68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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ChibiOS/GFX - Copyright (C) 2012, 2013
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Joel Bodenmann aka Tectu <joel@unormal.org>
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This file is part of ChibiOS/GFX.
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ChibiOS/GFX is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/GFX is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* This demo demonstrates the use of the GAUDIN module to read audio channel 0.
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* The audio channel gets read to display a very simple oscilloscope.
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*
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* It also demonstrates how to write your own custom GWIN window type.
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*/
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#include "ch.h"
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#include "hal.h"
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#include "gfx.h"
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/* Include our custom gwin audio oscilloscope */
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#include "gwinosc.h"
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/* Specify our timing parameters */
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#define MY_AUDIO_FREQUENCY 4000 /* 4khz */
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#define MY_AUDIO_CHANNEL 0 /* Use channel 0 */
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/* Data */
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static GScopeObject gScopeWindow;
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/*
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* Application entry point.
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*/
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int main(void) {
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GHandle ghScope;
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coord_t swidth, sheight;
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halInit();
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chSysInit();
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gdispInit();
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gdispClear(Black);
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/* Get the screen dimensions */
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swidth = gdispGetWidth();
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sheight = gdispGetHeight();
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/* Set up the scope window to fill the screen */
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ghScope = gwinCreateScope(&gScopeWindow, 0, 0, swidth, sheight, MY_AUDIO_CHANNEL, MY_AUDIO_FREQUENCY);
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gwinSetBgColor(ghScope, White);
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gwinSetColor(ghScope, Red);
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gwinClear(ghScope);
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/* Just keep displaying the scope traces */
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while (TRUE) {
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gwinWaitForScopeTrace(ghScope);
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}
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}
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