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LedCube/LedCube/LedCube.ino

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C++
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/*
* Copyright (c) 2018, Lionel Adrien Sambuc
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* This program was created from a mix of several sources for the inspiration
* on how to implement the system. I especially followed:
* http://www.instructables.com/id/4x4x4-LED-Cube-Arduino-Uno/ for the
* construction of the hardware.
*
* The main idea is to keep two memory frame (3d) buffer. In order to refresh
* those we use a handler triggered through a timer, set for a period of
* ``FRAME_PERIOD''. Every period the whole cube needs to be redrawn, but as
* we have multiplexing, this means that each layer has only a fourth of the
* frame period to be turned on for the maximum brightness. In order to
* provide multiple brightness levels, a PWM-like signal is manually
* generated, per led, per layer, by turning it on for a percentage of the
* layer time only.
*/
/* Either 1 (Enabled) or 0 (disabled) */
#define DEBUG 0
#include "FrameBuffer.h"
#if DEBUG
#define DEBUG_SETUP 1
#define DEBUG_LOOP 1
#endif
/******************************* ANIMATIONS ********************************/
/* Taken from PWMallPins.pde by Paul Badger, 2007;
* formatted by Seth Wolf, 2015 */
// Preset 256 values of a binary conversions of a sine wave
unsigned char sinewave[] = {
0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95,0x98,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,
0xb0,0xb3,0xb6,0xb9,0xbc,0xbf,0xc1,0xc4,0xc7,0xc9,0xcc,0xce,0xd1,0xd3,0xd5,0xd8,
0xda,0xdc,0xde,0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xed,0xef,0xf0,0xf2,0xf3,0xf5,
0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfc,0xfd,0xfe,0xfe,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfe,0xfd,0xfc,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,
0xf6,0xf5,0xf3,0xf2,0xf0,0xef,0xed,0xec,0xea,0xe8,0xe6,0xe4,0xe2,0xe0,0xde,0xdc,
0xda,0xd8,0xd5,0xd3,0xd1,0xce,0xcc,0xc9,0xc7,0xc4,0xc1,0xbf,0xbc,0xb9,0xb6,0xb3,
0xb0,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x98,0x95,0x92,0x8f,0x8c,0x89,0x86,0x83,
0x80,0x7c,0x79,0x76,0x73,0x70,0x6d,0x6a,0x67,0x63,0x60,0x5d,0x5a,0x57,0x54,0x51,
0x4f,0x4c,0x49,0x46,0x43,0x40,0x3e,0x3b,0x38,0x36,0x33,0x31,0x2e,0x2c,0x2a,0x27,
0x25,0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,0x15,0x13,0x12,0x10,0x0f,0x0d,0x0c,0x0a,
0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x03,0x02,0x01,0x01,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x05,0x06,0x07,0x08,
0x09,0x0a,0x0c,0x0d,0x0f,0x10,0x12,0x13,0x15,0x17,0x19,0x1b,0x1d,0x1f,0x21,0x23,
0x25,0x27,0x2a,0x2c,0x2e,0x31,0x33,0x36,0x38,0x3b,0x3e,0x40,0x43,0x46,0x49,0x4c,
0x4f,0x51,0x54,0x57,0x5a,0x5d,0x60,0x63,0x67,0x6a,0x6d,0x70,0x73,0x76,0x79,0x7c
};
/**
* Increase by steps the luminosity, then dim by steps the whole cube.
*
* Mainly useful as a test of the led cube.
*/
void levels(void) {
for(int i = 0; i < BRIGHTNESS_MAX; i++) {
FrameBufferSet(i);
FrameBufferSwitch();
delay(100);
}
for(int i = BRIGHTNESS_MAX; i >= 0; i--) {
FrameBufferSet(i);
FrameBufferSwitch();
delay(100);
}
}
/**
* Increase by steps the luminosity, then dim by steps the whole cube.
*
* Mainly useful as a test of the led cube.
*/
void testfreq(void) {
FrameBufferSet(255);
FrameBufferSwitch();
delay(200);
FrameBufferSet(1);
FrameBufferSwitch();
delay(200);
}
/**
* Blinks the whole cube on and off with a period `period`.
