? ? ? ? 本文利用鸿蒙开发板HI3861在鸿蒙1.0.0源码下利用蜂鸣器播放音乐。
pwm_buz.c
#include <stdio.h>
#include "ohos_init.h"
#include "cmsis_os2.h"
#include "wifiiot_gpio.h"
#include "wifiiot_gpio_ex.h"
#include "wifiiot_pwm.h"
#include "hi_pwm.h"
#include "hi_time.h"
static const uint16_t g_tuneFreqs[]={
0, //Default clock,40MHz
//高音
38223, //1
34052, //2
30338,
28635,
25511,
22728,
20249, //7
51021,//-5 8
45454,//-6 9
40495//-7 10
};
static const uint8_t g_scoreNotes[]={
//the music score of Two Tigers
5,3,2,1,5,1,2,3,8,5,3,2,3,5,1,9,3,2,3,5,6,5,3,5,2,3,2,1,9,3,2,2,1,9,1,8,5,3,6,5,6,2,3,5,
};
static const uint8_t g_scoreDurations[]={
//the time for each note
3,1,2,2,8,4,2,2,8,3,1,4,2,2,4,2,2,8,4,4,6,2,4,4,3,1,2,2,4,4,2,4,2,4,4,8,6,2,4,4,4,2,2,8,
};
static void PwmBuzTask(void *arg)
{
(void) arg;
GpioInit();
IoSetFunc(WIFI_IOT_IO_NAME_GPIO_9,WIFI_IOT_IO_FUNC_GPIO_9_PWM0_OUT);
PwmInit(WIFI_IOT_PWM_PORT_PWM0);
/*A*/
PwmStart(WIFI_IOT_PWM_PORT_PWM0,20000,40000);
//this line may occur error
osDelay(100);
PwmStop(WIFI_IOT_PWM_PORT_PWM0);
/*B*/
hi_pwm_set_clock(PWM_CLK_XTAL);
for (size_t i=0;i<sizeof(g_scoreNotes)/sizeof(g_scoreNotes[0]);i++){
//here C< A/B,the order attention
uint32_t tune = g_scoreNotes[i]; //traverse the MusicScore and read the note
uint16_t freqDivisor = g_tuneFreqs[tune]; //the fequency of the note
uint32_t tuneInterval = g_scoreDurations[i] * (125 * 1000); //the time of the note
//para parepared
printf("%d %d %d\r\n",tune,freqDivisor);
PwmStart(WIFI_IOT_PWM_PORT_PWM0,freqDivisor/2, freqDivisor);
//占空比 50%
hi_udelay(tuneInterval);
//u -> us单位微秒。还有ndelay。mdelay
PwmStop(WIFI_IOT_PWM_PORT_PWM0);
}
}
static void PwmBuzEntry(void)
{
osThreadAttr_t attr = {0};
attr.name = "PwmBuzTask";
attr.stack_size = 4096;
attr.priority = osPriorityNormal;
if(osThreadNew(PwmBuzTask,NULL,&attr) == NULL){
printf("[PwmBuzEntry] create PwmBuzTask failed!\n");
}
}
SYS_RUN(PwmBuzEntry); BUILD.c文件
static_library("pwm_demo"){
sources = ["pwm_buz.c"]
include_dirs = [
"//third_party/cmsis/CMSIS/RTOS2/Include",
"//utils/native/lite/include",
"//base/iot_hardware/interfaces/kits/wifiiot_lite",
]
}
注意：
1.注意BUILD.gn文件名，BUILD五个字母均为大写
2.编译时可能出现"cmsis_os2.h"文件不存在的情况。此时将"cmsis_os2.h"文件源码复制到本级目录即可。"cmsis_os2.h"源码在文末给出
3.本代码只适用于1.0.0版本
4.自己想要的音阶在g_tuneFreqs中的值可以用40000000/频率估算，因为主频是40MHZ。
cmsis_os2.h源码
https://gitee.com/proud_321/third_party_cmsis/blob/master/cmsis_os2.h/*
* Copyright (c) 2013-2018 Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* ----------------------------------------------------------------------
*
* $Date: 18. June 2018
* $Revision: V2.1.3
*
* Project: CMSIS-RTOS2 API
* Title: cmsis_os2.h header file
*
* Version 2.1.3
* Additional functions allowed to be called from Interrupt Service Routines:
* - osThreadGetId
* Version 2.1.2
* Additional functions allowed to be called from Interrupt Service Routines:
* - osKernelGetInfo, osKernelGetState
* Version 2.1.1
* Additional functions allowed to be called from Interrupt Service Routines:
* - osKernelGetTickCount, osKernelGetTickFreq
* Changed Kernel Tick type to uint32_t:
* - updated: osKernelGetTickCount, osDelayUntil
* Version 2.1.0
* Support for critical and uncritical sections (nesting safe):
* - updated: osKernelLock, osKernelUnlock
* - added: osKernelRestoreLock
* Updated Thread and Event Flags:
* - changed flags parameter and return type from int32_t to uint32_t
* Version 2.0.0
* Initial Release
*---------------------------------------------------------------------------*/
/**
* @addtogroup CMSIS
* @{
*
* @brief Provides standard, universal real-time operating system (RTOS) APIs.
