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69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
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/**
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* \file
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*
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* \brief SAM Power manager
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*
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* Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Subject to your compliance with these terms, you may use Microchip
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* software and any derivatives exclusively with Microchip products.
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* It is your responsibility to comply with third party license terms applicable
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* to your use of third party software (including open source software) that
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* may accompany Microchip software.
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*
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* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
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* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
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* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
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* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
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* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
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* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
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* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
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* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
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* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
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* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
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* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
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*
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* \asf_license_stop
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*
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*/
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#include <hpl_sleep.h>
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#include <hpl_init.h>
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/**
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* \brief Set the sleep mode for the device
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*/
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int32_t _set_sleep_mode(const uint8_t mode)
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{
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uint8_t delay = 10;
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switch (mode) {
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case 2:
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case 4:
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case 5:
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case 6:
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case 7:
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hri_pm_write_SLEEPCFG_reg(PM, mode);
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/* A small latency happens between the store instruction and actual
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* writing of the SLEEPCFG register due to bridges. Software has to make
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* sure the SLEEPCFG register reads the wanted value before issuing WFI
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* instruction.
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*/
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do {
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if (hri_pm_read_SLEEPCFG_reg(PM) == mode) {
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break;
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}
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} while (--delay);
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break;
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default:
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return ERR_INVALID_ARG;
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}
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return ERR_NONE;
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}
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