109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT 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/RT 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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#include "ch.h"
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#include "hal.h"
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static void led4off(void *arg) {
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(void)arg;
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palClearPad(GPIOB, GPIOB_LED4);
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}
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/* Triggered when the button is pressed or released. The LED4 is set to ON.*/
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static void extcb1(EXTDriver *extp, expchannel_t channel) {
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static VirtualTimer vt4;
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(void)extp;
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(void)channel;
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palSetPad(GPIOB, GPIOB_LED4);
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chSysLockFromIsr();
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if (chVTIsArmedI(&vt4))
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chVTResetI(&vt4);
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/* LED4 set to OFF after 200mS.*/
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chVTSetI(&vt4, MS2ST(200), led4off, NULL);
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chSysUnlockFromIsr();
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}
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static const EXTConfig extcfg = {
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{
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{EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART, extcb1},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL},
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{EXT_CH_MODE_DISABLED, NULL}
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},
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EXT_MODE_EXTI(EXT_MODE_GPIOA, /* Button.*/
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0)
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};
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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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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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/*
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* Activates the EXT driver 1.
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*/
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extStart(&EXTD1, &extcfg);
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/*
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* Normal main() thread activity, in this demo it enables and disables the
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* button EXT channel using 5 seconds intervals.
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*/
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while (TRUE) {
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EXTI->SWIER = 64;
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chThdSleepMilliseconds(5000);
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extChannelDisable(&EXTD1, 0);
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EXTI->SWIER = 64;
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chThdSleepMilliseconds(5000);
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extChannelEnable(&EXTD1, 0);
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}
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}
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