*
* CMSIS Module may contain portions from ARM Cortex Microcontroller Software Interface Standard (CMSIS) licensed under Apache License v2.0.
*
* @since 1.0
* @version 1.0
*/
#ifndef CMSIS_OS2_H_
#define CMSIS_OS2_H_
#ifndef __NO_RETURN
#if defined(__CC_ARM)
#define __NO_RETURN __declspec(noreturn)
#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
#define __NO_RETURN __attribute__((__noreturn__))
#elif defined(__GNUC__)
#define __NO_RETURN __attribute__((__noreturn__))
#elif defined(__ICCARM__)
#define __NO_RETURN __noreturn
#else
#define __NO_RETURN
#endif
#endif
#include <stdint.h>
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
// ==== Enumerations, structures, defines ====
/**
* @brief Describes the system version.
*
* @since 1.0
* @version 1.0
*/
typedef struct {
/** API version */
uint32_t api;
/** Kernel version */
uint32_t kernel;
} osVersion_t;
/**
* @brief Enumerates kernel states.
*
*/
typedef enum {
/** The kernel is inactive. */
osKernelInactive = 0,
/** The kernel is ready. */
osKernelReady = 1,
/** The kernel is running. */
osKernelRunning = 2,
/** The kernel is locked. */
osKernelLocked = 3,
/** The kernel is suspended. */
osKernelSuspended = 4,
/** The kernel is abnormal. */
osKernelError = -1,
/** Reserved */
osKernelReserved = 0x7FFFFFFFU
} osKernelState_t;
/**
* @brief Enumerates thread states.
*
*/
typedef enum {
/** The thread is inactive. */
osThreadInactive = 0,
/** The thread is ready. */
osThreadReady = 1,
/** The thread is running. */
osThreadRunning = 2,
/** The thread is blocked. */
osThreadBlocked = 3,
/** The thread is terminated. */
osThreadTerminated = 4,
/** The thread is abnormal. */
osThreadError = -1,
/** Reserved */
osThreadReserved = 0x7FFFFFFF
} osThreadState_t;
/**
* @brief Enumerates thread priorities.
