org.lsst.ccs.drivers.ad
Class Ad7794Eval

java.lang.Object
  org.lsst.ccs.drivers.ad.Cypress
      org.lsst.ccs.drivers.ad.SpiBus
          org.lsst.ccs.drivers.ad.Ad7794Eval

public class Ad7794Eval
extends SpiBus

Routines to access an Analog Devices AD7794 evaluation board

Author:

Owen Saxton

Field Summary

static int	CFG_BOOST Public constants
static int	CFG_BUFFERED Public constants
static int	CFG_BURNOUT Public constants
static int	CFG_CHANNEL_M Public constants
static int	CFG_CHANNEL_V Public constants
static int	CFG_GAIN_M Public constants
static int	CFG_GAIN_V Public constants
static int	CFG_REF_DETECT Public constants
static int	CFG_REFSEL_M Public constants
static int	CFG_REFSEL_V Public constants
static int	CFG_STANDARD Public constants
static int	CFG_UNIPOLAR Public constants
static int	CFG_VBIAS_M Public constants
static int	CFG_VBIAS_V Public constants
static int	CHAN_AIN1 Public constants
static int	CHAN_AIN1A Public constants
static int	CHAN_AIN2 Public constants
static int	CHAN_AIN3 Public constants
static int	CHAN_AIN4 Public constants
static int	CHAN_AIN5 Public constants
static int	CHAN_AIN6 Public constants
static int	CHAN_TEMP Public constants
static int	CHAN_VDD Public constants
static int	CLOCK_EXT Public constants
static int	CLOCK_EXT_HALF Public constants
static int	CLOCK_INT Public constants
static int	CLOCK_INT_AVL Public constants
static int	COM_ADDRESS_M Public constants
static int	COM_ADDRESS_V Public constants
static int	COM_CONT_READ Public constants
static int	COM_READ Public constants
static int	CONFIG_REG Public constants
static int	DATA_REG Public constants
static int	DIO_ENABLE Public constants
static int	DIO_P1DATA Public constants
static int	DIO_P2DATA Public constants
static int	FRS_RATE_10 Public constants
static int	FRS_RATE_12 Public constants
static int	FRS_RATE_123 Public constants
static int	FRS_RATE_16 Public constants
static int	FRS_RATE_17 Public constants
static int	FRS_RATE_19 Public constants
static int	FRS_RATE_242 Public constants
static int	FRS_RATE_33 Public constants
static int	FRS_RATE_39 Public constants
static int	FRS_RATE_4 Public constants
static int	FRS_RATE_470 Public constants
static int	FRS_RATE_50 Public constants
static int	FRS_RATE_6 Public constants
static int	FRS_RATE_62 Public constants
static int	FRS_RATE_8 Public constants
static int	GAIN_1 Public constants
static int	GAIN_128 Public constants
static int	GAIN_16 Public constants
static int	GAIN_2 Public constants
static int	GAIN_32 Public constants
static int	GAIN_4 Public constants
static int	GAIN_64 Public constants
static int	GAIN_8 Public constants
static float	HALF_RANGE
static int	ID_REG Public constants
static int	IEXCDIR_11 Public constants
static int	IEXCDIR_12 Public constants
static int	IEXCDIR_21 Public constants
static int	IEXCDIR_22 Public constants
static int	IEXCENA_10 Public constants
static int	IEXCENA_1000 Public constants
static int	IEXCENA_210 Public constants
static int	IEXCENA_OFF Public constants
static float	INT_TEMP_SCALE
static float	INT_VOLT_SCALE
static int	IO_DIOENA Public constants
static int	IO_IEXCDIR_M Public constants
static int	IO_IEXCDIR_V Public constants
static int	IO_IEXCENA_M Public constants
static int	IO_IEXCENA_V Public constants
static int	IO_IO1DAT Public constants
static int	IO_IO2DAT Public constants
static int	IO_REG Public constants
static int	IO_STANDARD Public constants
static int	MOD_AMP_CM Public constants
static int	MOD_CHOP_DIS Public constants
static int	MOD_CLOCK_M Public constants
static int	MOD_CLOCK_V Public constants
static int	MOD_FRS_M Public constants
static int	MOD_FRS_V Public constants
static int	MOD_MODE_M Public constants
static int	MOD_MODE_V Public constants
static int	MOD_PSW Public constants
static int	MOD_STANDARD Public constants
static int	MODE_CONT Public constants
static int	MODE_IDLE Public constants
static int	MODE_INT_F_CAL Public constants
static int	MODE_INT_Z_CAL Public constants
static int	MODE_PWR_DOWN Public constants
static int	MODE_REG Public constants
static int	MODE_SINGLE Public constants
static int	MODE_SYS_F_CAL Public constants
static int	MODE_SYS_Z_CAL Public constants
static int	OFFSET_REG Public constants
static int	OPTN_CONFIG Public constants
static int	OPTN_IMMED Public constants
static int	OPTN_SINGLE Public constants
static int	RANGE_1250 Public constants
static int	RANGE_156 Public constants
static int	RANGE_19 Public constants
static int	RANGE_2500 Public constants
static int	RANGE_312 Public constants
static int	RANGE_39 Public constants
static int	RANGE_625 Public constants
static int	RANGE_78 Public constants
static float	REF_VOLTAGE
static int	REFSEL_EXT1 Public constants
static int	REFSEL_EXT2 Public constants
static int	REFSEL_INT Public constants
static int	SCALE_REG Public constants
static int	STATUS_REG Public constants
static int	STS_AD7794 Public constants
static int	STS_CHANNEL_M Public constants
static int	STS_CHANNEL_V Public constants
static int	STS_ERROR Public constants
static int	STS_NOXREF Public constants
static int	STS_READY Public constants
static int	VBIAS_AIN1 Public constants
static int	VBIAS_AIN2 Public constants
static int	VBIAS_AIN3 Public constants
static int	VBIAS_OFF Public constants

