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/**
* \file
*
* \brief Sleep related functionality implementation.
*
* Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.
*
* \asf_license_start
*
* \page License
*
* Subject to your compliance with these terms, you may use Microchip
* software and any derivatives exclusively with Microchip products.
* It is your responsibility to comply with third party license terms applicable
* to your use of third party software (including open source software) that
* may accompany Microchip software.
*
* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
*
* \asf_license_stop
*
*/
#include "hal_sleep.h"
#include <hpl_sleep.h>
/**
* \brief Driver version
*/
#define DRIVER_VERSION 0x00000001u
/**
* \brief Set the sleep mode of the device and put the MCU to sleep
*
* For an overview of which systems are disabled in sleep for the different
* sleep modes, see the data sheet.
*
* \param[in] mode Sleep mode to use
*
* \return The status of a sleep request
* \retval -1 The requested sleep mode was invalid or not available
* \retval 0 The operation completed successfully, returned after leaving the
* sleep
*/
int sleep(const uint8_t mode)
{
if (ERR_NONE != _set_sleep_mode(mode))
return ERR_INVALID_ARG;
// wait for the mode set to actually take, per note in Microchip data
// sheet DS60001465, section 19.8.2:
//
// A small latency happens between the store instruction and actual
// writing of the SLEEPCFG register due to bridges. Software has to make
// sure the SLEEPCFG register reads the wanted value before issuing WFI
// instruction.
while(_get_sleep_mode() != mode);
_go_to_sleep();
return ERR_NONE;
}
/**
* \brief Retrieve the current driver version
*
* \return Current driver version
*/
uint32_t sleep_get_version(void)
{
return DRIVER_VERSION;
}
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