File content as of revision 5:e4b68faa6801:

/*
 * Nucleo SPI Sequencer
 *
 * 2016.06.12
 *
 */
 
#include "mbed.h"
#include "rtos.h"
#include "PinDetect.h"
#include "RotaryEncoder.h"
#include "N5110.h"
#include "AverageAnalogIn.h"
#include "SpiSequenceSender.h"

#define SPI_RATE    (8000000)

#define SEQUENCE_N  (16)
#define OCTAVE_MIN  (-1)
#define OCTAVE_MAX  (1)
#define PITCH_MAX   (12)

DigitalOut CheckPin(PC_8);

//------------------------------------------------------------------------
// SPI Sequencer
//------------------------------------------------------------------------
SPI spiMaster(SPI_MOSI, SPI_MISO, SPI_SCK);
Sequence sequence[SEQUENCE_N];
SpiSequenceSender sequenceSender(&spiMaster, D10, sequence, SEQUENCE_N, 5);

//------------------------------------------------------------------------
// User Interface
//------------------------------------------------------------------------
// SPI2 Morpho
//        VCC,   SCE,  RST,  D/C,   MOSI,  SCLK,  LED
N5110 Lcd(PA_12, PB_1, PB_2, PB_12, PB_15, PB_13, PA_11);

RotaryEncoder RotEnc1(D2, D3, 0, SEQUENCE_N - 1, 0);
RotaryEncoder RotEnc2(D4, D5, 0, PITCH_MAX, 0);

AverageAnalogIn Pots[] = {
    AverageAnalogIn(A0),
    AverageAnalogIn(A1),
    AverageAnalogIn(A2),
    AverageAnalogIn(A3),
    AverageAnalogIn(A4),
};

PinDetect Pins[] = {
    PinDetect(PA_13, PullUp),
    PinDetect(PA_14, PullUp),
    PinDetect(PA_15, PullUp),
    PinDetect(PB_7,  PullUp),
    PinDetect(PC_13, PullUp),
    PinDetect(PB_10, PullUp),
    PinDetect(PA_8,  PullUp),
};

//DigitalOut Led1(LED1);


// Grobal Variables
struct sSequence {
    bool noteOn;
    int octave;
    int pitch;
    bool tie;
    bool accent;
} sSequence[SEQUENCE_N];

struct Oscillator {
    int waveForm;
    int pulseWidth;    
} Oscillator;

struct Filter {
    int cutOff;
    int resonance;
    int envMod;
} Filter;

int currentNote = 0;
int tempo = 120;
bool isRunning = true;
bool isDirty = true;

//------------------------------------------------------------------------
// Fuctions
//------------------------------------------------------------------------
void updateLCD()
{
    char buff[20];
    
    //Lcd.clear();
    sprintf(buff, "Note#: %d  ", currentNote);
    Lcd.printString(buff, 0, 0);
    sprintf(buff, "pitch: %d  ", sSequence[currentNote].pitch);
    Lcd.printString(buff, 0, 1);
    sprintf(buff, "octave: %d  " ,sSequence[currentNote].octave);
    Lcd.printString(buff, 0, 2);
    sprintf(buff, "%1d %1d %1d %1d %3d", 
        sSequence[currentNote].noteOn, sSequence[currentNote].tie, sSequence[currentNote].accent,
        isRunning, Oscillator.waveForm);
    Lcd.printString(buff, 0, 3);
    sprintf(buff, "%3d %3d %3d", Oscillator.pulseWidth, Filter.envMod, tempo);
    Lcd.printString(buff, 0, 4);
    sprintf(buff, "%3d %3d", Filter.cutOff, Filter.resonance);
    Lcd.printString(buff, 0, 5);
    Lcd.refresh();
}

//------------------------------------------------------------------------
// CallBack routines
//------------------------------------------------------------------------
void swOctaveUpPressed()
{
    sSequence[currentNote].octave++;
    isDirty = true;
    printf("swOctaveUpPressed\r\n");
}

void swOctaveDownPressed()
{
    sSequence[currentNote].octave--;
    isDirty = true;
    printf("swOctaveDownPressed\r\n");
}

void swNoteOnOffPressed()
{
    sSequence[currentNote].noteOn = !sSequence[currentNote].noteOn;
    isDirty = true;
    printf("swNoteOnOffPressed\r\n");
}

void swTiePressed()
{
    sSequence[currentNote].tie = !sSequence[currentNote].tie;
    isDirty = true;
    printf("swTiePressed\r\n");
}

void swAccentPressed()
{
    sSequence[currentNote].accent = !sSequence[currentNote].accent;
    isDirty = true;
    printf("swAccentPressed\r\n");
}

void swRunStopPressed()
{
    isRunning = !isRunning;
    isDirty = true;
    printf("swRunStopPressed\r\n");
}

void swWaveFormPressed()
{
    Oscillator.waveForm++;
    isDirty = true;
    printf("swWaveFormPressed\r\n");
}