*
*/
typedef enum {
/** Undefined */
osPriorityNone = 0,
/** Reserved for idle threads */
osPriorityIdle = 1,
/** Low (unsupported) */
osPriorityLow = 8,
/** Low + 1 */
osPriorityLow1 = 8+1,
/** Low + 2 */
osPriorityLow2 = 8+2,
/** Low + 3 */
osPriorityLow3 = 8+3,
/** Low + 4 */
osPriorityLow4 = 8+4,
/** Low + 5 */
osPriorityLow5 = 8+5,
/** Low + 6 */
osPriorityLow6 = 8+6,
/** Low + 7 */
osPriorityLow7 = 8+7,
/** Below normal */
osPriorityBelowNormal = 16,
/** Below normal + 1 */
osPriorityBelowNormal1 = 16+1,
/** Below normal + 2 */
osPriorityBelowNormal2 = 16+2,
/** Below normal + 3 */
osPriorityBelowNormal3 = 16+3,
/** Below normal + 4 */
osPriorityBelowNormal4 = 16+4,
/** Below normal + 5 */
osPriorityBelowNormal5 = 16+5,
/** Below normal + 6 */
osPriorityBelowNormal6 = 16+6,
/** Below normal + 7 */
osPriorityBelowNormal7 = 16+7,
/** Normal */
osPriorityNormal = 24,
/** Normal + 1 */
osPriorityNormal1 = 24+1,
/** Normal + 2 */
osPriorityNormal2 = 24+2,
/** Normal + 3 */
osPriorityNormal3 = 24+3,
/** Normal + 4 */
osPriorityNormal4 = 24+4,
/** Normal + 5 */
osPriorityNormal5 = 24+5,
/** Normal + 6 */
osPriorityNormal6 = 24+6,
/** Normal + 7 */
osPriorityNormal7 = 24+7,
/** Above normal */
osPriorityAboveNormal = 32,
/** Above normal + 1 */
osPriorityAboveNormal1 = 32+1,
/** Above normal + 2 */
osPriorityAboveNormal2 = 32+2,
/** Above normal + 3 */
osPriorityAboveNormal3 = 32+3,
/** Above normal + 4 */
osPriorityAboveNormal4 = 32+4,
/** Above normal + 5 */
osPriorityAboveNormal5 = 32+5,
/** Above normal + 6 */
osPriorityAboveNormal6 = 32+6,
/** Above normal + 7 (unsupported) */
osPriorityAboveNormal7 = 32+7,
/** High (unsupported) */
osPriorityHigh = 40,
/** High + 1 (unsupported) */
osPriorityHigh1 = 40+1,
/** High + 2 (unsupported) */
osPriorityHigh2 = 40+2,
/** High + 3 (unsupported) */
osPriorityHigh3 = 40+3,
/** High + 4 (unsupported) */
osPriorityHigh4 = 40+4,
/** High + 5 (unsupported) */
osPriorityHigh5 = 40+5,
/** High + 6 (unsupported) */
osPriorityHigh6 = 40+6,
/** High + 7 (unsupported) */
osPriorityHigh7 = 40+7,
/** Real-time (unsupported) */
osPriorityRealtime = 48,
/** Real-time + 1 (unsupported) */
osPriorityRealtime1 = 48+1,
/** Real-time + 2 (unsupported) */
osPriorityRealtime2 = 48+2,
/** Real-time + 3 (unsupported) */
osPriorityRealtime3 = 48+3,
/** Real-time + 4 (unsupported) */
osPriorityRealtime4 = 48+4,
/** Real-time + 5 (unsupported) */
osPriorityRealtime5 = 48+5,
/** Real-time + 6 (unsupported) */
osPriorityRealtime6 = 48+6,
/** Real-time + 7 (unsupported) */
osPriorityRealtime7 = 48+7,
/** Reserved for ISR deferred threads (unsupported) */
osPriorityISR = 56,
/** Invalid */
osPriorityError = -1,
/** Reserved. It enables the compiler to identify enumeration variables as 32-bit numbers and prevents the enumeration variables from being optimized. */
osPriorityReserved = 0x7FFFFFFF
} osPriority_t;
/**
* @brief Callback for thread scheduling
*
*/
typedef void (*osThreadFunc_t) (void *argument);
/**
* @brief Callback for timer triggering
*
*/
typedef void (*osTimerFunc_t) (void *argument);
/**
* @brief Enumerates timer types.
*
*/
typedef enum {
/** One-shot timer */
osTimerOnce = 0,
/** Repeating timer */
osTimerPeriodic = 1
} osTimerType_t;
/**
* @brief Indicates that the RTOS waits forever unless an event flag is received.
*
*/
#define osWaitForever 0xFFFFFFFFU
/**
* @brief Indicates that the RTOS does not wait.
*
*/
#define osNoWait 0x0U
/**
* @brief Indicates that the RTOS waits until any event flag is triggered.
*
*/
#define osFlagsWaitAny 0x00000000U
/**
* @brief Indicates that the system waits until all event flags are triggered.
*
*/
#define osFlagsWaitAll 0x00000001U
/**
* @brief Indicates that defined flags are not cleared.
*
*/
#define osFlagsNoClear 0x00000002U
/**
* @brief Indicates a flag error.
*
*/
#define osFlagsError 0x80000000U
/**
* @brief Indicates an unknown error.
*
*/
#define osFlagsErrorUnknown 0xFFFFFFFFU
/**
* @brief Indicates a timeout.
