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@22:abfed71656bd, 2014-01-02 (annotated)

Committer:
bikeNomad
Date:
Thu Jan 02 02:31:24 2014 +0000
Revision:
22:abfed71656bd
Parent:
21:4541da183397
Child:
23:33df42ff2541
Changed to 60 LEDs maximum. Reduced brightness.

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 22:abfed71656bd 5 // per LED: 3x 20 mA = 60mA
bikeNomad 22:abfed71656bd 6 // 4x full brightness = 0.33A at 5V.
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 static void showTestPattern(WS2811 &strip)
bikeNomad 22:abfed71656bd 37 {
bikeNomad 22:abfed71656bd 38 unsigned nLEDs = strip.numPixels();
bikeNomad 22:abfed71656bd 39 for (unsigned i = 0; i < nLEDs; i++)
bikeNomad 22:abfed71656bd 40 {
bikeNomad 22:abfed71656bd 41 strip.setPixelColor(i, LedStrip::Color(0xff,0,0xAA));
bikeNomad 22:abfed71656bd 42 }
bikeNomad 22:abfed71656bd 43 strip.show();
bikeNomad 22:abfed71656bd 44 }
bikeNomad 22:abfed71656bd 45
bikeNomad 22:abfed71656bd 46 int main(void)
bikeNomad 22:abfed71656bd 47 {
bikeNomad 22:abfed71656bd 48 pc.baud(115200);
bikeNomad 22:abfed71656bd 49 pc.printf("\r\nLEDs: %d\r\n", nLEDs);
bikeNomad 22:abfed71656bd 50
bikeNomad 22:abfed71656bd 51 WS2811 lightStrip(nLEDs, DATA_OUT_PIN);
bikeNomad 22:abfed71656bd 52
bikeNomad 22:abfed71656bd 53 lightStrip.begin();
bikeNomad 22:abfed71656bd 54
bikeNomad 22:abfed71656bd 55 float sat = 1.0; // color saturation, 0.0 to 1.0
bikeNomad 22:abfed71656bd 56 float brite = 0.1; // 1.0 is full brightness, which is VERY bright!
bikeNomad 22:abfed71656bd 57 float hueShift = 0.0;
bikeNomad 22:abfed71656bd 58 float hueShiftIncrement = 1.0 / (360.0 / nLEDs);
bikeNomad 22:abfed71656bd 59
bikeNomad 22:abfed71656bd 60 Timer advance;
bikeNomad 22:abfed71656bd 61 advance.start();
bikeNomad 22:abfed71656bd 62
bikeNomad 22:abfed71656bd 63 for (;;) {
bikeNomad 22:abfed71656bd 64 advance.reset();
bikeNomad 22:abfed71656bd 65
bikeNomad 22:abfed71656bd 66 // showTestPattern(lightStrip);
bikeNomad 22:abfed71656bd 67 showRainbow(lightStrip, sat, brite, hueShift);
bikeNomad 22:abfed71656bd 68 hueShift += hueShiftIncrement;
bikeNomad 22:abfed71656bd 69
bikeNomad 22:abfed71656bd 70 while (advance.read_ms() < 100)
bikeNomad 22:abfed71656bd 71 __NOP();
bikeNomad 22:abfed71656bd 72 }
bikeNomad 22:abfed71656bd 73 }
bikeNomad 22:abfed71656bd 74