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/projects/cubeos/src_current/drivers/i2c/analog.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <analog.h>
#include <i2cd.h>

Include dependency graph for analog.c:

Go to the source code of this file.

Functions
int	I2C_ReadAnalogIn (int chip, int channel)
	read one A/D input channel of a PCF8591 device. More...
int	I2C_ConfigureAnalog (int chip, char how)
	configure the a/d function of one PCF8591 chip. More...
int	I2C_WriteAnalogOut (int chip, int value)
	sets the D/A output channel of a PCF8591 chip. More...
int	I2C_init_analog ()
	configure all PCF8591 A/D-D/A devices. More...
Variables
_I2C_ad_datas	_I2C_ad_data [16]
	keeps information about the PCF8591 A/D - D/A converters in the system. More...
int	_I2C_adnum
char	_I2C_analog_mbuf [MAXI2CMESSLENGTH]
i2cmess	_I2C_analog_m

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Detailed Description

Definition in file analog.c.

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Function Documentation

int I2C_ReadAnalogIn (  int    chip, int    channel )

read one A/D input channel of a PCF8591 device. Parameters: chip  is the chip ID as set by init_analog() channel  is the A/D channel to read Definition at line 40 of file analog.c. References _I2C_analog_mbuf, _I2C_ad_datas::active, _I2C_ad_datas::address, i2cmess::address, i2cmess::buf, I2C_MASTER, I2C_process, i2cmess::nrBytes, and _I2C_ad_datas::status.

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Variable Documentation

int _I2C_adnum

Definition at line 30 of file analog.c. Referenced by I2C_init_analog.

struct i2cmess _I2C_analog_m

Definition at line 33 of file analog.c.

char _I2C_analog_mbuf[MAXI2CMESSLENGTH]

Definition at line 32 of file analog.c. Referenced by I2C_ConfigureAnalog, I2C_init_analog, I2C_ReadAnalogIn, and I2C_WriteAnalogOut.

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