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pull/19/head
MrDham 5 years ago committed by GitHub
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commit ad0c37b16e
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  1. 43
      Open_Theremin_V3/application.cpp

@ -3,7 +3,7 @@
#include "application.h"
#include "hw.h"
#include "mcpDac.h"
#include "SPImcpDAC.h"
#include "ihandlers.h"
#include "timer.h"
#include "EEPROM.h"
@ -32,6 +32,7 @@ static uint8_t old_midi_loop_cc_val =0;
static uint8_t midi_velocity = 0;
static uint8_t loop_hand_pos = 0;
static uint8_t new_midi_rod_cc_val =0;
static uint8_t old_midi_rod_cc_val =0;
@ -77,13 +78,13 @@ void Application::setup() {
digitalWrite(Application::LED_PIN_1, HIGH); // turn the LED off by making the voltage LOW
mcpDacInit();
SPImcpDACinit();
EEPROM.get(0,pitchDAC);
EEPROM.get(2,volumeDAC);
mcpDac2ASend(pitchDAC);
mcpDac2BSend(volumeDAC);
SPImcpDAC2Asend(pitchDAC);
SPImcpDAC2Bsend(volumeDAC);
initialiseTimer();
@ -195,6 +196,7 @@ AppMode Application::nextMode() {
void Application::loop() {
int32_t pitch_v = 0, pitch_l = 0; // Last value of pitch (for filtering)
int32_t vol_v = 0, vol_l = 0; // Last value of volume (for filtering)
uint16_t tmpVolume;
uint16_t volumePotValue = 0;
uint16_t pitchPotValue = 0;
@ -281,7 +283,7 @@ void Application::loop() {
// set wave frequency for each mode
switch (_mode) {
case MUTE : /* NOTHING! */; break;
case NORMAL : setWavetableSampleAdvance((pitchCalibrationBase-pitch_v)/registerValue+2048-(pitchPotValue<<2)); break;
case NORMAL : setWavetableSampleAdvance(((pitchCalibrationBase-pitch_v)+2048-(pitchPotValue<<2))/registerValue); break;
};
// HW_LED2_OFF;
@ -306,8 +308,11 @@ void Application::loop() {
// vol_v = vol_v - (1 + MAX_VOLUME - (volumePotValue << 2));
vol_v = vol_v ;
vol_v = max(vol_v, 0);
vScaledVolume = vol_v >> 4;
loop_hand_pos = vol_v >> 4;
// Give vScaledVolume a pseudo-exponential characteristic:
vScaledVolume = loop_hand_pos * (loop_hand_pos + 2);
volumeValueAvailable = false;
}
@ -359,7 +364,7 @@ static long pitchfn = 0;
InitialisePitchMeasurement();
interrupts();
mcpDacInit();
SPImcpDACinit();
qMeasurement = GetQMeasurement(); // Measure Arudino clock frequency
@ -372,24 +377,24 @@ pitchfn = q0-PitchFreqOffset; // Add offset calue to set frequency
mcpDac2BSend(1600);
SPImcpDAC2Bsend(1600);
mcpDac2ASend(pitchXn0);
SPImcpDAC2Asend(pitchXn0);
delay(100);
pitchfn0 = GetPitchMeasurement();
mcpDac2ASend(pitchXn1);
SPImcpDAC2Asend(pitchXn1);
delay(100);
pitchfn1 = GetPitchMeasurement();
while(abs(pitchfn0-pitchfn1)>CalibrationTolerance){ // max allowed pitch frequency offset
mcpDac2ASend(pitchXn0);
SPImcpDAC2Asend(pitchXn0);
delay(100);
pitchfn0 = GetPitchMeasurement()-pitchfn;
mcpDac2ASend(pitchXn1);
SPImcpDAC2Asend(pitchXn1);
delay(100);
pitchfn1 = GetPitchMeasurement()-pitchfn;
@ -425,7 +430,7 @@ static long volumefn = 0;
InitialiseVolumeMeasurement();
interrupts();
mcpDacInit();
SPImcpDACinit();
volumeXn0 = 0;
@ -436,12 +441,12 @@ volumefn = q0-VolumeFreqOffset;
mcpDac2BSend(volumeXn0);
SPImcpDAC2Bsend(volumeXn0);
delay_NOP(44316);//44316=100ms
volumefn0 = GetVolumeMeasurement();
mcpDac2BSend(volumeXn1);
SPImcpDAC2Bsend(volumeXn1);
delay_NOP(44316);//44316=100ms
volumefn1 = GetVolumeMeasurement();
@ -450,11 +455,11 @@ volumefn1 = GetVolumeMeasurement();
while(abs(volumefn0-volumefn1)>CalibrationTolerance){
mcpDac2BSend(volumeXn0);
SPImcpDAC2Bsend(volumeXn0);
delay_NOP(44316);//44316=100ms
volumefn0 = GetVolumeMeasurement()-volumefn;
mcpDac2BSend(volumeXn1);
SPImcpDAC2Bsend(volumeXn1);
delay_NOP(44316);//44316=100ms
volumefn1 = GetVolumeMeasurement()-volumefn;
@ -478,7 +483,7 @@ void Application::hzToAddVal(float hz) {
}
void Application::playNote(float hz, uint16_t milliseconds = 500, uint8_t volume = 255) {
vScaledVolume = volume;
vScaledVolume = volume * (volume + 2);
hzToAddVal(hz);
millitimer(milliseconds);
vScaledVolume = 0;
@ -544,7 +549,7 @@ void Application::midi_application ()
// Calculate loop antena cc value for midi
new_midi_loop_cc_val = vScaledVolume >> 1;
new_midi_loop_cc_val = loop_hand_pos >> 1;
new_midi_loop_cc_val = min (new_midi_loop_cc_val, 127);
delta_loop_cc_val = (double)new_midi_loop_cc_val - (double)old_midi_loop_cc_val;

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