supleed2/ELEC60013-ES-CW2
1
0
Fork 0
mirror of https://github.com/supleed2/ELEC60013-ES-CW2.git synced 2024-09-19 21:26:17 +00:00
Code Issues Packages Projects Releases Wiki Activity

Added more octaves

Browse source
This commit is contained in:
Kacper 2022-03-23 23:54:47 +00:00
parent a8f6e72473
commit df0957a110
3 changed files with 41 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/knob.cpp
View file

@ -10,6 +10,16 @@ Knob::Knob(int minimum, int maximum) {
Knob::rotation = 0;
}
Knob::Knob(int minimum, int maximum, int initialRotation) {
Knob::minimum = minimum;
Knob::maximum = maximum;
Knob::A = false;
Knob::B = false;
Knob::rotPlusOnePrev = false;
Knob::rotMinOnePrev = false;
Knob::rotation = initialRotation;
}
int Knob::getRotation() {
return Knob::rotation;
};

1
src/knob.h
View file

@ -10,6 +10,7 @@ private:
public:
Knob(int minimum, int max);
Knob(int minimum, int max, int initialRotation);
int getRotation();

41
src/main.cpp
View file

@ -10,19 +10,22 @@ volatile uint8_t keyArray[7];
volatile int8_t volume;
volatile bool volumeFiner;
volatile int8_t wave;
volatile int8_t octave = 4;
int8_t volumeHistory = 0;
SemaphoreHandle_t keyArrayMutex;
Knob K1(0,6);
Knob K3(0,10);
Knob K0(2,14,8); //Octave encoder
Knob K1(0,6); //Waveform encoder
Knob K3(0,10); //Volume encoder
enum waves{SQUARE=0,SAWTOOTH,TRIANGLE,SINE};
#pragma region Config Values
const uint32_t interval = 10; // Display update interval
const uint8_t octave = 4; // Octave to start on
const uint32_t samplingRate = 44100; // Sampling rate
const int32_t stepSizes[] = {
0, 6370029, 6748811, 7150116, 7575284, 8025734, 8502969, 9008582,
0, 3374406, 3575058, 3787642, 4012867, 4251485, 4504291, 4772130,
5055896, 5356535, 5675051, 6012507,
6370029, 6748811, 7150116, 7575284, 8025734, 8502969, 9008582,
9544260, 10111791, 10713070, 11350102, 12025014, 12740059, 13497622,
14300233, 15150569, 16051469, 17005939, 18017164, 19088521, 20223583,
21426140, 22700205, 24050029, 25480118, 26995245, 28600466, 30301138,
@ -30,7 +33,9 @@ const int32_t stepSizes[] = {
48100059, 50960237, 53990491, 57200933, 60602277, 64205876, 68023756,
72068659, 76354085, 80894335, 85704562, 90800821, 96200119, 101920475,
107980982, 114401866, 121204555, 12841175, 136047513, 144137319, 152708170,
161788670, 171409125, 181601642, 192400238}; // Step sizes for each note
161788670, 171409125, 181601642, 192400238, 203840952, 215961966,
228803732, 242409110, 256823506, 272095026, 288274639, 305416341, 323577341,
342818251, 363203285, 384800477, 407681904}; // Step sizes for each note
static unsigned char waveforms[4][18] = {
{0x7f, 0x10, 0x41, 0x10, 0x41, 0x10, 0x41, 0x10, 0x41, 0x10, 0x41, 0x10,
0x41, 0x10, 0x41, 0x10, 0xc1, 0x1f}, //square wave
@ -114,12 +119,24 @@ void setRow(const uint8_t rowIdx) {
digitalWrite(REN_PIN, HIGH);
}
uint32_t scaleVolume(uint32_t Vout){
uint32_t newVout = 0;
if(volumeFiner){
newVout = (Vout*12*volume) >> 16;
}else{ // 25 = floor( (1/10) << 8 )
newVout = (Vout*25*volume) >> 16; //scale by 2*8 cuz 16-bit*8-bit=24-bit -> scale by 16 to get to 8
}
return newVout;
}
//uint32_t combineNotes(uint32_t lol){}
uint16_t getTopKey(volatile uint8_t array[]) {
uint16_t topKey = 0;
for (uint8_t i = 0; i < 3; i++) {
for (uint8_t j = 0; j < 4; j++) {
if (array[i] & (0x1 << j)) {
topKey = (octave - 2) * 12 + i * 4 + j + 1;
topKey = (octave-1) * 12 + i * 4 + j + 1;
}
}
}
@ -138,12 +155,12 @@ void sampleISR(){
}else{
Vout = 0;
}
}else if(wave==TRIANGLE){
//TODO
}else if(wave==SINE){
//TODO
}
if(volumeFiner){
Vout = (Vout*12*volume) >> 16;
}else{ // 25 = floor( (1/10) << 8 )
Vout = (Vout*25*volume) >> 16; //scale by 2*8 cuz 16-bit*8-bit=24-bit -> scale by 16 to get to 8
}
Vout = scaleVolume(Vout);
analogWrite(OUTR_PIN, Vout + 128);
}
@ -164,6 +181,8 @@ void scanKeysTask(void * pvParameters){
xSemaphoreGive(keyArrayMutex);
digitalToggle(LED_BUILTIN);
__atomic_store_n(&currentStepSize, stepSizes[getTopKey(keyArrayCopy)], __ATOMIC_RELAXED);
K0.updateRotation(keyArrayCopy[4] & 0x4, keyArrayCopy[4] & 0x8);
__atomic_store_n(&octave, K0.getRotation()/2, __ATOMIC_RELAXED);
K1.updateRotation(keyArrayCopy[4] & 0x1, keyArrayCopy[4] & 0x2);
__atomic_store_n(&wave, K1.getRotation()/2, __ATOMIC_RELAXED);
if(volumeFiner){