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/*
ChibiOS/GFX - Copyright (C) 2012, 2013
Joel Bodenmann aka Tectu <joel@unormal.org>
This file is part of ChibiOS/GFX.
ChibiOS/GFX is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/GFX 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* This demo demonstrates the use of the GAUDIN module to read audio channel 0.
* The audio channel gets read to display a very simple oscilloscope.
*
* It also demonstrates how to write your own custom GWIN window type.
*/
#include "ch.h"
#include "hal.h"
#include "gfx.h"
/* Include our custom gwin audio oscilloscope */
#include "gwinosc.h"
/* Specify our timing parameters */
#define MY_AUDIO_FREQUENCY 4000 /* 4khz */
#define MY_AUDIO_CHANNEL 0 /* Use channel 0 */
/* Data */
static GScopeObject gScopeWindow;
/*
* Application entry point.
*/
int main(void) {
GHandle ghScope;
coord_t swidth, sheight;
halInit();
chSysInit();
gdispInit();
gdispClear(Black);
/* Get the screen dimensions */
swidth = gdispGetWidth();
sheight = gdispGetHeight();
/* Set up the scope window to fill the screen */
ghScope = gwinCreateScope(&gScopeWindow, 0, 0, swidth, sheight, MY_AUDIO_CHANNEL, MY_AUDIO_FREQUENCY);
gwinSetBgColor(ghScope, White);
gwinSetColor(ghScope, Red);
gwinClear(ghScope);
/* Just keep displaying the scope traces */
while (TRUE) {
gwinWaitForScopeTrace(ghScope);
}
}
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