mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-09-10 14:54:46 +00:00
125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2016, Zolertia - http://www.zolertia.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 Institute 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 INSTITUTE 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 INSTITUTE 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 zoul-relay
|
|
* @{
|
|
*
|
|
* \file
|
|
* Driver for a relay actuator
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
#include "contiki.h"
|
|
#include "relay.h"
|
|
#include "dev/gpio.h"
|
|
#include "lib/sensors.h"
|
|
#include "dev/ioc.h"
|
|
/*---------------------------------------------------------------------------*/
|
|
#define RELAY_PORT_BASE GPIO_PORT_TO_BASE(RELAY_PORT)
|
|
#define RELAY_PIN_MASK GPIO_PIN_MASK(RELAY_PIN)
|
|
/*---------------------------------------------------------------------------*/
|
|
static uint8_t enabled;
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
relay_on(void)
|
|
{
|
|
if(enabled) {
|
|
GPIO_SET_PIN(RELAY_PORT_BASE, RELAY_PIN_MASK);
|
|
return RELAY_SUCCESS;
|
|
}
|
|
return RELAY_ERROR;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
relay_off(void)
|
|
{
|
|
if(enabled) {
|
|
GPIO_CLR_PIN(RELAY_PORT_BASE, RELAY_PIN_MASK);
|
|
return RELAY_SUCCESS;
|
|
}
|
|
return RELAY_ERROR;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
status(int type)
|
|
{
|
|
switch(type) {
|
|
case SENSORS_ACTIVE:
|
|
return GPIO_READ_PIN(RELAY_PORT_BASE, RELAY_PIN_MASK);
|
|
case SENSORS_READY:
|
|
return enabled;
|
|
}
|
|
return RELAY_ERROR;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
value(int type)
|
|
{
|
|
switch(type) {
|
|
case RELAY_OFF:
|
|
return relay_on();
|
|
case RELAY_ON:
|
|
return relay_off();
|
|
case RELAY_TOGGLE:
|
|
if(status(SENSORS_ACTIVE)) {
|
|
return relay_off();
|
|
} else {
|
|
return relay_on();
|
|
}
|
|
default:
|
|
return RELAY_ERROR;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
configure(int type, int value)
|
|
{
|
|
if(type != SENSORS_ACTIVE) {
|
|
return RELAY_ERROR;
|
|
}
|
|
|
|
if(value) {
|
|
GPIO_SOFTWARE_CONTROL(RELAY_PORT_BASE, RELAY_PIN_MASK);
|
|
GPIO_SET_OUTPUT(RELAY_PORT_BASE, RELAY_PIN_MASK);
|
|
ioc_set_over(RELAY_PORT, RELAY_PIN, IOC_OVERRIDE_OE);
|
|
GPIO_CLR_PIN(RELAY_PORT_BASE, RELAY_PIN_MASK);
|
|
enabled = 1;
|
|
return RELAY_SUCCESS;
|
|
}
|
|
|
|
GPIO_SET_INPUT(RELAY_PORT_BASE, RELAY_PIN_MASK);
|
|
enabled = 0;
|
|
return RELAY_SUCCESS;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
SENSORS_SENSOR(relay, RELAY_ACTUATOR, value, configure, status);
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @} */
|