Constructor Summary

Ad7794Eval()
Constructors

Ad7794Eval(int index)

Method Summary

void	cleanupThermistor() Cleans up after reading the thermistor
int	commReg(int regnum, boolean read) Generates communications register value
int	getClockSource() Gets the clock source
int	getConvMode() Gets the conversion mode
int	getConvRate() Gets the conversion rate
int	getDio() Gets the DIO values
int	getGain() Gets the ADC gain
int	getRefSelect() Gets the reference selection
int[]	getRegSizes() Gets the array of register sizes
int	getSourceDirection() Gets the current source direction
int	getSourceEnable() Gets the current source enable value
int	getStatus() Gets the board status
boolean	isBuffered() Gets the buffered mode
boolean	isPowerSwitch() Gets the power switch state
boolean	isRefDetect() Gets the reference detect mode
boolean	isUnipolar() Gets the unipolar mode
int	readAdc(int chan, int optns) Reads an ADC channel
int	readRegister(int regnum) Reads a register
float	readTemperature(int optns) Reads the internal temperature sensor
float	readThermistor(int optns) Reads the on-board thermistor
float	readVdd(int optns) Reads the internal voltage monitor
void	setBuffered(boolean enable) Sets the buffered mode
void	setClockSource(int source) Sets the clock source
void	setConvMode(int mode) Sets the conversion mode
void	setConvRate(int rate) Sets the conversion rate
void	setDio(int value) Sets the DIO values
void	setGain(int gain) Sets the ADC gain
void	setPowerSwitch(boolean on) Sets the power switch state
void	setRefDetect(boolean enable) Sets the reference detect mode
void	setRefSelect(int mode) Sets the reference selection
void	setSourceDirection(int dirn) Sets the current source direction
void	setSourceEnable(int enab) Sets the current source enable value
void	setUnipolar(boolean enable) Sets the unipolar mode
void	setupStandard() Performs standard board setup
void	setupThermistor() Sets up for reading the thermistor
void	updateRegister(int regnum, int mask, int value) Updates a register
void	writeRegister(int regnum, int value) Writes a register

