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/*
* SPDX-FileCopyrightText: Copyright (c) 2025 Ha Thach (tinyusb.org)
* SPDX-License-Identifier: MIT
*
* This file is part of the TinyUSB stack.
*/
#ifndef TUSB_OSAL_ZEPHYR_H
#define TUSB_OSAL_ZEPHYR_H
#include <zephyr/kernel.h>
//--------------------------------------------------------------------+
// TASK API
//--------------------------------------------------------------------+
typedef k_tid_t osal_task_handle_t;
TU_ATTR_ALWAYS_INLINE static inline osal_task_handle_t osal_task_get_current_handle(void) {
return k_current_get();
}
TU_ATTR_ALWAYS_INLINE static inline void osal_task_delay(uint32_t msec) {
k_msleep(msec);
}
TU_ATTR_ALWAYS_INLINE static inline uint32_t osal_time_millis(void) {
return k_uptime_get_32();
}
//--------------------------------------------------------------------+
// Spinlock API
//--------------------------------------------------------------------+
typedef struct {
struct k_spinlock lock;
k_spinlock_key_t key;
} osal_spinlock_t;
#define OSAL_SPINLOCK_DEF(_name, _int_set) \
osal_spinlock_t _name
TU_ATTR_ALWAYS_INLINE static inline void osal_spin_init(osal_spinlock_t *ctx) {
(void) ctx;
}
TU_ATTR_ALWAYS_INLINE static inline void osal_spin_deinit(osal_spinlock_t *ctx) {
(void) ctx;
}
TU_ATTR_ALWAYS_INLINE static inline void osal_spin_lock(osal_spinlock_t *ctx, bool in_isr) {
if (!TUP_MCU_MULTIPLE_CORE && in_isr) {
return; // single core MCU does not need to lock in ISR
}
ctx->key = k_spin_lock(&ctx->lock);
}
TU_ATTR_ALWAYS_INLINE static inline void osal_spin_unlock(osal_spinlock_t *ctx, bool in_isr) {
if (!TUP_MCU_MULTIPLE_CORE && in_isr) {
return; // single core MCU does not need to lock in ISR
}
k_spin_unlock(&ctx->lock, ctx->key);
}
//--------------------------------------------------------------------+
// Binary Semaphore API
//--------------------------------------------------------------------+
typedef struct k_sem osal_semaphore_def_t, * osal_semaphore_t;
TU_ATTR_ALWAYS_INLINE static inline osal_semaphore_t osal_semaphore_create(osal_semaphore_def_t* semdef) {
k_sem_init(semdef, 0, 255);
return semdef;
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_semaphore_delete(osal_semaphore_t semd_hdl) {
(void) semd_hdl;
return true; // nothing to do
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_semaphore_post(osal_semaphore_t sem_hdl, bool in_isr) {
(void) in_isr;
k_sem_give(sem_hdl);
return true;
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_semaphore_wait(osal_semaphore_t sem_hdl, uint32_t msec) {
return 0 == k_sem_take(sem_hdl, K_MSEC(msec));
}
TU_ATTR_ALWAYS_INLINE static inline void osal_semaphore_reset(osal_semaphore_t sem_hdl) {
k_sem_reset(sem_hdl);
}
//--------------------------------------------------------------------+
// MUTEX API
//--------------------------------------------------------------------+
typedef struct k_mutex osal_mutex_def_t, *osal_mutex_t;
TU_ATTR_ALWAYS_INLINE static inline osal_mutex_t osal_mutex_create(osal_mutex_def_t* mdef) {
if ( 0 == k_mutex_init(mdef) ) {
return mdef;
} else {
return NULL;
}
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_mutex_delete(osal_mutex_t mutex_hdl) {
(void) mutex_hdl;
return true; // nothing to do
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_mutex_lock(osal_mutex_t mutex_hdl, uint32_t msec) {
return 0 == k_mutex_lock(mutex_hdl, K_MSEC(msec));
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_mutex_unlock(osal_mutex_t mutex_hdl) {
return 0 == k_mutex_unlock(mutex_hdl);
}
//--------------------------------------------------------------------+
// QUEUE API
//--------------------------------------------------------------------+
typedef struct k_msgq osal_queue_def_t, * osal_queue_t;
// role device/host is used by OS NONE for mutex (disable usb isr) only
#define OSAL_QUEUE_DEF(_int_set, _name, _depth, _type) K_MSGQ_DEFINE(_name, sizeof(_type), _depth, 4)
TU_ATTR_ALWAYS_INLINE static inline osal_queue_t osal_queue_create(osal_queue_def_t* qdef) {
// K_MSGQ_DEFINE already initializes the queue
return (osal_queue_t) qdef;
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_queue_delete(osal_queue_t qhdl) {
(void) qhdl;
return true;
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_queue_receive(osal_queue_t qhdl, void* data, uint32_t msec) {
return 0 == k_msgq_get(qhdl, data, K_MSEC(msec));
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_queue_send(osal_queue_t qhdl, void const* data, bool in_isr) {
return 0 == k_msgq_put(qhdl, data, in_isr ? K_NO_WAIT : K_FOREVER);
}
TU_ATTR_ALWAYS_INLINE static inline bool osal_queue_empty(osal_queue_t qhdl) {
return 0 == k_msgq_num_used_get(qhdl);
}
#endif
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