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sys/ztimer: add periph_ptp backend

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This commit is contained in:
Jnae 2021-01-20 08:39:59 +01:00
parent 28e6544748
commit b1aaa974bd
4 changed files with 131 additions and 0 deletions
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54
sys/include/ztimer/periph_ptp.h Normal file
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@ -0,0 +1,54 @@
/*
* Copyright (C) 2018 Kaspar Schleiser <kaspar@schleiser.de>
2021 Otto-von-Guericke-Universität Magdeburg
*
* 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 directory for more
* details.
*/
/**
* @defgroup sys_ztimer_periph_ptp ztimer periph/ptp backend
* @ingroup sys_ztimer
* @brief ztimer periph/ptp backend
*
* This ztimer module implements a ztimer virtual clock on top of periph/ptp.
*
* @{
*
* @file
* @brief ztimer periph/ptp backend API
*
* @author Jana Eisoldt <jana.eisoldt@ovgu.de>
*/
#ifndef ZTIMER_PERIPH_PTP_H
#define ZTIMER_PERIPH_PTP_H
#include "ztimer.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief ztimer_periph_ptp structure definition
*
* The periph/ptp backend has no private fields, thus this is just a typedef
* to ztimer_clock_t.
*/
typedef ztimer_clock_t ztimer_periph_ptp_t;
/**
* @brief ztimer periph/ptp backend initialization function
*
* @param[in, out] clock ztimer_periph_ptp object to initialize
*/
void ztimer_periph_ptp_init(ztimer_periph_ptp_t *clock);
#ifdef __cplusplus
}
#endif
#endif /* ZTIMER_PERIPH_PTP_H */
/** @} */

5
sys/ztimer/Kconfig
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@ -28,6 +28,11 @@ config MODULE_ZTIMER_PERIPH_RTT
select MODULE_PERIPH_RTT
default y if !MODULE_ZTIMER_PERIPH_TIMER
config MODULE_ZTIMER_PERIPH_PTP
bool "PTP peripheral"
depends on HAS_PERIPH_PTP_TIMER
select MODULE_PERIPH_PTP_TIMER
config MODULE_ZTIMER_PERIPH_TIMER
bool "Timer peripheral"
depends on HAS_PERIPH_TIMER

4
sys/ztimer/Makefile.dep
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@ -70,6 +70,10 @@ ifneq (,$(filter ztimer_periph_rtt,$(USEMODULE)))
FEATURES_REQUIRED += periph_rtt
endif
ifneq (,$(filter ztimer_periph_ptp,$(USEMODULE)))
FEATURES_REQUIRED += periph_ptp_timer
endif
ifneq (,$(filter ztimer_convert_frac,$(USEMODULE)))
USEMODULE += frac
endif

68
sys/ztimer/periph_ptp.c Normal file
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@ -0,0 +1,68 @@
/*
* Copyright (C) 2018 Kaspar Schleiser <kaspar@schleiser.de>
2021 Otto-von-Guericke-Universität Magdeburg
*
* 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 directory for more
* details.
*/
/**
* @ingroup sys_ztimer_periph_ptp
* @{
*
* @file
* @brief ztimer periph/ptp implementation
*
* @author Jana Eisoldt <jana.eisoldt@ovgu.de>
*
* @}
*/
#include "assert.h"
#include "irq.h"
#include "periph/ptp.h"
#include "ztimer/periph_ptp.h"
#define ENABLE_DEBUG 0
#include "debug.h"
static ztimer_clock_t *clock_timer;
void ptp_timer_cb(void)
{
ztimer_handler(clock_timer);
}
static void _ztimer_periph_ptp_set(ztimer_clock_t *clock, uint32_t val)
{
(void)clock;
ptp_timer_set_u64(val);
}
static uint32_t _ztimer_periph_ptp_now(ztimer_clock_t *clock)
{
(void)clock;
return (uint32_t)ptp_clock_read_u64();
}
static void _ztimer_periph_ptp_cancel(ztimer_clock_t *clock)
{
(void)clock;
ptp_timer_clear();
}
static const ztimer_ops_t _ztimer_periph_ptp_ops = {
.set = _ztimer_periph_ptp_set,
.now = _ztimer_periph_ptp_now,
.cancel = _ztimer_periph_ptp_cancel,
};
void ztimer_periph_ptp_init(ztimer_periph_ptp_t *clock)
{
clock->ops = &_ztimer_periph_ptp_ops;
clock->max_value = UINT32_MAX;
clock_timer = clock;
ztimer_init_extend(clock);
}