File content as of revision 32:7b60b9add4b5:

#include "mbed.h"
#include "WS2811.h"
#include "Colors.h"
#include "TSISensor.h"
#include "MMA8451Q.h"

#define MMA8451_I2C_ADDRESS (0x1d<<1)

// per LED: 3 * 20 mA = 60mA max
// 60 LEDs: 60 * 60mA = 3600 mA max
// 120 LEDs: 7200 mA max
unsigned const nLEDs = MAX_LEDS_PER_STRIP;

// I/O pin usage
// PTD0 TPM0 CH0 monitor
// PTD1 TPM0 CH1 monitor
// PTD2 data output
// PTD3 debug output

unsigned const DATA_OUT_PIN1 = 2; // PTD2
unsigned const DATA_OUT_PIN2 = 3; // PTD3

Serial pc(USBTX, USBRX);
Timer timeRunning;

TSISensor touchSensor;
MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS);
PwmOut rled(LED_RED);
PwmOut gled(LED_GREEN);
// LED_BLUE is on PTD1

float touchPercentage;
unsigned frames;

float const minBrite = 0.2;
float const maxBrite = 0.5;
float brite;

void readTouchSensor()
{
    touchPercentage *= 0.9;
    touchPercentage += touchSensor.readPercentage() * 0.1;
    brite = minBrite + (maxBrite - minBrite) * touchPercentage;
}

// @brief sets different colors in each of the LEDs of a strip
// @param strip the light strip
// @param sat saturation, 0.0 - 1.0
// @param brite brightness, 0.0 - 1.0
// @param hueShift shift, 0.0 - 1.0 is equivalent to 0 - 360 degrees
static void showRainbow(WS2811 &strip, float sat, float brite, float hueShift)
{
    unsigned nLEDs = strip.numPixels();
    for (unsigned i = 0; i < nLEDs; i++) {
        uint8_t r, g, b;
        float hue = ((float)i / (float)nLEDs) + hueShift;
        HSBtoRGB(hue, sat, brite, &r, &g, &b);
        strip.setPixelColor(i, r, g, b);
    }
    strip.show();
}

static void clearScreen(WS2811 &strip)
{
    unsigned nLEDs = strip.numPixels();
    for (unsigned i = 0; i < nLEDs; i++) {
        strip.setPixelColor(i, 0, 0, 0);
    }
    strip.show();
}

int main(void)
{
    pc.baud(9600);
    WS2811 lightStrip1(nLEDs, DATA_OUT_PIN1);
    WS2811 lightStrip2(nLEDs, DATA_OUT_PIN2);

    lightStrip1.begin();
    lightStrip2.begin();
    rled = 1.0;
    gled = 1.0;

    float sat = 1.0;

    timeRunning.start();


    uint8_t q = 0;
    char char_buff[6];
    for (;;) {
        if(pc.readable()){
            if(pc.getc()==255){
                while(q < 6){
                    while(!pc.readable());
                    char_buff[q] = pc.getc();
                    pc.putc(char_buff[q]);
                    if(char_buff[q] == 254)
                        break;
                    q++;
                }

                if(q >= 4){
                    lightStrip1.setPixelColor(int(char_buff[0])+8*char_buff[1], int(char_buff[2]), int(char_buff[3]), int(char_buff[4]));                    
                    lightStrip1.show();
                }
                else{
                    clearScreen(lightStrip1);
                }
                q = 0;
                WS2811::startDMA();
            }    
        }


        frames ++;
    }
}