Arduino Tlc5940 Library: tlc_animations.h Source File

00001 /*  Copyright (c) 2009 by Alex Leone <acleone ~AT~ gmail.com>
00002 
00003     This file is part of the Arduino TLC5940 Library.
00004 
00005     The Arduino TLC5940 Library is free software: you can redistribute it
00006     and/or modify it under the terms of the GNU General Public License as
00007     published by the Free Software Foundation, either version 3 of the
00008     License, or (at your option) any later version.
00009 
00010     The Arduino TLC5940 Library is distributed in the hope that it will be
00011     useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013     GNU General Public License for more details.
00014 
00015     You should have received a copy of the GNU General Public License
00016     along with The Arduino TLC5940 Library.  If not, see
00017     <http://www.gnu.org/licenses/>. */
00018 
00019 #ifndef TLC_ANIMATIONS_H
00020 #define TLC_ANIMATIONS_H
00021 
00025 #include <avr/pgmspace.h>
00026 #include <avr/io.h>
00027 
00028 #include "tlc_config.h"
00029 #include "Tlc5940.h"
00030 #include "tlc_progmem_utils.h"
00031 
00033 prog_uint8_t *tlc_currentAnimation;
00035 volatile uint16_t tlc_animationFrames;
00037 volatile uint16_t tlc_animationPeriodsPerFrame;
00039 volatile uint16_t tlc_animationPeriodsWait;
00040 
00041 volatile void tlc_animationXLATCallback(void);
00042 void tlc_playAnimation(prog_uint8_t *animation, uint16_t frames, uint16_t periodsPerFrame);
00043 
00048 /* @{ */
00049 
00058 void tlc_playAnimation(prog_uint8_t *animation, uint16_t frames, uint16_t periodsPerFrame)
00059 {
00060     tlc_currentAnimation = animation;
00061     tlc_animationFrames = frames;
00062     tlc_animationPeriodsPerFrame = periodsPerFrame;
00063     tlc_animationPeriodsWait = 0;
00064     tlc_onUpdateFinished = tlc_animationXLATCallback;
00065     tlc_animationXLATCallback();
00066 }
00067 
00069 volatile void tlc_animationXLATCallback(void)
00070 {
00071     if (tlc_animationPeriodsWait) {
00072         tlc_animationPeriodsWait--;
00073         set_XLAT_interrupt();
00074     } else {
00075         if (tlc_animationFrames) {
00076             tlc_setGSfromProgmem(tlc_currentAnimation +
00077                                 (--tlc_animationFrames * NUM_TLCS * 24));
00078             tlc_animationPeriodsWait = tlc_animationPeriodsPerFrame;
00079             Tlc.update();
00080         } else { // animation is done
00081             tlc_onUpdateFinished = 0;
00082         }
00083     }
00084 }
00085 
00086 /* @} */
00087 
00088 #endif