Methods inherited from class org.lsst.ccs.drivers.ad.SpiBus

getRdyTimeout, load, readRegister, setRdyTimeout, updateRegister, writeRegister

Methods inherited from class org.lsst.ccs.drivers.ad.Cypress

load, readMemory, readMemory, setReset, writeMemory, writeMemory

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

STATUS_REG

public static final int STATUS_REG

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MODE_REG

public static final int MODE_REG

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CONFIG_REG

public static final int CONFIG_REG

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DATA_REG

public static final int DATA_REG

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ID_REG

public static final int ID_REG

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IO_REG

public static final int IO_REG

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OFFSET_REG

public static final int OFFSET_REG

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SCALE_REG

public static final int SCALE_REG

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COM_READ

public static final int COM_READ

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COM_ADDRESS_M

public static final int COM_ADDRESS_M

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COM_ADDRESS_V

public static final int COM_ADDRESS_V

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COM_CONT_READ

public static final int COM_CONT_READ

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STS_READY

public static final int STS_READY

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STS_ERROR

public static final int STS_ERROR

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STS_NOXREF

public static final int STS_NOXREF

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STS_AD7794

public static final int STS_AD7794

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STS_CHANNEL_M

public static final int STS_CHANNEL_M

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STS_CHANNEL_V

public static final int STS_CHANNEL_V

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MOD_MODE_M

public static final int MOD_MODE_M

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MOD_MODE_V

public static final int MOD_MODE_V

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MODE_CONT

public static final int MODE_CONT

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MODE_SINGLE

public static final int MODE_SINGLE

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MODE_IDLE

public static final int MODE_IDLE

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MODE_PWR_DOWN

public static final int MODE_PWR_DOWN

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MODE_INT_Z_CAL

public static final int MODE_INT_Z_CAL

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MODE_INT_F_CAL

public static final int MODE_INT_F_CAL

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MODE_SYS_Z_CAL

public static final int MODE_SYS_Z_CAL

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MODE_SYS_F_CAL

public static final int MODE_SYS_F_CAL

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MOD_PSW

public static final int MOD_PSW

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MOD_AMP_CM

public static final int MOD_AMP_CM

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MOD_CLOCK_M

public static final int MOD_CLOCK_M

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MOD_CLOCK_V

public static final int MOD_CLOCK_V

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CLOCK_INT

public static final int CLOCK_INT

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CLOCK_INT_AVL

public static final int CLOCK_INT_AVL

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CLOCK_EXT

public static final int CLOCK_EXT

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CLOCK_EXT_HALF

public static final int CLOCK_EXT_HALF

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MOD_CHOP_DIS

public static final int MOD_CHOP_DIS

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MOD_FRS_M

public static final int MOD_FRS_M

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MOD_FRS_V

public static final int MOD_FRS_V

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FRS_RATE_470

public static final int FRS_RATE_470

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FRS_RATE_242

public static final int FRS_RATE_242

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FRS_RATE_123

public static final int FRS_RATE_123

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FRS_RATE_62

public static final int FRS_RATE_62

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FRS_RATE_50

public static final int FRS_RATE_50

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FRS_RATE_39

public static final int FRS_RATE_39

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FRS_RATE_33

public static final int FRS_RATE_33

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FRS_RATE_19

public static final int FRS_RATE_19

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FRS_RATE_17

public static final int FRS_RATE_17

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FRS_RATE_16

public static final int FRS_RATE_16

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FRS_RATE_12

public static final int FRS_RATE_12

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FRS_RATE_10

public static final int FRS_RATE_10

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FRS_RATE_8

public static final int FRS_RATE_8

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FRS_RATE_6

public static final int FRS_RATE_6

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FRS_RATE_4

public static final int FRS_RATE_4

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MOD_STANDARD

public static final int MOD_STANDARD

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CFG_VBIAS_M

public static final int CFG_VBIAS_M

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CFG_VBIAS_V

public static final int CFG_VBIAS_V

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VBIAS_OFF

public static final int VBIAS_OFF

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VBIAS_AIN1

public static final int VBIAS_AIN1

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VBIAS_AIN2

public static final int VBIAS_AIN2

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VBIAS_AIN3

public static final int VBIAS_AIN3

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CFG_BURNOUT

public static final int CFG_BURNOUT

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CFG_UNIPOLAR

public static final int CFG_UNIPOLAR

Public constants

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CFG_BOOST

public static final int CFG_BOOST

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CFG_GAIN_M

