contiki/platform/openmote-cc2538/dev/tps62730.c

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/*
* Copyright (c) 2014, OpenMote Technologies, S.L.
* 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.
*
* This file is part of the Contiki operating system.
*
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup openmote-tps62730
* @{
*
* Driver for the TPS62730 voltage regulator, to enable power from
* the battery voltage (bypass, Vout=Vin, Iq < 1uA) or through the
* buck regulator (on, Vout=2.1V, Iq = 30uA)
* @{
*
* \file
* Driver for the TPS62730 voltage regulator
*
* \author
* Pere Tuset <peretuset@openmote.com>
*/
/*---------------------------------------------------------------------------*/
#include "contiki-conf.h"
#include "dev/gpio.h"
#include "dev/tps62730.h"
/*---------------------------------------------------------------------------*/
#define BSP_TPS62730_BASE (GPIO_B_BASE)
#define BSP_TPS62730_ON (1 << 1)
#define BSP_TPS62730_STATUS (1 << 0)
/*---------------------------------------------------------------------------*/
static void
gpio_set(int port, int bit)
{
REG((port | GPIO_DATA) + (bit << 2)) = bit;
}
/*---------------------------------------------------------------------------*/
static void
gpio_reset(int port, int bit)
{
REG((port | GPIO_DATA) + (bit << 2)) = 0;
}
/*---------------------------------------------------------------------------*/
void
tps62730_init(void)
{
GPIO_SET_OUTPUT(BSP_TPS62730_BASE, BSP_TPS62730_ON);
GPIO_SET_INPUT(BSP_TPS62730_BASE, BSP_TPS62730_STATUS);
tps62730_bypass();
}
/*---------------------------------------------------------------------------*/
void
tps62730_on(void)
{
gpio_set(BSP_TPS62730_BASE, BSP_TPS62730_ON);
}
/*---------------------------------------------------------------------------*/
void
tps62730_bypass(void)
{
gpio_reset(BSP_TPS62730_BASE, BSP_TPS62730_ON);
}
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/