mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-21 03:30:01 +00:00
105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/**
|
|
* Copyright (c) 2014, Analog Devices, Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted (subject to the limitations in the
|
|
* disclaimer below) 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 Analog Devices, Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
|
|
* GRANTED BY THIS LICENSE. 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
|
|
*/
|
|
/**
|
|
* \author Jim Paris <jim.paris@rigado.com>
|
|
*/
|
|
|
|
#include "lib/sensors.h"
|
|
#include "dev/button-sensor.h"
|
|
#include "platform-conf.h"
|
|
|
|
#include <signal.h>
|
|
|
|
const struct sensors_sensor button_sensor;
|
|
static struct timer debouncetimer;
|
|
|
|
/* e.g. pADI_GP0 */
|
|
#define GPIO CC_CONCAT(pADI_GP, BUTTON_GPIO)
|
|
|
|
/* e.g. Ext_Int2_Handler */
|
|
#define HANDLER CC_CONCAT(CC_CONCAT(Ext_Int, BUTTON_INT), _Handler)
|
|
|
|
/* e.g. EINT2_IRQn */
|
|
#define IRQN CC_CONCAT(CC_CONCAT(EINT, BUTTON_INT), _IRQn)
|
|
|
|
void
|
|
HANDLER(void)
|
|
{
|
|
pADI_INTERRUPT->EICLR = (1 << BUTTON_INT);
|
|
if(!timer_expired(&debouncetimer)) {
|
|
return;
|
|
}
|
|
timer_set(&debouncetimer, CLOCK_SECOND / 8);
|
|
sensors_changed(&button_sensor);
|
|
}
|
|
static int
|
|
config(int type, int c)
|
|
{
|
|
switch(type) {
|
|
case SENSORS_HW_INIT:
|
|
timer_set(&debouncetimer, 0);
|
|
return 1;
|
|
case SENSORS_ACTIVE:
|
|
/* Set button as a GPIO input with pullup */
|
|
GPIO->GPCON &= ~(3UL << (BUTTON_PIN * 2));
|
|
GPIO->GPOEN &= ~(1UL << BUTTON_PIN);
|
|
GPIO->GPPUL |= (1UL << BUTTON_PIN);
|
|
|
|
/* Enable interrupt for the button (rise and fall) */
|
|
#if BUTTON_INT <= 3
|
|
pADI_INTERRUPT->EI0CFG |= (0xaUL << (4 * (BUTTON_INT - 0)));
|
|
#elif BUTTON_INT <= 7
|
|
pADI_INTERRUPT->EI1CFG |= (0xaUL << (4 * (BUTTON_INT - 4)));
|
|
#endif
|
|
pADI_INTERRUPT->EICLR = (1 << BUTTON_INT);
|
|
NVIC_EnableIRQ(IRQN);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
static int
|
|
status(int type)
|
|
{
|
|
switch(type) {
|
|
case SENSORS_ACTIVE:
|
|
case SENSORS_READY:
|
|
if(GPIO->GPIN & (1UL << BUTTON_PIN)) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
SENSORS_SENSOR(button_sensor, BUTTON_SENSOR, NULL, config, status);
|