140 lines
2.7 KiB
C
140 lines
2.7 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 <cmsis_os.h>
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#include <string.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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struct timer_obj {
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struct k_timer ztimer;
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os_timer_type type;
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uint32_t status;
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void (*callback_function)(void const *argument);
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void *arg;
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};
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K_MEM_SLAB_DEFINE(cmsis_timer_slab, sizeof(struct timer_obj),
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CONFIG_CMSIS_TIMER_MAX_COUNT, __alignof__(struct timer_obj));
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static void zephyr_timer_wrapper(struct k_timer *timer)
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{
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struct timer_obj *cm_timer;
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cm_timer = CONTAINER_OF(timer, struct timer_obj, ztimer);
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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 osTimerCreate(const osTimerDef_t *timer_def, os_timer_type type,
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void *argument)
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{
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struct timer_obj *timer;
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if (timer_def == NULL) {
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return NULL;
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}
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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_mem_slab_alloc(&cmsis_timer_slab, (void **)&timer, K_MSEC(100)) == 0) {
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(void)memset(timer, 0, sizeof(struct timer_obj));
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} else {
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return NULL;
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}
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timer->callback_function = timer_def->ptimer;
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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->ztimer, zephyr_timer_wrapper, NULL);
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return (osTimerId)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 osTimerStart(osTimerId timer_id, uint32_t millisec)
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{
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struct timer_obj *timer = (struct timer_obj *) 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->ztimer, K_MSEC(millisec), K_NO_WAIT);
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} else if (timer->type == osTimerPeriodic) {
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k_timer_start(&timer->ztimer, K_MSEC(millisec),
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K_MSEC(millisec));
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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 osTimerStop(osTimerId timer_id)
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{
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struct timer_obj *timer = (struct timer_obj *) 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->ztimer);
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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 osTimerDelete(osTimerId timer_id)
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{
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struct timer_obj *timer = (struct timer_obj *) 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->ztimer);
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timer->status = NOT_ACTIVE;
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}
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k_mem_slab_free(&cmsis_timer_slab, (void *) &timer);
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return osOK;
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}
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