public static final int CFG_GAIN_M

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CFG_GAIN_V

public static final int CFG_GAIN_V

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GAIN_1

public static final int GAIN_1

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GAIN_2

public static final int GAIN_2

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GAIN_4

public static final int GAIN_4

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GAIN_8

public static final int GAIN_8

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GAIN_16

public static final int GAIN_16

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GAIN_32

public static final int GAIN_32

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GAIN_64

public static final int GAIN_64

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GAIN_128

public static final int GAIN_128

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RANGE_2500

public static final int RANGE_2500

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RANGE_1250

public static final int RANGE_1250

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RANGE_625

public static final int RANGE_625

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RANGE_312

public static final int RANGE_312

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RANGE_156

public static final int RANGE_156

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RANGE_78

public static final int RANGE_78

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RANGE_39

public static final int RANGE_39

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RANGE_19

public static final int RANGE_19

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CFG_REFSEL_M

public static final int CFG_REFSEL_M

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CFG_REFSEL_V

public static final int CFG_REFSEL_V

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REFSEL_EXT1

public static final int REFSEL_EXT1

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REFSEL_EXT2

public static final int REFSEL_EXT2

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REFSEL_INT

public static final int REFSEL_INT

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CFG_REF_DETECT

public static final int CFG_REF_DETECT

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CFG_BUFFERED

public static final int CFG_BUFFERED

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CFG_CHANNEL_M

public static final int CFG_CHANNEL_M

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CFG_CHANNEL_V

public static final int CFG_CHANNEL_V

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CHAN_AIN1

public static final int CHAN_AIN1

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CHAN_AIN2

public static final int CHAN_AIN2

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CHAN_AIN3

public static final int CHAN_AIN3

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CHAN_AIN4

public static final int CHAN_AIN4

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CHAN_AIN5

public static final int CHAN_AIN5

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CHAN_AIN6

public static final int CHAN_AIN6

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CHAN_TEMP

public static final int CHAN_TEMP

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CHAN_VDD

public static final int CHAN_VDD

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CHAN_AIN1A

public static final int CHAN_AIN1A

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CFG_STANDARD

public static final int CFG_STANDARD

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IO_DIOENA

public static final int IO_DIOENA

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IO_IO2DAT

public static final int IO_IO2DAT

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IO_IO1DAT

public static final int IO_IO1DAT

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IO_IEXCDIR_M

public static final int IO_IEXCDIR_M

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IO_IEXCDIR_V

public static final int IO_IEXCDIR_V

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IEXCDIR_12

public static final int IEXCDIR_12

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IEXCDIR_21

public static final int IEXCDIR_21

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IEXCDIR_11

public static final int IEXCDIR_11

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IEXCDIR_22

public static final int IEXCDIR_22

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IO_IEXCENA_M

public static final int IO_IEXCENA_M

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IO_IEXCENA_V

public static final int IO_IEXCENA_V

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IEXCENA_OFF

public static final int IEXCENA_OFF

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IEXCENA_10

public static final int IEXCENA_10

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IEXCENA_210

public static final int IEXCENA_210

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IEXCENA_1000

public static final int IEXCENA_1000

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IO_STANDARD

public static final int IO_STANDARD

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OPTN_CONFIG

public static final int OPTN_CONFIG

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OPTN_SINGLE

public static final int OPTN_SINGLE

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OPTN_IMMED

public static final int OPTN_IMMED

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DIO_ENABLE

public static final int DIO_ENABLE

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DIO_P1DATA

public static final int DIO_P1DATA

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DIO_P2DATA

public static final int DIO_P2DATA

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HALF_RANGE

public static final float HALF_RANGE

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REF_VOLTAGE

public static final float REF_VOLTAGE

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INT_TEMP_SCALE

public static final float INT_TEMP_SCALE

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INT_VOLT_SCALE

public static final float INT_VOLT_SCALE

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Constructor Detail

Ad7794Eval

public Ad7794Eval()
           throws javax.usb.UsbException

Constructors

Throws:

javax.usb.UsbException

Ad7794Eval

public Ad7794Eval(int index)
           throws javax.usb.UsbException

Throws:

javax.usb.UsbException

Method Detail

commReg

public int commReg(int regnum,
                   boolean read)

Generates communications register value

Specified by:

commReg in class SpiBus

Parameters:

regnum - The register number.

read - True for a read operation, false for a write.

