adc.c File Reference

ADC general purpose interface code for raw voltage input from file system. More...

#include <stdio.h>
#include <stdint.h>
#include "bbbandroidHAL.h"

Macros
#define	SYSFS_ADC_DIR   "/sys/bus/iio/devices/iio:device0"

Functions
int	readADC (const uint8_t channel)

Variables
static char	fsBuf [100]

Detailed Description

ADC general purpose interface code for raw voltage input from file system.

Author

Ankur Yadav (ankur.nosp@m.ayad.nosp@m.av@gm.nosp@m.ail..nosp@m.com)

Macro Definition Documentation

#define SYSFS_ADC_DIR   "/sys/bus/iio/devices/iio:device0"

File system path to access ADC

Function Documentation

int readADC

(

const uint8_t

channel

)

It takes ADC channel number as the input and reads its value using file system access and then returns its value.

Parameters

channel

a constant uint8_t argument.

Returns

If successful then value of ADC channel is returned and if it fails then -1 is returned.

Variable Documentation

char fsBuf[100]

static

Buffer to store generated file system path using snprintf