claraty::AI

claraty::AI Class Reference
[Hardware Package]

#include <analog_in.h>

Collaboration diagram for claraty::AI:

[legend]List of all members.


Public Member Functions
	AI (AI_impl &ai_impl, int channel=0, float gain=0.0, float offset=0.0)
AI_impl &	impl ()
int	get_channel ()
void	set_gain (float gain)
void	set_offset (float offset)
float	get_gain ()
float	get_offset ()
void	set_gain_for_V ()
void	set_offset_for_V ()
float	input ()
Private Attributes
AI_impl &	_ai_impl
int	_channel
float	_gain
float	_offset

Detailed Description

Analog input class.

Definition at line 46 of file analog_in.h.

Constructor & Destructor Documentation

claraty::AI::AI	(	AI_impl &	ai_impl,
		int	channel = `0`,
		float	gain = `0.0`,
		float	offset = `0.0`
	)

Definition at line 35 of file analog_in.cc.

References _gain, _offset, set_gain_for_V(), and set_offset_for_V().

00035                                                                :
00036   _ai_impl (ai_impl),
00037   _channel (channel),
00038   _gain (gain),
00039   _offset (offset)
00040 {
00041   /*
00042    *    if gain is 0 (default), assume conversion to Volt
00043    */
00044   if (gain == 0.0) {
00045     set_gain_for_V();           // unit in V
00046     set_offset_for_V();         // unit in V
00047   }
00048 
00049 #ifdef VERBOSE
00050   cout << "AI: channel = " << channel << "; gain = " << dec << _gain << "; offset = " << _offset << endl;
00051 #endif
00052 }

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Member Function Documentation

AI_impl& claraty::AI::impl ( ) [inline]

Definition at line 51 of file analog_in.h.

References _ai_impl.

00051 { return _ai_impl;}

int claraty::AI::get_channel ( ) [inline]

Definition at line 52 of file analog_in.h.

References _channel.

00052 { return _channel;}

void claraty::AI::set_gain ( float gain ) [inline]

Definition at line 53 of file analog_in.h.

References _gain.

00053 {_gain = gain;}

void claraty::AI::set_offset ( float offset ) [inline]

Definition at line 54 of file analog_in.h.

References _offset.

00054 {_offset = offset;}

float claraty::AI::get_gain ( ) [inline]

Definition at line 55 of file analog_in.h.

References _gain.

00055 { return _gain;}

float claraty::AI::get_offset ( ) [inline]

Definition at line 56 of file analog_in.h.

References _offset.

00056 { return _offset;}

void claraty::AI::set_gain_for_V ( )

Definition at line 74 of file analog_in.cc.

References _ai_impl, _channel, _gain, and claraty::AI_impl::get_gain_for_V().

Referenced by AI().

00075 {
00076   _gain = _ai_impl.get_gain_for_V(_channel);
00077 }

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void claraty::AI::set_offset_for_V ( )

Definition at line 80 of file analog_in.cc.

References _ai_impl, _channel, _offset, and claraty::AI_impl::get_offset_for_V().

Referenced by AI().

00081 {
00082   _offset = _ai_impl.get_offset_for_V(_channel);
00083 }

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float claraty::AI::input ( )

Definition at line 54 of file analog_in.cc.

References _ai_impl, _channel, _gain, _offset, and claraty::AI_impl::input().

00055 {
00056   float data = (float) _ai_impl.input(_channel);
00057 
00058   // return ( data * _gain + _offset);
00059 
00060   float data2 = data * _gain + _offset;
00061 
00062 #ifdef VERBOSE
00063   cout << "AI::input()" << endl;
00064   cout << " _ai_impl.input(" << dec << _channel <<"): " << endl;
00065   cout << " raw data = " << hex << data << endl;
00066   cout << " gain = " << dec << _gain << "; offset = " << _offset << endl;
00067   cout << " converted data = " << dec << data2 << endl;
00068 #endif
00069 
00070   return data2;
00071 }