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arduino-library-lolshield/lib/examples/LoLShield_FadeTest/LoLShield_FadeTest.pde
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2013-09-06 09:00:36 +00:00

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/*
LoL Shield grayscale / fading test
Writen for the LoL Shield, designed by Jimmie Rodgers:
http://jimmieprodgers.com/kits/lolshield/
Written by Thilo Fromm <kontakt@thilo-fromm.de>
largely based on the work of Matt Mets <Matt.Mets@gmail.com>.
This is free software; you can redistribute it and/or
modify it under the terms of the GNU Version 3 General Public
License as published by the Free Software Foundation;
or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "Charliplexing.h"
// Screen "refresh"
const unsigned int fps = 40;
const unsigned int fps_ms = 1000 / fps;
unsigned int frames = 0;
// number of frames to wait before advance animation
const unsigned int frames_per_step = 10;
void setup() // run once, when the sketch starts
{
LedSign::Init(DOUBLE_BUFFER | GRAYSCALE);
}
uint8_t i = 0;
void loop() // run over and over again
{
static unsigned long start = 0;
unsigned long end;
for (int row = 0; row < DISPLAY_ROWS; row++)
for (int col = 0; col < DISPLAY_COLS; col++)
LedSign::Set(col, row, (row+col + i)%SHADES);
LedSign::Flip(true);
if (0 == (frames++) % frames_per_step)
i++;
end = millis();
if (start) {
unsigned long diff = end - start;
if ( diff < fps_ms ) {
delay( fps_ms - diff );
} else {
// Signal that we're too slow...
LedSign::Clear(0);
LedSign::Flip();
delay(500);
LedSign::Clear(SHADES-1);
LedSign::Flip();
delay(500);
// re-set timeout
end = millis();
}
}
start = end;
}