*
*/
#define osFlagsErrorTimeout 0xFFFFFFFEU
/**
* @brief Indicates a resource error.
*
*/
#define osFlagsErrorResource 0xFFFFFFFDU
/**
* @brief Indicates an incorrect parameter.
*
*/
#define osFlagsErrorParameter 0xFFFFFFFCU
#define osFlagsErrorISR 0xFFFFFFFAU
// Thread attributes (attr_bits in \ref osThreadAttr_t).
#define osThreadDetached 0x00000000U
#define osThreadJoinable 0x00000001U
// Mutex attributes (attr_bits in \ref osMutexAttr_t).
#define osMutexRecursive 0x00000001U
#define osMutexPrioInherit 0x00000002U
#define osMutexRobust 0x00000008U
/**
* @brief Enumerates return values of CMSIS-RTOS.
*
*/
typedef enum {
/** Operation completed successfully */
osOK = 0,
/** Unspecified error */
osError = -1,
/** Timeout */
osErrorTimeout = -2,
/** Resource error */
osErrorResource = -3,
/** Incorrect parameter */
osErrorParameter = -4,
/** Insufficient memory */
osErrorNoMemory = -5,
/** Service interruption */
osErrorISR = -6,
/** Reserved. It is used to prevent the compiler from optimizing enumerations. */
osStatusReserved = 0x7FFFFFFF
} osStatus_t;
/**
* @brief Identifies a thread.
*
*/
typedef void *osThreadId_t;
/**
* @brief Identifies a timer.
*
*/
typedef void *osTimerId_t;
/**
* @brief Identifies an event flag.
*
*/
typedef void *osEventFlagsId_t;
/**
* @brief Identifies a mutex.
*
*/
typedef void *osMutexId_t;
/**
* @brief Identifies a semaphore object.
*
*/
typedef void *osSemaphoreId_t;
typedef void *osMemoryPoolId_t;
/**
* @brief Identifies a message queue.
*
*/
typedef void *osMessageQueueId_t;
#ifndef TZ_MODULEID_T
#define TZ_MODULEID_T
/**
* @brief Identifies a TrustZone module call process.
*
*/
typedef uint32_t TZ_ModuleId_t;
#endif
/**
* @brief Describes thread attributes.
*
* @since 1.0
* @version 1.0
*/
typedef struct {
/** Thread name */
const char *name;
/** Thread attribute bits */
uint32_t attr_bits;
/** Memory for the thread control block */
void *cb_mem;
/** Size of the memory for the thread control block */
uint32_t cb_size;
/** Memory for the thread stack */
void *stack_mem;
/** Size of the thread stack */
uint32_t stack_size;
/** Thread priority */
osPriority_t priority;
/** TrustZone module of the thread */
TZ_ModuleId_t tz_module;
/** Reserved */
uint32_t reserved;
} osThreadAttr_t;
/**
* @brief Describes timer attributes.
*
* @since 1.0
* @version 1.0
*/
typedef struct {
/** Timer name */
const char *name;
/** Reserved attribute bits */
uint32_t attr_bits;
/** Memory for the timer control block */
void *cb_mem;
/** Size of the memory for the timer control block */
uint32_t cb_size;
} osTimerAttr_t;
/**
* @brief Describes event attributes.
*
* @since 1.0
* @version 1.0
*/
typedef struct {
/** Event name */
const char *name;
/** Reserved attribute bits */
uint32_t attr_bits;
/** Memory for the event control block */
void *cb_mem;
/** Size of the memory for the event control block */
uint32_t cb_size;
} osEventFlagsAttr_t;
/**
* @brief Describes mutex attributes.
*
* @since 1.0
* @version 1.0
*/
typedef struct {
/** Mutex name */
const char *name;
/** Reserved attribute bits */
uint32_t attr_bits;
/** Memory for the mutex control block */
void *cb_mem;
/** Size of the memory for the mutex control block */
uint32_t cb_size;
} osMutexAttr_t;
/**
* @brief Describes semaphore attributes.
*
* @since 1.0
* @version 1.0
*/
typedef struct {
/** Semaphore name */
const char *name;
/** Reserved attribute bits */
uint32_t attr_bits;
/** Memory for the semaphore control block */
void *cb_mem;
/** Size of the memory for the semaphore control block */
uint32_t cb_size;
} osSemaphoreAttr_t;
typedef struct {
const char *name;
uint32_t attr_bits;
void *cb_mem;
uint32_t cb_size;
void *mp_mem;
uint32_t mp_size;
} osMemoryPoolAttr_t;
/**
* @brief Describes message queue attributes.
