Contiki-NG
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relay-phidget.c
1/*
2 * Copyright (c) 2010, Swedish Institute of Computer Science.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the Institute nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * This file is part of the Contiki operating system.
30 *
31 *
32 * -----------------------------------------------------------------
33 *
34 * \file
35 * Device simple driver for generic relay in phidget port of Zolertia Z1
36 * \author
37 * Antonio Lignan, Zolertia <alinan@zolertia.com>
38 *
39 */
40
41#include "contiki.h"
42#include "relay-phidget.h"
43
44static uint8_t controlPin;
45
46enum PHIDGET_RELAY_STATUSTYPES {
47 /* must be a bit and not more, not using 0x00. */
48 INITED = 0x01,
49 RUNNING = 0x02,
50 STOPPED = 0x04,
51};
52
53static enum PHIDGET_RELAY_STATUSTYPES _RELAY_STATUS = 0x00;
54
55/*---------------------------------------------------------------------------*/
56
57void
58relay_enable(uint8_t pin)
59{
60
61 if(!(_RELAY_STATUS & INITED)) {
62
63 _RELAY_STATUS |= INITED;
64
65 /* Selects the pin to be configure as the control pin of the relay module */
66 controlPin = (1 << pin);
67
68 /* Configures the control pin */
69 P6SEL &= ~controlPin;
70 P6DIR |= controlPin;
71 }
72}
73/*---------------------------------------------------------------------------*/
74
75void
76relay_on()
77{
78 if((_RELAY_STATUS & INITED)) {
79 P6OUT |= controlPin;
80 }
81}
82/*---------------------------------------------------------------------------*/
83void
84relay_off()
85{
86 if((_RELAY_STATUS & INITED)) {
87 P6OUT &= ~controlPin;
88 }
89}
90/*---------------------------------------------------------------------------*/
91
92int8_t
93relay_toggle()
94{
95 if((_RELAY_STATUS & INITED)) {
96 P6OUT ^= controlPin;
97 if((P6OUT & controlPin)) {
98 return 1;
99 }
100 return 0;
101 }
102 return -1;
103}
104/*---------------------------------------------------------------------------*/
105