mirror of
https://github.com/RIOT-OS/RIOT.git
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81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
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/*
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* Copyright (C) 2021 Gerson Fernando Budke <nandojve@gmail.com>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_atxmega
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* @ingroup cpu_atxmega_periph
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* @{
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*
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* @file
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* @brief Low-level PM driver implementation
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*
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* @author Gerson Fernando Budke <nandojve@gmail.com>
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*
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* @}
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*/
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#include <avr/sleep.h>
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#include "periph_conf.h"
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#include "periph/pm.h"
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#define ENABLE_DEBUG 0
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#include "debug.h"
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void pm_reboot(void)
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{
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DEBUG("Reboot Software Reset\n" );
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/* XMEGA AU [MANUAL] p. 116 CTRL->Control register
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* page 13 3.12.1 Sequence for write operation to protected I/O registers
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* page 15 3.14.1 CCP – Configuration Change Protection register
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*/
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/* Disable CCP for Protected IO registerand set new value*/
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_PROTECTED_WRITE(RST_CTRL, RST_SWRST_bm);
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while (1) {}
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}
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/*
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* DEBUG may affect this routine.
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*
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* --- Do NOT add DEBUG macro here ---
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*
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*/
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void pm_set(unsigned mode)
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{
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unsigned irq_state = irq_disable();
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if (avr8_is_uart_tx_pending() && mode < 4) {
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irq_restore(irq_state);
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return;
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}
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switch (mode) {
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case 0:
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set_sleep_mode(SLEEP_SMODE_PDOWN_gc);
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break;
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case 1:
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set_sleep_mode(SLEEP_SMODE_PSAVE_gc);
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break;
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case 2:
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set_sleep_mode(SLEEP_SMODE_STDBY_gc);
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break;
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case 3:
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set_sleep_mode(SLEEP_SMODE_ESTDBY_gc);
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break;
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default:
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set_sleep_mode(SLEEP_SMODE_IDLE_gc);
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}
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sleep_enable();
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sei();
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sleep_cpu();
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sleep_disable();
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irq_restore(irq_state);
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}
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