*
* @since 1.0
* @version 1.0
*/
typedef struct {
/** Message queue name */
const char *name;
/** Reserved attribute bits */
uint32_t attr_bits;
/** Memory for the message queue control block */
void *cb_mem;
/** Size of the memory for the message queue control block */
uint32_t cb_size;
/** Memory for storing data in the message queue */
void *mq_mem;
/** Size of the memory for storing data in the message queue */
uint32_t mq_size;
} osMessageQueueAttr_t;
// ==== Kernel Management Functions ====
/**
* @brief Initializes the RTOS kernel.
*
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osKernelInitialize (void);
/**
* @brief Obtains the system version and name.
*
* @param version Indicates the pointer to the buffer for storing the version.
* @param id_buf Indicates the pointer to the buffer for storing the kernel ID.
* @param id_size Indicates the size of the buffer for storing the kernel ID.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osKernelGetInfo (osVersion_t *version, char *id_buf, uint32_t id_size);
/**
* @brief Obtains the kernel state.
*
* @return Returns the kernel state.
* @since 1.0
* @version 1.0
*/
osKernelState_t osKernelGetState (void);
/**
* @brief Starts the kernel.
*
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osKernelStart (void);
/**
* @brief Locks the kernel.
*
* @return Returns 1 if the kernel is locked successfully; returns 0 if the lock starts; returns a negative value in the case of an error.
* @since 1.0
* @version 1.0
*/
int32_t osKernelLock (void);
/**
* @brief Unlocks the kernel.
*
* @return Returns 1 if the kernel is unlocked successfully; returns 0 if the kernel is not locked; returns a negative value in the case of an error.
* @since 1.0
* @version 1.0
*/
int32_t osKernelUnlock (void);
/**
* @brief Restores the previous lock state of the kernel.
*
* @param lock Indicates the lock state to restore to. The value 1 indicates the locked state, and 0 indicates the unlocked state.
* @return Returns 1 if the kernel is locked; returns 0 if the kernel is not locked; returns a negative value in the case of an error.
* @since 1.0
* @version 1.0
*/
int32_t osKernelRestoreLock (int32_t lock);
uint32_t osKernelSuspend (void);
void osKernelResume (uint32_t sleep_ticks);
/// Get the RTOS kernel tick count.
/// \return RTOS kernel current tick count.
uint32_t osKernelGetTickCount (void);
/**
* @brief Obtains the number of kernel ticks per second.
*
* @return Returns the number of kernel ticks.
* @since 1.0
* @version 1.0
*/
uint32_t osKernelGetTickFreq (void);
/**
* @brief Obtains the kernel system timer.
*
* @return Returns the kernel system timer.
* @since 1.0
* @version 1.0
*/
uint32_t osKernelGetSysTimerCount (void);
/**
* @brief Obtains the frequency of the system timer.
*
* @return Returns the system timer frequency.
* @since 1.0
* @version 1.0
*/
uint32_t osKernelGetSysTimerFreq (void);
// ==== Thread Management Functions ====
/**
* @brief Creates an active thread.
*
* The task priority ranges from 9 (highest priority) to 38 (lowest priority). {@code LOSCFG_BASE_CORE_TSK_LIMIT} declared in target_config.h specifies the
maximum number of tasks running in this system.
* @param func Indicates the entry of the thread callback function.
* @param argument Indicates the pointer to the argument passed to the thread.
* @param attr Indicates the thread attributes.
* @return Returns the thread ID; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
osThreadId_t osThreadNew (osThreadFunc_t func, void *argument, const osThreadAttr_t *attr);
/**
* @brief Obtains the name of a thread.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @return Returns the thread name; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
const char *osThreadGetName (osThreadId_t thread_id);
/**
* @brief Obtains the ID of the currently running thread.
*
* @return Returns the thread ID; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
osThreadId_t osThreadGetId (void);
/**
* @brief Obtains the state of a thread.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @return Returns the thread state.
