253 lines
8.4 KiB
C
253 lines
8.4 KiB
C
/*
|
|
* Copyright (c) 2012, 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 cc2538dk-button-sensor
|
|
* @{
|
|
*
|
|
* \file
|
|
* Driver for the SmartRF06EB buttons
|
|
*/
|
|
#include "contiki.h"
|
|
#include "dev/nvic.h"
|
|
#include "dev/ioc.h"
|
|
#include "dev/gpio.h"
|
|
#include "dev/button-sensor.h"
|
|
#include "sys/timer.h"
|
|
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
|
|
#define BUTTON_SELECT_PORT_BASE GPIO_PORT_TO_BASE(BUTTON_SELECT_PORT)
|
|
#define BUTTON_SELECT_PIN_MASK GPIO_PIN_MASK(BUTTON_SELECT_PIN)
|
|
|
|
#define BUTTON_LEFT_PORT_BASE GPIO_PORT_TO_BASE(BUTTON_LEFT_PORT)
|
|
#define BUTTON_LEFT_PIN_MASK GPIO_PIN_MASK(BUTTON_LEFT_PIN)
|
|
|
|
#define BUTTON_RIGHT_PORT_BASE GPIO_PORT_TO_BASE(BUTTON_RIGHT_PORT)
|
|
#define BUTTON_RIGHT_PIN_MASK GPIO_PIN_MASK(BUTTON_RIGHT_PIN)
|
|
|
|
#define BUTTON_UP_PORT_BASE GPIO_PORT_TO_BASE(BUTTON_UP_PORT)
|
|
#define BUTTON_UP_PIN_MASK GPIO_PIN_MASK(BUTTON_UP_PIN)
|
|
|
|
#define BUTTON_DOWN_PORT_BASE GPIO_PORT_TO_BASE(BUTTON_DOWN_PORT)
|
|
#define BUTTON_DOWN_PIN_MASK GPIO_PIN_MASK(BUTTON_DOWN_PIN)
|
|
/*---------------------------------------------------------------------------*/
|
|
static struct timer debouncetimer;
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Common initialiser for all buttons
|
|
* \param port_base GPIO port's register offset
|
|
* \param pin_mask Pin mask corresponding to the button's pin
|
|
*/
|
|
static void
|
|
config(uint32_t port_base, uint32_t pin_mask)
|
|
{
|
|
/* Software controlled */
|
|
GPIO_SOFTWARE_CONTROL(port_base, pin_mask);
|
|
|
|
/* Set pin to input */
|
|
GPIO_SET_INPUT(port_base, pin_mask);
|
|
|
|
/* Enable edge detection */
|
|
GPIO_DETECT_EDGE(port_base, pin_mask);
|
|
|
|
/* Single edge */
|
|
GPIO_TRIGGER_SINGLE_EDGE(port_base, pin_mask);
|
|
|
|
/* Trigger interrupt on Falling edge */
|
|
GPIO_DETECT_RISING(port_base, pin_mask);
|
|
|
|
GPIO_ENABLE_INTERRUPT(port_base, pin_mask);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Callback registered with the GPIO module. Gets fired with a button
|
|
* port/pin generates an interrupt
|
|
* \param port The port number that generated the interrupt
|
|
* \param pin The pin number that generated the interrupt. This is the pin
|
|
* absolute number (i.e. 0, 1, ..., 7), not a mask
|
|
*/
|
|
static void
|
|
btn_callback(uint8_t port, uint8_t pin)
|
|
{
|
|
if(!timer_expired(&debouncetimer)) {
|
|
return;
|
|
}
|
|
|
|
timer_set(&debouncetimer, CLOCK_SECOND / 8);
|
|
|
|
if((port == BUTTON_SELECT_PORT) && (pin == BUTTON_SELECT_PIN)) {
|
|
sensors_changed(&button_select_sensor);
|
|
} else if((port == BUTTON_LEFT_PORT) && (pin == BUTTON_LEFT_PIN)) {
|
|
sensors_changed(&button_left_sensor);
|
|
} else if((port == BUTTON_RIGHT_PORT) && (pin == BUTTON_RIGHT_PIN)) {
|
|
sensors_changed(&button_right_sensor);
|
|
} else if((port == BUTTON_UP_PORT) && (pin == BUTTON_UP_PIN)) {
|
|
sensors_changed(&button_up_sensor);
|
|
} else if((port == BUTTON_DOWN_PORT) && (pin == BUTTON_DOWN_PIN)) {
|
|
sensors_changed(&button_down_sensor);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Init function for the select button.
|
|
*
|
|
* Parameters are ignored. They have been included because the prototype is
|
|
* dictated by the core sensor api. The return value is also not required by
|
|
* the API but otherwise ignored.
