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/****************************************************************************
* config/vsn/src/power.c
* arch/arm/src/board/power.c
*
* Copyright (C) 2011 Uros Platise. All rights reserved.
*
* Authors: Uros Platise <uros.platise@isotel.eu>
*
* 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 NuttX 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 OWNER 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.
*
****************************************************************************/
/** \file
* \author Uros Platise
* \brief VSN Power
*/
#include <nuttx/config.h>
#include <arch/board/board.h>
#include <arch/stm32/irq.h>
#include <stdint.h>
#include <stdbool.h>
#include <debug.h>
#include "vsn.h"
/****************************************************************************
* Declarations and Structures
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
void board_power_register(void);
void board_power_adjust(void);
void board_power_status(void);
/****************************************************************************
* Public Functions
****************************************************************************/
void board_power_init(void)
{
stm32_configgpio(GPIO_PVS);
stm32_configgpio(GPIO_PST);
stm32_configgpio(GPIO_XPWR);
stm32_configgpio(GPIO_SCTC);
stm32_configgpio(GPIO_PCLR);
}
void board_power_reboot(void)
{
// low-level board reset (not just MCU reset)
// if external power is present, stimulate power-off as board
// will wake-up immediatelly, if power is not present, set an alarm
// before power off the board.
}
void board_power_off(void)
{
// Check if external supply is not present, otherwise return
// notifying that it is not possible to power-off the board
// \todo
// stop background processes
irqsave();
// switch to internal HSI and get the PD0 and PD1 as GPIO
sysclock_select_hsi();
// trigger shutdown with pull-up resistor (not push-pull!) and wait.
stm32_gpiowrite(GPIO_PCLR, true);
for (;;);
}
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