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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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/RT 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/>.
*/
#include "ch.h"
#include "hal.h"
static VirtualTimer vt;
/* LED set to OFF after 200mS.*/
static void ledoff(void *arg) {
(void)arg;
palSetPad(GPIOC, GPIOC_LED);
}
/* Triggered when the button is pressed or released. The LED is set to ON.*/
static void extcb1(EXTDriver *extp, expchannel_t channel) {
(void)extp;
(void)channel;
palClearPad(GPIOC, GPIOC_LED);
chSysLockFromIsr();
if (!chVTIsArmedI(&vt))
chVTSetI(&vt, MS2ST(200), ledoff, NULL);
chSysUnlockFromIsr();
}
/* Triggered when the LED goes OFF.*/
static void extcb2(EXTDriver *extp, expchannel_t channel) {
(void)extp;
(void)channel;
}
static const EXTConfig extcfg = {
{
{EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART, extcb1},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_RISING_EDGE | EXT_CH_MODE_AUTOSTART, extcb2},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
{EXT_CH_MODE_DISABLED, NULL},
},
EXT_MODE_EXTI(EXT_MODE_GPIOA,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
EXT_MODE_GPIOC,
0,
0,
0)
};
/*
* Application entry point.
*/
int main(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/*
* Activates the EXT driver 1.
*/
extStart(&EXTD1, &extcfg);
/*
* Normal main() thread activity, in this demo it enables and disables the
* button EXT channel using 5 seconds intervals.
*/
while (TRUE) {
chThdSleepMilliseconds(5000);
extChannelDisable(&EXTD1, 0);
chThdSleepMilliseconds(5000);
extChannelEnable(&EXTD1, 0);
}
}
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