//------------------------------------------------------------------------
// Thread
//------------------------------------------------------------------------
/*
void ledThread(void const *argument)
{
    while (true) {
        Led1 = !Led1;
        Thread::wait(500);
    }
}
*/

void pollingRotEncs(void const *argument)
{
    while (true) {
        int _note = RotEnc1.getVal();
        if (_note != currentNote) {
            currentNote = _note;
            isDirty = true;
        }
        int _pitch = RotEnc2.getVal();
        if (_pitch != sSequence[currentNote].pitch) {
            sSequence[currentNote].pitch = _pitch;
            isDirty = true;
        }
        Thread::wait(10);
    }
}

void pollingPots(void const *argument)
{
    unsigned short tmp;
    
    while (true) {
        // pulse width
        tmp = Pots[0].read_u16() >> 9;    // 7bit witdth
        if (tmp != Oscillator.pulseWidth) {
            Oscillator.pulseWidth = tmp;
            isDirty = true;
        }
        // filter envelope moduration 
        tmp = Pots[1].read_u16() >> 9;    // 7bit witdth
        if (tmp != Filter.envMod) {
            Filter.envMod = tmp;
            isDirty = true;
        }
        // tempo
        tmp = Pots[2].read_u16() >> 9;    // 7bit witdth
        if (tmp != tempo) {
            tempo = tmp;
            isDirty = true;
        }
        // cutoff
        tmp = Pots[3].read_u16() >> 10;    // 6bit witdth
        if (tmp != Filter.cutOff) {
            Filter.cutOff = tmp;
            isDirty = true;
        }
        // resonance
        tmp = Pots[4].read_u16() >> 10;    // 6bit witdth
        if (tmp != Filter.resonance) {
            Filter.resonance = tmp;
            isDirty = true;
        }
        Thread::wait(20);
    }
}

//------------------------------------------------------------------------
// Main routine
//------------------------------------------------------------------------
int main()
{
    printf("\n\n\r*** RTOS UI Test ***\r\n");
    
    spiMaster.format(0, 8);
    spiMaster.frequency(SPI_RATE);

    // Init devices
    RotEnc1.setInterval(500);
    RotEnc2.setInterval(500);
    
    Pins[0].attach_asserted(&swOctaveUpPressed);
    Pins[1].attach_asserted(&swOctaveDownPressed);
    Pins[2].attach_asserted(&swNoteOnOffPressed);
    Pins[3].attach_asserted(&swTiePressed);
    Pins[4].attach_asserted(&swAccentPressed);
    Pins[5].attach_asserted(&swRunStopPressed);
    Pins[6].attach_asserted(&swWaveFormPressed);
    for (int i = 0; i < 7; i++) {
        Pins[i].setAssertValue(0);
        Pins[i].setSampleFrequency();
    }
    
    Lcd.init();
    Lcd.normalMode();      // normal colour mode
    Lcd.setBrightness(0.5); // put LED backlight on 50%
    
    // Thread start
    //Thread thLed(ledThread, NULL, osPriorityNormal, DEFAULT_STACK_SIZE);
    Thread thRotEnc(pollingRotEncs, NULL, osPriorityNormal, DEFAULT_STACK_SIZE);
    Thread thPots(pollingPots, NULL, osPriorityNormal, DEFAULT_STACK_SIZE);

    for (int i = 0; i < SEQUENCE_N; i++) {
        Sequence& seq = sequenceSender.getSequences()[i];
        seq.setPitch(0);
        seq.setOctave(0);
        seq.tie = false;
    }
    sequenceSender.run(0);
    
    // Main loop
    while (true) {
        CheckPin = !CheckPin;
        if (isDirty) {
            updateLCD();
            isDirty = false;
        }
    }
}