|
|
*
|
|
* \param type ignored
|
|
* \param value ignored
|
|
* \return ignored
|
|
*/
|
|
static int
|
|
config_select(int type, int value)
|
|
{
|
|
config(BUTTON_SELECT_PORT_BASE, BUTTON_SELECT_PIN_MASK);
|
|
|
|
ioc_set_over(BUTTON_SELECT_PORT, BUTTON_SELECT_PIN, IOC_OVERRIDE_PUE);
|
|
|
|
nvic_interrupt_enable(BUTTON_SELECT_VECTOR);
|
|
|
|
gpio_register_callback(btn_callback, BUTTON_SELECT_PORT, BUTTON_SELECT_PIN);
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Init function for the left button.
|
|
*
|
|
* Parameters are ignored. They have been included because the prototype is
|
|
* dictated by the core sensor api. The return value is also not required by
|
|
* the API but otherwise ignored.
|
|
*
|
|
* \param type ignored
|
|
* \param value ignored
|
|
* \return ignored
|
|
*/
|
|
static int
|
|
config_left(int type, int value)
|
|
{
|
|
config(BUTTON_LEFT_PORT_BASE, BUTTON_LEFT_PIN_MASK);
|
|
|
|
ioc_set_over(BUTTON_LEFT_PORT, BUTTON_LEFT_PIN, IOC_OVERRIDE_PUE);
|
|
|
|
nvic_interrupt_enable(BUTTON_LEFT_VECTOR);
|
|
|
|
gpio_register_callback(btn_callback, BUTTON_LEFT_PORT, BUTTON_LEFT_PIN);
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Init function for the right button.
|
|
*
|
|
* Parameters are ignored. They have been included because the prototype is
|
|
* dictated by the core sensor api. The return value is also not required by
|
|
* the API but otherwise ignored.
|
|
*
|
|
* \param type ignored
|
|
* \param value ignored
|
|
* \return ignored
|
|
*/
|
|
static int
|
|
config_right(int type, int value)
|
|
{
|
|
config(BUTTON_RIGHT_PORT_BASE, BUTTON_RIGHT_PIN_MASK);
|
|
|
|
ioc_set_over(BUTTON_RIGHT_PORT, BUTTON_RIGHT_PIN, IOC_OVERRIDE_PUE);
|
|
|
|
nvic_interrupt_enable(BUTTON_RIGHT_VECTOR);
|
|
|
|
gpio_register_callback(btn_callback, BUTTON_RIGHT_PORT, BUTTON_RIGHT_PIN);
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Init function for the up button.
|
|
*
|
|
* Parameters are ignored. They have been included because the prototype is
|
|
* dictated by the core sensor api. The return value is also not required by
|
|
* the API but otherwise ignored.
|
|
*
|
|
* \param type ignored
|
|
* \param value ignored
|
|
* \return ignored
|
|
*/
|
|
static int
|
|
config_up(int type, int value)
|
|
{
|
|
config(BUTTON_UP_PORT_BASE, BUTTON_UP_PIN_MASK);
|
|
|
|
ioc_set_over(BUTTON_UP_PORT, BUTTON_UP_PIN, IOC_OVERRIDE_PUE);
|
|
|
|
nvic_interrupt_enable(BUTTON_UP_VECTOR);
|
|
|
|
gpio_register_callback(btn_callback, BUTTON_UP_PORT, BUTTON_UP_PIN);
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Init function for the down button.
|
|
*
|
|
* Parameters are ignored. They have been included because the prototype is
|
|
* dictated by the core sensor api. The return value is also not required by
|
|
* the API but otherwise ignored.
|
|
*
|
|
* \param type ignored
|
|
* \param value ignored
|
|
* \return ignored
|
|
*/
|
|
static int
|
|
config_down(int type, int value)
|
|
{
|
|
config(BUTTON_DOWN_PORT_BASE, BUTTON_DOWN_PIN_MASK);
|
|
|
|
ioc_set_over(BUTTON_DOWN_PORT, BUTTON_DOWN_PIN, IOC_OVERRIDE_PUE);
|
|
|
|
nvic_interrupt_enable(BUTTON_DOWN_VECTOR);
|
|
|
|
gpio_register_callback(btn_callback, BUTTON_DOWN_PORT, BUTTON_DOWN_PIN);
|
|
return 1;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
button_sensor_init()
|
|
{
|
|
timer_set(&debouncetimer, 0);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
SENSORS_SENSOR(button_select_sensor, BUTTON_SENSOR, NULL, config_select, NULL);
|
|
SENSORS_SENSOR(button_left_sensor, BUTTON_SENSOR, NULL, config_left, NULL);
|
|
SENSORS_SENSOR(button_right_sensor, BUTTON_SENSOR, NULL, config_right, NULL);
|
|
SENSORS_SENSOR(button_up_sensor, BUTTON_SENSOR, NULL, config_up, NULL);
|
|
SENSORS_SENSOR(button_down_sensor, BUTTON_SENSOR, NULL, config_down, NULL);
|
|
|
|
/** @} */
|