Returns:

The (8-bit) value to be put into the communications register.

setupStandard

public void setupStandard()
                   throws javax.usb.UsbException

Performs standard board setup

Throws:

javax.usb.UsbException

getRegSizes

public int[] getRegSizes()

Gets the array of register sizes

getStatus

public int getStatus()
              throws javax.usb.UsbException

Gets the board status

Throws:

javax.usb.UsbException

setConvMode

public void setConvMode(int mode)
                 throws javax.usb.UsbException

Sets the conversion mode

Parameters:

mode - The mode value to set

Throws:

javax.usb.UsbException

getConvMode

public int getConvMode()
                throws javax.usb.UsbException

Gets the conversion mode

Returns:

The mode value

Throws:

javax.usb.UsbException

setClockSource

public void setClockSource(int source)
                    throws javax.usb.UsbException

Sets the clock source

Parameters:

source - The source value to set

Throws:

javax.usb.UsbException

getClockSource

public int getClockSource()
                   throws javax.usb.UsbException

Gets the clock source

Returns:

The source value

Throws:

javax.usb.UsbException

setPowerSwitch

public void setPowerSwitch(boolean on)
                    throws javax.usb.UsbException

Sets the power switch state

Parameters:

on - Whether or not to set power switch on

Throws:

javax.usb.UsbException

isPowerSwitch

public boolean isPowerSwitch()
                      throws javax.usb.UsbException

Gets the power switch state

Returns:

Whether or not power switch is on

Throws:

javax.usb.UsbException

setConvRate

public void setConvRate(int rate)
                 throws javax.usb.UsbException

Sets the conversion rate

Parameters:

rate - The rate value to set

Throws:

javax.usb.UsbException

getConvRate

public int getConvRate()
                throws javax.usb.UsbException

Gets the conversion rate

Returns:

The conversion rate

Throws:

javax.usb.UsbException

setUnipolar

public void setUnipolar(boolean enable)
                 throws javax.usb.UsbException

Sets the unipolar mode

Parameters:

enable - Whether or not to set unipolar mode

Throws:

javax.usb.UsbException

isUnipolar

public boolean isUnipolar()
                   throws javax.usb.UsbException

Gets the unipolar mode

Returns:

Whether or not unipolar mode is set

Throws:

javax.usb.UsbException

setBuffered

public void setBuffered(boolean enable)
                 throws javax.usb.UsbException

Sets the buffered mode

Parameters:

enable - Whether or not to set buffered mode

Throws:

javax.usb.UsbException

isBuffered

public boolean isBuffered()
                   throws javax.usb.UsbException

Gets the buffered mode

Returns:

Whether or not buffered mode is set

Throws:

javax.usb.UsbException

setRefDetect

public void setRefDetect(boolean enable)
                  throws javax.usb.UsbException

Sets the reference detect mode

Parameters:

enable - Whether or not to set reference detect mode

Throws:

javax.usb.UsbException

isRefDetect

public boolean isRefDetect()
                    throws javax.usb.UsbException

Gets the reference detect mode

Returns:

Whether or not reference detect mode is set

Throws:

javax.usb.UsbException

setRefSelect

public void setRefSelect(int mode)
                  throws javax.usb.UsbException

Sets the reference selection

Parameters:

mode - The reference selection value to set

Throws:

javax.usb.UsbException

getRefSelect

public int getRefSelect()
                 throws javax.usb.UsbException

Gets the reference selection

Returns:

The reference selection value

Throws:

javax.usb.UsbException

setGain

public void setGain(int gain)
             throws javax.usb.UsbException

Sets the ADC gain

Parameters:

gain - The gain value to set

Throws:

javax.usb.UsbException

getGain

public int getGain()
            throws javax.usb.UsbException

Gets the ADC gain

Returns:

The gain value

Throws:

javax.usb.UsbException

setDio

public void setDio(int value)
            throws javax.usb.UsbException

Sets the DIO values

Parameters:

value - The DIO values to set, the OR of the following: DIO_ENABLE: enable digital output DIO_P1DATA: set 1 on pin P1 DIO_P2DATA: set 1 on pin P2

