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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2016 Amaury Pouly
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "nwz_lib.h"
int main(int argc, char **argv)
{
/* clear screen and display welcome message */
nwz_lcdmsg(true, 0, 0, "test_adc");
nwz_lcdmsg(false, 0, 2, "PWR OFF: quit");
/* open input device */
int input_fd = nwz_key_open();
if(input_fd < 0)
{
nwz_lcdmsg(false, 3, 7, "Cannot open input device");
sleep(2);
return 1;
}
/* open adc device */
int adc_fd = nwz_adc_open();
if(adc_fd < 0)
{
nwz_lcdmsg(false, 3, 4, "Cannot open adc device");
sleep(2);
return 1;
}
/* display input state in a loop */
while(1)
{
/* print channels */
for(int i = NWZ_ADC_MIN_CHAN; i <= NWZ_ADC_MAX_CHAN; i++)
nwz_lcdmsgf(false, 1, 4 + i, "%s: %d ", nwz_adc_get_name(i),
nwz_adc_get_val(adc_fd, i));
/* wait for event (10ms) */
int ret = nwz_key_wait_event(input_fd, 10000);
if(ret != 1)
continue;
struct input_event evt;
if(nwz_key_read_event(input_fd, &evt) != 1)
continue;
if(nwz_key_event_get_keycode(&evt) == NWZ_KEY_OPTION && !nwz_key_event_is_press(&evt))
break;
}
/* finish nicely */
return 0;
}
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