gp2y0a.h File Reference

Include dependency graph for gp2y0a.h:

API Description

//Modified: Abhishek Malik <abhishek.malik@intel.com>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "gp2y0a.h"

#include "upm_utilities.h"

int main()
{
    gp2y0a_context dev = gp2y0a_init(14, 5.0);
    float val;
    while(1){
        if(gp2y0a_get_value(dev, 5.0, 20, &val) != UPM_SUCCESS){
            printf("Failed to get any values from the sensor\n");
        }
        printf("Moisture Value: %f\n", val);
        upm_delay(1);
    }
    gp2y0a_close(dev);

    return 0;
}

Go to the source code of this file.

Data Structures
struct	_gp2y0a_context

Functions
gp2y0a_context	gp2y0a_init (uint8_t pin, float a_ref)
void	gp2y0a_close (gp2y0a_context dev)
upm_result_t	gp2y0a_get_value (gp2y0a_context dev, float a_ref, uint8_t samples, float *val)

Typedefs
typedef struct _gp2y0a_context *	gp2y0a_context

Function Documentation

gp2y0a_context gp2y0a_init	(	uint8_t	pin,
		float	a_ref
	)

GP2Y0A sensor init function

Parameters

pin	Analog pin to use
a_ref	reference voltage

void gp2y0a_close

(

gp2y0a_context

dev

)

GP2Y0A close function

Parameters

dev	sensor struct

upm_result_t gp2y0a_get_value	(	gp2y0a_context	dev,
		float	a_ref,
		uint8_t	samples,
		float *	val
	)

Gets an average voltage value from the sensor

Parameters

dev	sensor struct
aref	Reference voltage in use (usually 5.0V or 3.3V)
samples	Number of samples to average over

Returns

Average voltage reading

Typedef Documentation

typedef struct _gp2y0a_context * gp2y0a_context

device context