*/
void blinkWholeCube(int period /* [ms] */) {
FrameBufferSet(255);
FrameBufferSwitch();
delay(period >> 1);
FrameBufferBlank();
FrameBufferSwitch();
delay(period >> 1);
}
/**
* Fade in and out following a sine curve with a period `period`.
*/
void sine(int period /* [ms] */) {
for(short int i = 0; i < BRIGHTNESS_MAX; i++) {
FrameBufferSet(sinewave[i]);
FrameBufferSwitch();
delay(period / BRIGHTNESS_MAX);
}
}
/**
* Fade in and out following a sine curve with a period `period`, but only a
* small 2x2x2 cube in the center.
*/
void sine2(int period /* [ms] */) {
for(short int i = 0; i < BRIGHTNESS_MAX; i++) {
FrameBufferBlank();
for (char x = 1; x < 3; x++) {
for (char y = 1; y < 3; y++) {
for (char z = 1; z < 3; z++) {
FrameBufferWrite(x, y, z, sinewave[i]);
}
}
}
FrameBufferSwitch();
delay(period / BRIGHTNESS_MAX);
}
}
/**
* Fade in and out following a sine curve with a period `period` the entire
* cube, but with the center 2x2x2 cube dephased by 180°.
*/
void sine3(int period /* [ms] */) {
for(int i = 0; i < 256; i++) {
FrameBufferBlank();;
for (unsigned char x = 1; x < 3; x++) {
for (unsigned char y = 1; y < 3; y++) {
for (unsigned char z = 1; z < 3; z++) {
FrameBufferWrite(x, y, z, sinewave[i]);
}
}
}
for (unsigned char x = 0; x < MAX_X; x++) {
for (unsigned char y = 0; y < MAX_Y; y++) {
for (unsigned char z = 0; z < MAX_Z; z++) {
if ( ((x == 0) || (x == 3))
||((y == 0) || (y == 3))
||((z == 0) || (z == 3))) {
FrameBufferWrite(x, y, z, sinewave[(i+128)%256]);
}
}
}
}
FrameBufferSwitch();
delay(period / BRIGHTNESS_MAX);
}
}
/**
* Random rain drpos fall to the bottom of the cube
*/
void randomRain(void) {
for (unsigned char a = MAX_Z; a > 0; a--) {
// animation of 4 steps, requiring computing 4 full frames
for (unsigned char x = 0; x < MAX_X; x++) {
for (unsigned char y = 0; y < MAX_Y; y++) {
FrameBufferWrite(x, y, 3,
(random(0, 4) == 0) ? 1 : random(0, BRIGHTNESS_MAX));
FrameBufferCopy(x, y, 2, x, y, 3);
FrameBufferCopy(x, y, 1, x, y, 2);
FrameBufferCopy(x, y, 0, x, y, 1);
}
}
FrameBufferSwitch();
delay(500);
}
}
/********************************** BODY ***********************************/
void setup(void)
{
#if DEBUG_SETUP
static long timeStartSetup = micros();
#endif
// Seeding random for random pattern
randomSeed(analogRead(10));
FrameBufferInit();
#if DEBUG
Serial.begin(9600);
Serial.println("\nSetup DONE");
#endif
#if DEBUG_SETUP
Serial.print("Setup Time: ");
Serial.println((micros() - timeStartSetup), DEC);
#endif
}
void loop(void) {
static char a = -1;
#if DEBUG_LOOP
static long timeStartLoop = micros();
#endif
a = ((a+1) % 9);
for (int j = 0; j < 10; j++) {
switch(a) {
case 0: sine2(2000); break;
case 1: randomRain(); break;
case 2: sine3(2000); break;
case 3: blinkWholeCube(1000); break;
case 4: sine(2000); break;
case 5: printAllSymbols(); break;
case 6: FrameBufferWriteStr("hello world", 250, 255);
delay(1000);
break;
case 7: testfreq(); break;
case 8: levels(); break;
default: break;
}
}
#if DEBUG_LOOP
Serial.print("Loop Time: ");
Serial.println((micros() - timeStartLoop), DEC);
#endif
}
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