File content as of revision 4:d9a72e07749f:

/*
 * Nucleo RTOS Sequencer User Interface Test.
 *
 * 2016.05.27
 *
 */
 
#include "mbed.h"
#include "rtos.h"
#include "PinDetect.h"
#include "RotaryEncoder.h"
#include "N5110.h"
#include "AverageAnalogIn.h"

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

// 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);
DigitalOut CheckPin(PC_8);

// Grobal Variables
struct Sequence {
    bool noteOn;
    int octave;
    int pitch;
    bool tie;
    bool accent;
} Sequence[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;

void updateLCD()
{
    char buff[20];
    
    //Lcd.clear();
    sprintf(buff, "Note#: %d  ", currentNote);
    Lcd.printString(buff, 0, 0);
    sprintf(buff, "pitch: %d  ", Sequence[currentNote].pitch);
    Lcd.printString(buff, 0, 1);
    sprintf(buff, "octave: %d  " ,Sequence[currentNote].octave);
    Lcd.printString(buff, 0, 2);
    sprintf(buff, "%1d %1d %1d %1d %3d", 
        Sequence[currentNote].noteOn, Sequence[currentNote].tie, Sequence[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()
{
    Sequence[currentNote].octave++;
    isDirty = true;
    printf("swOctaveUpPressed\r\n");
}

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

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

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

void swAccentPressed()
{
    Sequence[currentNote].accent = !Sequence[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 != Sequence[currentNote].pitch) {
            Sequence[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);
    }
}

int main()
{
    printf("\n\n\r*** RTOS UI Test ***\r\n");

    // 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);
    
    // Main loop
    while (true) {
        CheckPin = !CheckPin;
        if (isDirty) {
            updateLCD();
            isDirty = false;
        }
    }
}