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/*
* Copyright (c) 2012, 2013, Joel Bodenmann aka Tectu <joel@unormal.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the <organization> 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 <COPYRIGHT HOLDER> 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 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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