main.c File Reference

Wheatstone Click example. More...

#include "board.h"
#include "log.h"
#include "wheatstone.h"

Functions
void	application_init (void)
void	application_task (void)
int	main (void)

Detailed Description

Wheatstone Click example.

Description

This example demonstrates the use of Wheatstone click board by measuring the input resistance.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger and sets the default potentiometer (gain) level.

Application Task

Reads the AN pin voltage and calculates the input resistance from it. All data are being displayed on the USB UART where you can track their changes.

Note

The following formulas you may find useful: AN_PIN(V) = ( ( 1kOhm + R_INPUT(kOhm) ) / ( 1kOhm + 2*R_INPUT(kOhm) ) - 1/2 ) * VCC(V) * GAIN VOUT(V) = AN_PIN(V) / GAIN R_INPUT(kOhm) = ( VCC(V) * GAIN - 2*AN_PIN(V) ) / ( 4*AN_PIN(V) ) R_INPUT(kOhm) = ( VCC(V) - 2*VOUT(V) ) / ( 4*VOUT(V) )

Author

MikroE Team

Function Documentation

application_init()

void application_init

(

void

)

Logger initialization. Default baud rate: 115200 Default log level: LOG_LEVEL_DEBUG

Note

If USB_UART_RX and USB_UART_TX are defined as HAL_PIN_NC, you will need to define them manually for log to work. See LOG_MAP_USB_UART macro definition for detailed explanation.

application_task()

void application_task

(

void

)

main()

int main

(

void

)