Contiki-NG
tps62730.c
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1/*
2 * Copyright (c) 2014, OpenMote Technologies, S.L.
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 * \addtogroup openmote-tps62730
35 * @{
36 *
37 * Driver for the TPS62730 voltage regulator, to enable power from
38 * the battery voltage (bypass, Vout=Vin, Iq < 1uA) or through the
39 * buck regulator (on, Vout=2.1V, Iq = 30uA)
40 * @{
41 *
42 * \file
43 * Driver for the TPS62730 voltage regulator
44 *
45 * \author
46 * Pere Tuset <peretuset@openmote.com>
47 */
48/*---------------------------------------------------------------------------*/
49#include "contiki.h"
50#include "dev/gpio.h"
51#include "dev/tps62730.h"
52/*---------------------------------------------------------------------------*/
53#define BSP_TPS62730_BASE (GPIO_B_BASE)
54#define BSP_TPS62730_ON (1 << 1)
55#define BSP_TPS62730_STATUS (1 << 0)
56/*---------------------------------------------------------------------------*/
57static void
58gpio_set(int port, int bit)
59{
60 REG((port | GPIO_DATA) + (bit << 2)) = bit;
61}
62/*---------------------------------------------------------------------------*/
63static void
64gpio_reset(int port, int bit)
65{
66 REG((port | GPIO_DATA) + (bit << 2)) = 0;
67}
68/*---------------------------------------------------------------------------*/
69void
70tps62730_init(void)
71{
72 GPIO_SET_OUTPUT(BSP_TPS62730_BASE, BSP_TPS62730_ON);
73 GPIO_SET_INPUT(BSP_TPS62730_BASE, BSP_TPS62730_STATUS);
74
75 tps62730_bypass();
76}
77/*---------------------------------------------------------------------------*/
78void
79tps62730_on(void)
80{
81 gpio_set(BSP_TPS62730_BASE, BSP_TPS62730_ON);
82}
83/*---------------------------------------------------------------------------*/
84void
85tps62730_bypass(void)
86{
87 gpio_reset(BSP_TPS62730_BASE, BSP_TPS62730_ON);
88}
89/*---------------------------------------------------------------------------*/
90/**
91 * @}
92 * @}
93 */
gpio.h
Header file with register and macro declarations for the cc2538 GPIO module.
GPIO_DATA
#define GPIO_DATA
Data register.
Definition: gpio.h:342
GPIO_SET_INPUT
#define GPIO_SET_INPUT(PORT_BASE, PIN_MASK)
Set pins with PIN_MASK of port with PORT_BASE to input.
Definition: gpio.h:78
GPIO_SET_OUTPUT
#define GPIO_SET_OUTPUT(PORT_BASE, PIN_MASK)
Set pins with PIN_MASK of port with PORT_BASE to output.
Definition: gpio.h:85
tps62730_init
void tps62730_init(void)
Initialize the TPS62730 voltage regulator in bypass mode.
Definition: tps62730.c:70
tps62730_on
void tps62730_on(void)
Set TPS62730 to on, Vout = 2.2V, Iq = 30 uA.
Definition: tps62730.c:79
tps62730_bypass
void tps62730_bypass(void)
Set TPS62730 to bypass, Vout = Vin, Iq < 1 uA.
Definition: tps62730.c:85
tps62730.h
Driver for the TPS62730 voltage regulator.