kaspar/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-12-23 13:33:49 +01:00
Code Releases Activity

cpu/sam0/rtc_rtt: integrate pm_layered

Browse Source
This commit is contained in:
Jue 2022-10-29 14:10:08 +02:00
parent cc4e880aa8
commit db9263eeca
1 changed files with 63 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
cpu/sam0_common/periph/rtc_rtt.c
View File

@ -1,6 +1,7 @@
/*
* Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
* 2015 FreshTemp, LLC.
* 2022 SSV Software Systems GmbH
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
@ -20,12 +21,14 @@
* @author Baptiste Clenet <bapclenet@gmail.com>
* @author FWX <FWX@dialine.fr>
* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
* @author Juergen Fitschen <me@jue.yt>
*
* @}
*/
#include <stdint.h>
#include <string.h>
#include "pm_layered.h"
#include "periph/rtc.h"
#include "periph/rtt.h"
#include "periph_conf.h"
@ -62,6 +65,38 @@ typedef struct {
static rtc_state_t alarm_cb;
static rtc_state_t overflow_cb;
#if (IS_ACTIVE(MODULE_PERIPH_RTC) || IS_ACTIVE(MODULE_PERIPH_RTT)) && \
IS_ACTIVE(MODULE_PM_LAYERED) && defined(SAM0_RTCRTT_PM_BLOCK)
static bool _pm_alarm = false;
#if IS_ACTIVE(MODULE_PERIPH_RTT)
static bool _pm_overflow = false;
#endif
static inline void _pm_block(bool *flag)
{
if (!*flag) {
pm_block(SAM0_RTCRTT_PM_BLOCK);
*flag = true;
}
}
static inline void _pm_unblock(bool *flag)
{
if (*flag) {
pm_unblock(SAM0_RTCRTT_PM_BLOCK);
*flag = false;
}
}
#else
/* Use empty stubs if pm is disabled */
#define _pm_block(x)
#define _pm_unblock(x)
#endif
#if IS_ACTIVE(MODULE_PERIPH_RTC)
/* At 1Hz, RTC goes till 63 years (2^5, see 17.8.22 in datasheet)
* struct tm younts the year since 1900, use the difference to RIOT_EPOCH
@ -311,6 +346,9 @@ static void _rtc_init(void)
void rtc_init(void)
{
/* clear previously set pm mode blockers */
_pm_unblock(&_pm_alarm);
_poweroff();
_rtc_clock_setup();
_poweron();
@ -332,6 +370,9 @@ void rtc_init(void)
#ifdef MODULE_PERIPH_RTT
void rtt_init(void)
{
/* clear previously set pm mode blockers */
_pm_unblock(&_pm_alarm);
_pm_unblock(&_pm_overflow);
_rtt_clock_setup();
_poweron();
@ -579,6 +620,11 @@ int rtc_set_alarm(struct tm *time, rtc_alarm_cb_t cb, void *arg)
RTC->MODE2.INTFLAG.reg = RTC_MODE2_INTFLAG_ALARM0;
RTC->MODE2.INTENSET.reg = RTC_MODE2_INTENSET_ALARM0;
/* block power mode if callback function is present */
if (alarm_cb.cb) {
_pm_block(&_pm_alarm);
}
return 0;
}
@ -608,6 +654,8 @@ void rtc_clear_alarm(void)
{
/* disable alarm interrupt */
RTC->MODE2.INTENCLR.reg = RTC_MODE2_INTENCLR_ALARM0;
_pm_unblock(&_pm_alarm);
}
void rtc_poweron(void)
@ -633,11 +681,18 @@ void rtt_set_overflow_cb(rtt_cb_t cb, void *arg)
/* enable overflow interrupt */
RTC->MODE0.INTENSET.reg = RTC_MODE0_INTENSET_OVF;
/* block power mode if callback function is present */
if (overflow_cb.cb) {
_pm_block(&_pm_overflow);
}
}
void rtt_clear_overflow_cb(void)
{
/* disable overflow interrupt */
RTC->MODE0.INTENCLR.reg = RTC_MODE0_INTENCLR_OVF;
_pm_unblock(&_pm_overflow);
}
uint32_t rtt_get_counter(void)
@ -674,12 +729,19 @@ void rtt_set_alarm(uint32_t alarm, rtt_cb_t cb, void *arg)
/* enable compare interrupt and clear flag */
RTC->MODE0.INTFLAG.reg = RTC_MODE0_INTFLAG_CMP0;
RTC->MODE0.INTENSET.reg = RTC_MODE0_INTENSET_CMP0;
/* block power mode if callback function is present */
if (alarm_cb.cb) {
_pm_block(&_pm_alarm);
}
}
void rtt_clear_alarm(void)
{
/* disable compare interrupt */
RTC->MODE0.INTENCLR.reg = RTC_MODE0_INTENCLR_CMP0;
_pm_unblock(&_pm_alarm);
}
void rtt_poweron(void)
@ -727,6 +789,7 @@ static void _isr_rtt(void)
/* disable interrupt */
RTC->MODE0.INTENCLR.reg = RTC_MODE0_INTENCLR_CMP0;
if (alarm_cb.cb) {
_pm_unblock(&_pm_alarm);
alarm_cb.cb(alarm_cb.arg);
}
}