Antonio De Lima Fernandes / Mbed 2 deprecated GUILED_8x8_Demo

Simple 8x8 LED Matrix controller which interfaces with a Processing GUI over serial to display sketches

Dependencies:   Multi_WS2811 mbed

Fork of Multi_WS2811_test by Ned Konz

main.cpp@23:33df42ff2541, 2014-01-02 (annotated)

Committer:
bikeNomad
Date:
Thu Jan 02 10:30:25 2014 +0000
Revision:
23:33df42ff2541
Parent:
22:abfed71656bd
Child:
24:feb1dae0403a
smoothed animation; added frames/sec count (now at 341 for rainbow)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bikeNomad 22:abfed71656bd 1 #include "mbed.h"
bikeNomad 22:abfed71656bd 2 #include "WS2811.h"
bikeNomad 22:abfed71656bd 3 #include "Colors.h"
bikeNomad 22:abfed71656bd 4
bikeNomad 23:33df42ff2541 5 // per LED: 3 * 20 mA = 60mA max
bikeNomad 23:33df42ff2541 6 // 60 LEDs: 60 * 60mA = 3600 mA max
bikeNomad 22:abfed71656bd 7 unsigned const nLEDs = MAX_LEDS_PER_STRIP;
bikeNomad 22:abfed71656bd 8
bikeNomad 22:abfed71656bd 9 // I/O pin usage
bikeNomad 22:abfed71656bd 10 // PTD0 TPM0 CH0 monitor
bikeNomad 22:abfed71656bd 11 // PTD1 TPM0 CH1 monitor
bikeNomad 22:abfed71656bd 12 // PTD2 data output
bikeNomad 22:abfed71656bd 13 // PTD3 debug output
bikeNomad 22:abfed71656bd 14
bikeNomad 22:abfed71656bd 15 unsigned const DATA_OUT_PIN = 2; // PTD2
bikeNomad 22:abfed71656bd 16
bikeNomad 22:abfed71656bd 17 Serial pc(USBTX, USBRX);
bikeNomad 22:abfed71656bd 18
bikeNomad 22:abfed71656bd 19 // @brief sets different colors in each of the LEDs of a strip
bikeNomad 22:abfed71656bd 20 // @param strip the light strip
bikeNomad 22:abfed71656bd 21 // @param sat saturation, 0.0 - 1.0
bikeNomad 22:abfed71656bd 22 // @param brite brightness, 0.0 - 1.0
bikeNomad 22:abfed71656bd 23 // @param hueShift shift, 0.0 - 1.0 is equivalent to 0 - 360 degrees
bikeNomad 22:abfed71656bd 24 static void showRainbow(WS2811 &strip, float sat, float brite, float hueShift)
bikeNomad 22:abfed71656bd 25 {
bikeNomad 22:abfed71656bd 26 unsigned nLEDs = strip.numPixels();
bikeNomad 22:abfed71656bd 27 for (unsigned i = 0; i < nLEDs; i++) {
bikeNomad 22:abfed71656bd 28 uint8_t r, g, b;
bikeNomad 22:abfed71656bd 29 float hue = ((float)i / (float)nLEDs) + hueShift;
bikeNomad 22:abfed71656bd 30 HSBtoRGB(hue, sat, brite, &r, &g, &b);
bikeNomad 22:abfed71656bd 31 strip.setPixelColor(i, LedStrip::Color(r, g, b));
bikeNomad 22:abfed71656bd 32 }
bikeNomad 22:abfed71656bd 33 strip.show();
bikeNomad 22:abfed71656bd 34 }
bikeNomad 20:b9d76e567637 35
bikeNomad 22:abfed71656bd 36 int main(void)
bikeNomad 22:abfed71656bd 37 {
bikeNomad 22:abfed71656bd 38 pc.baud(115200);
bikeNomad 22:abfed71656bd 39 WS2811 lightStrip(nLEDs, DATA_OUT_PIN);
bikeNomad 22:abfed71656bd 40
bikeNomad 22:abfed71656bd 41 lightStrip.begin();
bikeNomad 22:abfed71656bd 42
bikeNomad 23:33df42ff2541 43 float brite = 0.2; // 1.0 is full brightness, which is VERY bright!
bikeNomad 23:33df42ff2541 44 float rainbowPeriod = 1 * 1.0e6; // usec
bikeNomad 23:33df42ff2541 45 float sat = 1.0;
bikeNomad 22:abfed71656bd 46
bikeNomad 23:33df42ff2541 47 Timer timeRunning;
bikeNomad 23:33df42ff2541 48 timeRunning.start();
bikeNomad 23:33df42ff2541 49 bool printed = false;
bikeNomad 23:33df42ff2541 50 unsigned frames = 0;
bikeNomad 22:abfed71656bd 51
bikeNomad 22:abfed71656bd 52 for (;;) {
bikeNomad 23:33df42ff2541 53 unsigned running = timeRunning.read_us();
bikeNomad 23:33df42ff2541 54 float hueShift = running / rainbowPeriod;
bikeNomad 23:33df42ff2541 55 if (!printed && running >= 10000000U) {
bikeNomad 23:33df42ff2541 56 pc.printf("%u frames in %u usec = %u frames / sec\r\n", frames, running, frames * 1000000 / running);
bikeNomad 23:33df42ff2541 57 printed = true;
bikeNomad 23:33df42ff2541 58 }
bikeNomad 22:abfed71656bd 59 showRainbow(lightStrip, sat, brite, hueShift);
bikeNomad 23:33df42ff2541 60 frames ++;
bikeNomad 23:33df42ff2541 61 }
bikeNomad 22:abfed71656bd 62 }
bikeNomad 22:abfed71656bd 63