com.cinterion.io

Class DAC

java.lang.Object

com.cinterion.io.DAC

public class DAC
extends Object

The DAC class provides the ability to control the Pulse Width Modulation (PWM) of the Digital Analogue Converter outputs. Six different PWM frequencies are supported: 320Hz, 970Hz, 8125Hz, 16250Hz, 32500Hz and 65000Hz. These frequencies are selected by specifying a value from 0 to 5 in the constructor. The duty cycle can then be changed at any point by calling the setDutyCycle method and giving a duty cycle in percentage from 0 to 100 %.

See Also:

ADC

Constructor Summary

Constructors

Constructor and Description
DAC(int pwmChannel) Gets PWM frequency and duty cycle values of already active DAC channel i.e.
DAC(int pwmFreq, int startDutyCycle) Deprecated. use DAC(int, int, int) instead
DAC(int pwmChannel, int pwmFreq, int startDutyCycle) Creates a new instance of the DAC class.

Method Summary

Methods

Modifier and Type	Method and Description
int	getDutyCycle() Gets the current duty cycle.
int	getPwmFreq() Gets the current PWM frequency.
void	release() Releases all HW resources.
void	setDutyCycle(int dutyCycle) Sets the duty cycle.

Methods inherited from class java.lang.Object

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

Constructor Detail

DAC

public DAC(int pwmChannel,
   int pwmFreq,
   int startDutyCycle)
    throws IOException

Creates a new instance of the DAC class.

Parameters:

pwmChannel - Selects PWM channel for signal generation. Valid values are from 0 to 1.

pwmFreq - Selects the PWM frequency. Valid values are from 0 to 5.

startDutyCycle - Initial duty cycle in percentage steps. Valid values are from 0 to 100.

Throws:

IOException - if an error occurs

DAC

public DAC(int pwmFreq,
   int startDutyCycle)
    throws IOException

Deprecated. use DAC(int, int, int) instead

Creates a new instance of the DAC class.

Parameters:

pwmFreq - Selects the PWM frequency. Valid values are from 0 to 5.

startDutyCycle - Initial duty cycle in percentage steps. Valid values are from 0 to 100.

Throws:

IOException - if an error occurs

DAC

public DAC(int pwmChannel)
    throws IOException

Gets PWM frequency and duty cycle values of already active DAC channel i.e. after module restart.

Parameters:

pwmChannel - Selects PWM channel for acquisition of current settings. Valid values are from 0 to 1.

Throws:

IOException - if DAC channel is not active or an error occurs

Method Detail

setDutyCycle

public void setDutyCycle(int dutyCycle)
                  throws IOException

Sets the duty cycle.

Parameters:

dutyCycle - Duty cycle in percentage steps. Valid values are from 0 to 100.

Throws:

IOException - if an error occurs

See Also:

getDutyCycle()

getDutyCycle

public int getDutyCycle()

Gets the current duty cycle.

Returns:

The current duty cycle in percentage steps. Values are from 0 to 100.

See Also:

getDutyCycle()

getPwmFreq

public int getPwmFreq()

Gets the current PWM frequency.

Returns:

The current PWM frequency. Values are from 0 to 5.

release

public void release()
             throws IOException

Releases all HW resources.

Throws:

IOException - if an error occurs

See Also:

DAC