178 lines
3.3 KiB
C
178 lines
3.3 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <string.h>
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#include "wrapper.h"
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#define ACTIVE 1
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#define NOT_ACTIVE 0
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static void zephyr_timer_wrapper(struct k_timer *timer);
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K_MEM_SLAB_DEFINE(cv2_timer_slab, sizeof(struct cv2_timer),
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CONFIG_CMSIS_V2_TIMER_MAX_COUNT, 4);
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static const osTimerAttr_t init_timer_attrs = {
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.name = "ZephyrTimer",
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.attr_bits = 0,
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.cb_mem = NULL,
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.cb_size = 0,
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};
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static void zephyr_timer_wrapper(struct k_timer *timer)
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{
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struct cv2_timer *cm_timer;
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cm_timer = CONTAINER_OF(timer, struct cv2_timer, z_timer);
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(cm_timer->callback_function)(cm_timer->arg);
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}
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/**
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* @brief Create a Timer
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*/
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osTimerId_t osTimerNew(osTimerFunc_t func, osTimerType_t type,
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void *argument, const osTimerAttr_t *attr)
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{
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struct cv2_timer *timer;
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if (type != osTimerOnce && type != osTimerPeriodic) {
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return NULL;
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}
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if (k_is_in_isr()) {
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return NULL;
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}
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if (attr == NULL) {
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attr = &init_timer_attrs;
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}
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if (k_mem_slab_alloc(&cv2_timer_slab, (void **)&timer, K_MSEC(100)) == 0) {
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(void)memset(timer, 0, sizeof(struct cv2_timer));
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} else {
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return NULL;
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}
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timer->callback_function = func;
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timer->arg = argument;
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timer->type = type;
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timer->status = NOT_ACTIVE;
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k_timer_init(&timer->z_timer, zephyr_timer_wrapper, NULL);
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if (attr->name == NULL) {
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strncpy(timer->name, init_timer_attrs.name,
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sizeof(timer->name) - 1);
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} else {
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strncpy(timer->name, attr->name, sizeof(timer->name) - 1);
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}
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return (osTimerId_t)timer;
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}
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/**
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* @brief Start or restart a Timer
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*/
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osStatus_t osTimerStart(osTimerId_t timer_id, uint32_t ticks)
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{
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struct cv2_timer *timer = (struct cv2_timer *)timer_id;
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if (timer == NULL) {
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return osErrorParameter;
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}
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if (k_is_in_isr()) {
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return osErrorISR;
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}
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if (timer->type == osTimerOnce) {
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k_timer_start(&timer->z_timer, K_TICKS(ticks), K_NO_WAIT);
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} else if (timer->type == osTimerPeriodic) {
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k_timer_start(&timer->z_timer,
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K_TICKS(ticks), K_TICKS(ticks));
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}
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timer->status = ACTIVE;
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return osOK;
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}
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/**
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* @brief Stop the Timer
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*/
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osStatus_t osTimerStop(osTimerId_t timer_id)
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{
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struct cv2_timer *timer = (struct cv2_timer *)timer_id;
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if (timer == NULL) {
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return osErrorParameter;
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}
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if (k_is_in_isr()) {
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return osErrorISR;
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}
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if (timer->status == NOT_ACTIVE) {
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return osErrorResource;
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}
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k_timer_stop(&timer->z_timer);
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timer->status = NOT_ACTIVE;
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return osOK;
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}
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/**
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* @brief Delete the timer that was created by osTimerCreate
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*/
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osStatus_t osTimerDelete(osTimerId_t timer_id)
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{
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struct cv2_timer *timer = (struct cv2_timer *) timer_id;
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if (timer == NULL) {
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return osErrorParameter;
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}
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if (k_is_in_isr()) {
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return osErrorISR;
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}
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if (timer->status == ACTIVE) {
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k_timer_stop(&timer->z_timer);
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timer->status = NOT_ACTIVE;
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}
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k_mem_slab_free(&cv2_timer_slab, (void *)timer);
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return osOK;
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}
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/**
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* @brief Get name of a timer.
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*/
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const char *osTimerGetName(osTimerId_t timer_id)
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{
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struct cv2_timer *timer = (struct cv2_timer *)timer_id;
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if (k_is_in_isr() || (timer == NULL)) {
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return NULL;
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}
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return timer->name;
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}
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/**
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* @brief Check if a timer is running.
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*/
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uint32_t osTimerIsRunning(osTimerId_t timer_id)
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{
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struct cv2_timer *timer = (struct cv2_timer *)timer_id;
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if (k_is_in_isr() || (timer == NULL)) {
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return 0;
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}
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return !(!(k_timer_remaining_get(&timer->z_timer)));
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}
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