diff options
Diffstat (limited to 'atmel-samd/asf4/samd51/hal/src/hal_timer.c')
| -rw-r--r-- | atmel-samd/asf4/samd51/hal/src/hal_timer.c | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/atmel-samd/asf4/samd51/hal/src/hal_timer.c b/atmel-samd/asf4/samd51/hal/src/hal_timer.c deleted file mode 100644 index db0bbb8da..000000000 --- a/atmel-samd/asf4/samd51/hal/src/hal_timer.c +++ /dev/null @@ -1,263 +0,0 @@ -/** - * \file - * - * \brief Timer functionality implementation. - * - * Copyright (C) 2014 - 2016 Atmel Corporation. All rights reserved. - * - * \asf_license_start - * - * \page License - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * 3. The name of Atmel may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * 4. This software may only be redistributed and used in connection with an - * Atmel microcontroller product. - * - * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE - * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - * \asf_license_stop - * - */ - -#include "hal_timer.h" -#include <utils_assert.h> -#include <utils.h> -#include <hal_atomic.h> -#include <hpl_irq.h> - -/** - * \brief Driver version - */ -#define DRIVER_VERSION 0x00000001u - -/** - * \brief Timer flags - */ -#define TIMER_FLAG_QUEUE_IS_TAKEN 1 -#define TIMER_FLAG_INTERRUPT_TRIGERRED 2 - -static void timer_add_timer_task(struct list_descriptor *list, struct timer_task *const new_task, const uint32_t time); -static void timer_process_counted(struct _timer_device *device); - -/** - * \brief Initialize timer - */ -int32_t timer_init(struct timer_descriptor *const descr, void *const hw, struct _timer_hpl_interface *const func) -{ - ASSERT(descr && hw); - _timer_init(&descr->device, hw); - descr->time = 0; - descr->device.timer_cb.period_expired = timer_process_counted; - - return ERR_NONE; -} - -/** - * \brief Deinitialize timer - */ -int32_t timer_deinit(struct timer_descriptor *const descr) -{ - ASSERT(descr); - _timer_deinit(&descr->device); - - return ERR_NONE; -} - -/** - * \brief Start timer - */ -int32_t timer_start(struct timer_descriptor *const descr) -{ - ASSERT(descr); - if (_timer_is_started(&descr->device)) { - return ERR_DENIED; - } - _timer_start(&descr->device); - - return ERR_NONE; -} - -/** - * \brief Stop timer - */ -int32_t timer_stop(struct timer_descriptor *const descr) -{ - ASSERT(descr); - if (!_timer_is_started(&descr->device)) { - return ERR_DENIED; - } - _timer_stop(&descr->device); - - return ERR_NONE; -} - -/** - * \brief Set amount of clock cycler per timer tick - */ -int32_t timer_set_clock_cycles_per_tick(struct timer_descriptor *const descr, const uint32_t clock_cycles) -{ - ASSERT(descr); - _timer_set_period(&descr->device, clock_cycles); - - return ERR_NONE; -} - -/** - * \brief Add timer task - */ -int32_t timer_add_task(struct timer_descriptor *const descr, struct timer_task *const task) -{ - ASSERT(descr && task); - - descr->flags |= TIMER_FLAG_QUEUE_IS_TAKEN; - if (is_list_element(&descr->tasks, task)) { - descr->flags &= ~TIMER_FLAG_QUEUE_IS_TAKEN; - ASSERT(false); - return ERR_ALREADY_INITIALIZED; - } - task->time_label = descr->time; - timer_add_timer_task(&descr->tasks, task, descr->time); - - descr->flags &= ~TIMER_FLAG_QUEUE_IS_TAKEN; - if (descr->flags & TIMER_FLAG_INTERRUPT_TRIGERRED) { - CRITICAL_SECTION_ENTER() - descr->flags &= ~TIMER_FLAG_INTERRUPT_TRIGERRED; - _timer_set_irq(&descr->device); - CRITICAL_SECTION_LEAVE() - } - - return ERR_NONE; -} - -/** - * \brief Remove timer task - */ -int32_t timer_remove_task(struct timer_descriptor *const descr, const struct timer_task *const task) -{ - ASSERT(descr && task); - - descr->flags |= TIMER_FLAG_QUEUE_IS_TAKEN; - if (!is_list_element(&descr->tasks, task)) { - descr->flags &= ~TIMER_FLAG_QUEUE_IS_TAKEN; - ASSERT(false); - return ERR_NOT_FOUND; - } - list_delete_element(&descr->tasks, task); - - descr->flags &= ~TIMER_FLAG_QUEUE_IS_TAKEN; - if (descr->flags & TIMER_FLAG_INTERRUPT_TRIGERRED) { - CRITICAL_SECTION_ENTER() - descr->flags &= ~TIMER_FLAG_INTERRUPT_TRIGERRED; - _timer_set_irq(&descr->device); - CRITICAL_SECTION_LEAVE() - } - - return ERR_NONE; -} - -/** - * \brief Retrieve the amount of clock cycles in a tick - */ -int32_t timer_get_clock_cycles_in_tick(const struct timer_descriptor *const descr, uint32_t *const cycles) -{ - ASSERT(descr && cycles); - *cycles = _timer_get_period(&descr->device); - return ERR_NONE; -} - -/** - * \brief Retrieve the current driver version - */ -uint32_t timer_get_version(void) -{ - return DRIVER_VERSION; -} - -/** - * \internal Insert a timer task into sorted timer's list - * - * \param[in] head The pointer to the head of timer task list - * \param[in] task The pointer to task to add - * \param[in] time Current timer time - */ -static void timer_add_timer_task(struct list_descriptor *list, struct timer_task *const new_task, const uint32_t time) -{ - struct timer_task *it, *prev = NULL, *head = (struct timer_task *)list_get_head(list); - - if (!head) { - list_insert_as_head(list, new_task); - return; - } - - for (it = head; it; it = (struct timer_task *)list_get_next_element(it)) { - uint32_t time_left; - - if (it->time_label <= time) { - time_left = it->interval - (time - it->time_label); - } else { - time_left = it->interval - (0xFFFFFFFF - it->time_label) - time; - } - if (time_left >= new_task->interval) - break; - prev = it; - } - - if (it == head) { - list_insert_as_head(list, new_task); - } else { - list_insert_after(prev, new_task); - } -} - -/** - * \internal Process interrupts - */ -static void timer_process_counted(struct _timer_device *device) -{ - #pragma GCC diagnostic push - #pragma GCC diagnostic ignored "-Wcast-align" - struct timer_descriptor *timer = CONTAINER_OF(device, struct timer_descriptor, device); - #pragma GCC diagnostic pop - struct timer_task * it = (struct timer_task *)list_get_head(&timer->tasks); - uint32_t time = ++timer->time; - - if ((timer->flags & TIMER_FLAG_QUEUE_IS_TAKEN) || (timer->flags & TIMER_FLAG_INTERRUPT_TRIGERRED)) { - timer->flags |= TIMER_FLAG_INTERRUPT_TRIGERRED; - return; - } - - while (it && ((time - it->time_label) >= it->interval)) { - struct timer_task *tmp = it; - - list_remove_head(&timer->tasks); - if (TIMER_TASK_REPEAT == tmp->mode) { - tmp->time_label = time; - timer_add_timer_task(&timer->tasks, tmp, time); - } - it = (struct timer_task *)list_get_head(&timer->tasks); - - tmp->cb(tmp); - } -} |