checkOutput();
 if (outCheck != outCheckPrev)
 {
 WordToStr( outCheck, text );
 mikrobus_logWrite( "OUT is: ", _LOG_TEXT );
 mikrobus_logWrite( text, _LOG_LINE );
 outCheckPrev = outCheck;
 }
}


Additional notes and information

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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