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102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
#pragma once
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//
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// FILE: AD985X.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.2.2
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// DATE: 2019-02-08
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// PURPOSE: Class for AD9850 and AD9851 function generator
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//
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// URL: https://github.com/RobTillaart/AD985X
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//
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#include "Arduino.h"
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#include "SPI.h"
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#define AD985X_LIB_VERSION (F("0.2.2"))
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#define AD9850_MAX_FREQ (40UL * 1000UL * 1000UL)
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#define AD9851_MAX_FREQ (70UL * 1000UL * 1000UL)
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class AD9850
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{
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public:
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AD9850();
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// for HW SPI only use lower 3 parameters.
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void begin(int select, int resetPin, int FQUDPin, int dataOut = 0, int clock = 0);
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void reset();
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void powerDown();
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void powerUp();
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void setFrequency(uint32_t freq); // 0..AD9850_MAX_FREQ
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void setFrequencyF(float freq); // works best for lower frequencies.
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float getFrequency() { return _freq; };
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uint32_t getMaxFrequency() { return AD9850_MAX_FREQ; };
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// 0 .. 31 steps of 11.25 degrees
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void setPhase(uint8_t phase = 0);
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uint8_t getPhase() { return (_config >> 3); };
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// offset to calibrate the frequency (internal counter)
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// offset must be stored by the user.
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void setCalibration(int32_t offset = 0) { _offset = offset; };
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int32_t getCalibration() { return _offset; };
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// internal chip factor used for frequency. (debugging only)
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uint32_t getFactor() { return _factor; };
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// autoUpdate is default true;
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void setAutoUpdate(bool update) { _autoUpdate = update; };
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bool getAutoUpdate() { return _autoUpdate; };
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void update();
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protected:
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void pulsePin(uint8_t pin);
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void writeData();
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void swSPI_transfer(uint8_t value);
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bool _useHW = true;
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uint8_t _dataOut = 0;
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uint8_t _clock = 0;
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uint8_t _select = 0;
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float _freq = 1;
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uint32_t _factor = 0;
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uint8_t _config = 0;
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uint8_t _reset = 0;
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uint8_t _fqud = 0;
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int32_t _offset = 0;
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bool _autoUpdate = true;
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};
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class AD9851 : public AD9850
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{
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public:
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void setFrequency(uint32_t freq); // 0..AD9851_MAX_FREQ
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void setFrequencyF(float freq);
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uint32_t getMaxFrequency() { return AD9851_MAX_FREQ; };
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void setRefClockHigh(); // 180 MHz
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void setRefClockLow(); // 30 MHz
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uint8_t getRefClock();
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void setAutoRefClock(bool arc);
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bool getAutoRefClock() { return _autoRefClock; };
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// 10 MHz is default, set in Hz.
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// will be kept <= 30 MHz as that is the freq of LOW mode.
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void setARCCutOffFreq(uint32_t Hz = 10000000UL );
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uint32_t getARCCutOffFreq() { return _ARCCutOffFreq; };
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protected:
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bool _autoRefClock = false;
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uint32_t _ARCCutOffFreq = 10000000UL;
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};
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// -- END OF FILE --
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