Throws:

javax.usb.UsbException

getDio

public int getDio()
           throws javax.usb.UsbException

Gets the DIO values

Returns:

The DIO values currently set, encoded as follows: DIO_ENABLE: digital output enabled DIO_P1DATA: 1 on pin P1 DIO_P2DATA: 1 on pin P2

Throws:

javax.usb.UsbException

setSourceDirection

public void setSourceDirection(int dirn)
                        throws javax.usb.UsbException

Sets the current source direction

Parameters:

dirn - The direction value to set

Throws:

javax.usb.UsbException

getSourceDirection

public int getSourceDirection()
                       throws javax.usb.UsbException

Gets the current source direction

Returns:

The direction value

Throws:

javax.usb.UsbException

setSourceEnable

public void setSourceEnable(int enab)
                     throws javax.usb.UsbException

Sets the current source enable value

Parameters:

enab - The enable value to set

Throws:

javax.usb.UsbException

getSourceEnable

public int getSourceEnable()
                    throws javax.usb.UsbException

Gets the current source enable value

Returns:

The enable value

Throws:

javax.usb.UsbException

readAdc

public int readAdc(int chan,
                   int optns)
            throws javax.usb.UsbException

Reads an ADC channel

Parameters:

chan - The ADC channel to read (0 - 7)

optns - Options word, composed of the following possible bit masks: OPTN_CONFIG: First configures the conversion mode. OPTN_SINGLE: Configures for a single conversion, otherwise continuous. OPTN_IMMED: Reads the data register immediately instead of waiting for a conversion to complete.

Returns:

The read value (raw counts)

Throws:

javax.usb.UsbException

readTemperature

public float readTemperature(int optns)
                      throws javax.usb.UsbException

Reads the internal temperature sensor

Parameters:

optns - Options word, composed of the following possible bit masks: OPTN_CONFIG: First configures the conversion mode. OPTN_SINGLE: Configures for a single conversion, otherwise continuous. OPTN_IMMED: Reads the data register immediately instead of waiting for a conversion to complete.

Returns:

The read temperature (Celsius)

Throws:

javax.usb.UsbException

readVdd

public float readVdd(int optns)
              throws javax.usb.UsbException

Reads the internal voltage monitor

Parameters:

optns - Options word, composed of the following possible bit masks: OPTN_CONFIG: First configures the conversion mode. OPTN_SINGLE: Configures for a single conversion, otherwise continuous. OPTN_IMMED: Reads the data register immediately instead of waiting for a conversion to complete.

Returns:

The read voltage

Throws:

javax.usb.UsbException

readThermistor

public float readThermistor(int optns)
                     throws javax.usb.UsbException

Reads the on-board thermistor

Parameters:

optns - Options word, composed of the following possible bit masks: OPTN_CONFIG: First configures the conversion mode. OPTN_SINGLE: Configures for a single conversion, otherwise continuous. OPTN_IMMED: Reads the data register immediately instead of waiting for a conversion to complete.

Returns:

The read temperature (Celsius)

Throws:

javax.usb.UsbException

setupThermistor

public void setupThermistor()
                     throws javax.usb.UsbException

Sets up for reading the thermistor

Throws:

javax.usb.UsbException

cleanupThermistor

public void cleanupThermistor()
                       throws javax.usb.UsbException

Cleans up after reading the thermistor

Throws:

javax.usb.UsbException

readRegister

public int readRegister(int regnum)
                 throws javax.usb.UsbException

Reads a register

Parameters:

regnum - The register to read

Returns:

The value read

Throws:

javax.usb.UsbException

writeRegister

public void writeRegister(int regnum,
                          int value)
                   throws javax.usb.UsbException

Writes a register

Parameters:

regnum - The register to write

value - The value to write

Throws:

javax.usb.UsbException

updateRegister

public void updateRegister(int regnum,
                           int mask,
                           int value)
                    throws javax.usb.UsbException

Updates a register

Parameters:

regnum - The register to update

mask - The mask of bits to update

value - The value to write, under the mask

Throws:

javax.usb.UsbException