| jerrym | f157933 | 2013-02-07 01:56:28 +0000 | [diff] [blame] | 1 | /*----------------------------------------------------------------------------*/
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| 2 | /* Copyright (c) FIRST 2008. All Rights Reserved. */
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| 3 | /* Open Source Software - may be modified and shared by FRC teams. The code */
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| 4 | /* must be accompanied by the FIRST BSD license file in $(WIND_BASE)/WPILib. */
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| 5 | /*----------------------------------------------------------------------------*/
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| 6 |
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| 7 | #ifndef ANALOG_MODULE_H_
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| 8 | #define ANALOG_MODULE_H_
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| 9 |
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| 10 | #include "ChipObject.h"
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| 11 | #include "Module.h"
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| 12 |
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| 13 | /**
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| 14 | * Analog Module class.
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| 15 | * Each module can independently sample its channels at a configurable rate.
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| 16 | * There is a 64-bit hardware accumulator associated with channel 1 on each module.
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| 17 | * The accumulator is attached to the output of the oversample and average engine so that the center
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| 18 | * value can be specified in higher resolution resulting in less error.
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| 19 | */
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| 20 | class AnalogModule: public Module
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| 21 | {
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| 22 | friend class Module;
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| 23 |
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| 24 | public:
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| 25 | static const long kTimebase = 40000000; ///< 40 MHz clock
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| 26 | static const long kDefaultOversampleBits = 0;
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| 27 | static const long kDefaultAverageBits = 7;
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| 28 | static const float kDefaultSampleRate = 50000.0;
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| 29 |
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| 30 | void SetSampleRate(float samplesPerSecond);
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| 31 | float GetSampleRate();
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| 32 | void SetAverageBits(UINT32 channel, UINT32 bits);
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| 33 | UINT32 GetAverageBits(UINT32 channel);
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| 34 | void SetOversampleBits(UINT32 channel, UINT32 bits);
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| 35 | UINT32 GetOversampleBits(UINT32 channel);
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| 36 | INT16 GetValue(UINT32 channel);
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| 37 | INT32 GetAverageValue(UINT32 channel);
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| 38 | float GetAverageVoltage(UINT32 channel);
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| 39 | float GetVoltage(UINT32 channel);
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| 40 | UINT32 GetLSBWeight(UINT32 channel);
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| 41 | INT32 GetOffset(UINT32 channel);
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| 42 | INT32 VoltsToValue(INT32 channel, float voltage);
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| 43 |
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| 44 | static AnalogModule* GetInstance(UINT8 moduleNumber);
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| 45 |
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| 46 | protected:
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| 47 | explicit AnalogModule(UINT8 moduleNumber);
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| 48 | virtual ~AnalogModule();
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| 49 |
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| 50 | private:
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| 51 | static SEM_ID m_registerWindowSemaphore;
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| 52 |
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| 53 | UINT32 GetNumActiveChannels();
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| 54 | UINT32 GetNumChannelsToActivate();
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| 55 | void SetNumChannelsToActivate(UINT32 channels);
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| 56 |
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| 57 | tAI *m_module;
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| 58 | bool m_sampleRateSet;
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| 59 | UINT32 m_numChannelsToActivate;
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| 60 | };
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| 61 |
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| 62 | #endif
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