64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
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#include "Waveforms.h"
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#define PWM_BIT_WIDTH 10
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#define PWM_PIN 5 // PWM-Pin für DAC0 auf dem Arduino Nano 328
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int wf_wave0 = 0;
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int wf_pos = 0;
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int wf_sample;
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bool wf_outputEnabled = true; // Variable to control waveform output state
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void initWaveformGenerator()
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{
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setWaveform(WAVEFORM_SINUS);
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// Call the function to set default frequency, here you might want to specify a default frequency
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setWaveformFrequency(WAVEFORM_DEFAULT_FREQ_HZ);
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}
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void setWaveform(int waveform0)
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{
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if (waveform0 >= 0 and waveform0 < WAVEFORM_MAXWAVEFORM_NUM)
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{
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// Set default waveforms
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wf_wave0 = waveform0;
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}
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}
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void setWaveformFrequency(int frequency)
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{
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if (frequency >= 1 and frequency < 8000)
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{
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wf_sample = map(frequency, 0, (2^PWM_BIT_WIDTH)-1, 0, WAVEFORM_ONE_HZ_SAMPLE);
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wf_sample = constrain(wf_sample, 0, WAVEFORM_ONE_HZ_SAMPLE);
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} else {
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wf_sample = map(WAVEFORM_DEFAULT_FREQ_HZ, 0, (2^PWM_BIT_WIDTH)-1, 0, WAVEFORM_ONE_HZ_SAMPLE);
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wf_sample = constrain(wf_sample, 0, WAVEFORM_ONE_HZ_SAMPLE);
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}
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}
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void enableWaveformOutput()
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{
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wf_outputEnabled = true;
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}
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void disableWaveformOutput()
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{
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wf_outputEnabled = false;
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}
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void pollWaveformGenerator()
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{
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if (wf_outputEnabled)
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{
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analogWrite(PWM_PIN, waveformsTable[wf_wave0][wf_pos]); // write the selected waveform on DAC0
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wf_pos++;
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if (wf_pos == WAVEFORM_MAX_SAMPLES_NUM) // Reset the counter to repeat the wave
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wf_pos = 0;
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delayMicroseconds(wf_sample); // Hold the sample value for the sample time
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}
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}
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