199 lines
6.8 KiB
C
199 lines
6.8 KiB
C
/*
|
|
* Copyright (c) 2018, Texas Instruments Incorporated - http://www.ti.com/
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
* 3. Neither the name of the copyright holder nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* 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 HOLDER 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.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \addtogroup launchpad-button-sensor
|
|
* @{
|
|
*
|
|
* \file
|
|
* Driver for LaunchPad buttons
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
#include <contiki.h>
|
|
#include <sys/timer.h>
|
|
#include <lib/sensors.h>
|
|
/*---------------------------------------------------------------------------*/
|
|
#include <Board.h>
|
|
#include <ti/drivers/GPIO.h>
|
|
#include <ti/drivers/Power.h>
|
|
/*---------------------------------------------------------------------------*/
|
|
#include <stdint.h>
|
|
/*---------------------------------------------------------------------------*/
|
|
#include "button-sensor.h"
|
|
#include "button-sensor-arch.h"
|
|
/*---------------------------------------------------------------------------*/
|
|
/* Sensortag has 2 buttons: BTN1 and BTN2 */
|
|
/* Map the GPIO defines from the Board file */
|
|
#define BTN1_GPIO Board_KEY_LEFT
|
|
#define BTN2_GPIO Board_KEY_RIGHT
|
|
/*---------------------------------------------------------------------------*/
|
|
#ifdef BUTTON_SENSOR_CONF_ENABLE_SHUTDOWN
|
|
# define BUTTON_SENSOR_ENABLE_SHUTDOWN BUTTON_SENSOR_CONF_ENABLE_SHUTDOWN
|
|
#else
|
|
# define BUTTON_SENSOR_ENABLE_SHUTDOWN 1
|
|
#endif
|
|
/*---------------------------------------------------------------------------*/
|
|
#define DEBOUNCE_DURATION (CLOCK_SECOND >> 5)
|
|
/*---------------------------------------------------------------------------*/
|
|
typedef struct {
|
|
struct timer debounce;
|
|
clock_time_t start;
|
|
clock_time_t duration;
|
|
} BtnTimer;
|
|
/*---------------------------------------------------------------------------*/
|
|
static BtnTimer g_btn1Timer;
|
|
static BtnTimer g_btn2Timer;
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
button_press_cb(uint8_t index, BtnTimer *btnTimer, const struct sensors_sensor *btnSensor)
|
|
{
|
|
if (!timer_expired(&btnTimer->debounce)) {
|
|
return;
|
|
}
|
|
|
|
timer_set(&btnTimer->debounce, DEBOUNCE_DURATION);
|
|
|
|
// Start press duration counter on press (falling), notify on release (rising)
|
|
if (GPIO_read(index) == 0) {
|
|
btnTimer->start = clock_time();
|
|
btnTimer->duration = 0;
|
|
} else {
|
|
btnTimer->duration = clock_time() - btnTimer->start;
|
|
sensors_changed(btnSensor);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
button_value(int type, uint8_t index, BtnTimer *btnTimer)
|
|
{
|
|
if (type == BUTTON_SENSOR_VALUE_STATE) {
|
|
return (GPIO_read(index) == 0)
|
|
? BUTTON_SENSOR_VALUE_PRESSED
|
|
: BUTTON_SENSOR_VALUE_RELEASED;
|
|
} else if (type == BUTTON_SENSOR_VALUE_DURATION) {
|
|
return (int)btnTimer->duration;
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
button_config(int type, int value, uint8_t index, GPIO_CallbackFxn callback)
|
|
{
|
|
switch (type) {
|
|
case SENSORS_HW_INIT:
|
|
GPIO_clearInt(index);
|
|
GPIO_setCallback(index, callback);
|
|
break;
|
|
|
|
case SENSORS_ACTIVE:
|
|
if (value) {
|
|
GPIO_clearInt(index);
|
|
GPIO_enableInt(index);
|
|
} else {
|
|
GPIO_disableInt(index);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
button_status(int type, uint8_t index)
|
|
{
|
|
switch(type) {
|
|
case SENSORS_ACTIVE: /* fallthrough */
|
|
case SENSORS_READY: {
|
|
GPIO_PinConfig pinCfg = 0;
|
|
GPIO_getConfig(index, &pinCfg);
|
|
return (pinCfg & GPIO_CFG_IN_INT_NONE) == 0;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
btn1_press_cb(unsigned char unusued)
|
|
{
|
|
button_press_cb(BTN1_GPIO, &g_btn1Timer, &btn1_sensor);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
btn1_value(int type)
|
|
{
|
|
return button_value(type, BTN1_GPIO, &g_btn1Timer);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
btn1_config(int type, int value)
|
|
{
|
|
return button_config(type, value, BTN1_GPIO, btn1_press_cb);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
btn1_status(int type)
|
|
{
|
|
return button_status(type, BTN1_GPIO);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
btn2_press_cb(unsigned char unusued)
|
|
{
|
|
if (BUTTON_SENSOR_ENABLE_SHUTDOWN) {
|
|
Power_shutdown(Power_ENTERING_SHUTDOWN, 0);
|
|
return;
|
|
}
|
|
|
|
button_press_cb(BTN2_GPIO, &g_btn2Timer, &btn2_sensor);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
btn2_value(int type)
|
|
{
|
|
return button_value(type, BTN2_GPIO, &g_btn2Timer);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
btn2_config(int type, int value)
|
|
{
|
|
return button_config(type, value, BTN2_GPIO, btn2_press_cb);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
btn2_status(int type)
|
|
{
|
|
return button_status(type, BTN1_GPIO);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
SENSORS_SENSOR(btn1_sensor, BUTTON_SENSOR, btn1_value, btn1_config, btn1_status);
|
|
SENSORS_SENSOR(btn2_sensor, BUTTON_SENSOR, btn2_value, btn2_config, btn2_status);
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @} */
|