* @since 1.0
* @version 1.0
*/
osThreadState_t osThreadGetState (osThreadId_t thread_id);
/**
* @brief Obtains the stack size of a thread.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @return Returns the stack size, in bytes; returns 0 in the case of an error.
* @since 1.0
* @version 1.0
*/
uint32_t osThreadGetStackSize (osThreadId_t thread_id);
/**
* @brief Obtains the size of the available stack space for a thread based on the stack watermark.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @return Returns the available stack size, in bytes; returns 0 in the case of an error.
* @since 1.0
* @version 1.0
*/
uint32_t osThreadGetStackSpace (osThreadId_t thread_id);
/**
* @brief Changes the priority of a thread.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @param priority Indicates the new priority.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osThreadSetPriority (osThreadId_t thread_id, osPriority_t priority);
/**
* @brief Gets the prority of an active thread.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @return Returns the prority of the thread.
* @since 1.0
* @version 1.0
*/
osPriority_t osThreadGetPriority (osThreadId_t thread_id);
/**
* @brief Sets the currently running thread to the ready state.
*
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osThreadYield (void);
/**
* @brief Suspends a thread.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osThreadSuspend (osThreadId_t thread_id);
/**
* @brief Resumes a thread from the suspended state.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osThreadResume (osThreadId_t thread_id);
osStatus_t osThreadDetach (osThreadId_t thread_id);
osStatus_t osThreadJoin (osThreadId_t thread_id);
void osThreadExit (void);
/**
* @brief Terminates a thread.
*
* @param thread_id Indicates the thread ID, which is obtained using osThreadNew or osThreadGetId.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osThreadTerminate (osThreadId_t thread_id);
/**
* @brief Obtains the number of active threads.
*
* @return Returns the number; returns 0 in the case of an error.
* @since 1.0
* @version 1.0
*/
uint32_t osThreadGetCount (void);
uint32_t osThreadEnumerate (osThreadId_t *thread_array, uint32_t array_items);
// ==== Thread Flags Functions ====
uint32_t osThreadFlagsSet (osThreadId_t thread_id, uint32_t flags);
uint32_t osThreadFlagsClear (uint32_t flags);
uint32_t osThreadFlagsGet (void);
uint32_t osThreadFlagsWait (uint32_t flags, uint32_t options, uint32_t timeout);
// ==== Generic Wait Functions ====
/**
* @brief Waits for a period of time.
*
* @param ticks Indicates the number of ticks to wait for.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osDelay (uint32_t ticks);
/**
* @brief Waits until a specified time arrives.
*
* This function handles the overflow of the system timer. Note that the maximum value of this parameter is (2^31 - 1) ticks.
* @param ticks Indicates the number of ticks converted from the absolute time.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osDelayUntil (uint32_t ticks);
// ==== Timer Management Functions ====
/**
* @brief Creates and initializes a timer.
*
* This function creates a timer associated with the arguments callback function. The timer stays in the stopped state until OSTimerStart is used to start the timer.
* The timer precision is 1000 / LOSCFG_BASE_CORE_TICK_PER_SECOND ms(LOSCFG_BASE_CORE_TICK_PER_SECOND is defined in the traget_config.h).
* @param func Indicates the entry of the timer callback function.
* @param type Indicates the timer type.
* @param argument Indicates the pointer to the argument used in timer callback.
* @param attr Indicates the pointer to the timer attributes. This parameter is not used.
* @return Returns the timer ID; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
osTimerId_t osTimerNew (osTimerFunc_t func, osTimerType_t type, void *argument, const osTimerAttr_t *attr);
/**
* @brief Obtains the timer name.
*
* @param timer_id Indicates the timer ID, which is obtained using osTimerNew.
* @return Returns the timer name; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
const char *osTimerGetName (osTimerId_t timer_id);
/**
* @brief Starts or restarts a timer.
*
* @param timer_id Indicates the timer ID, which is obtained using osTimerNew.
* @param ticks Indicates the number of ticks since the timer starts running.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osTimerStart (osTimerId_t timer_id, uint32_t ticks);
/**
* @brief Stops a timer.
*
* @param timer_id Indicates the timer ID, which is obtained using osTimerNew.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osTimerStop (osTimerId_t timer_id);
/**
* @brief Checks whether a timer is running.
*
* @param timer_id Indicates the timer ID, which is obtained using osTimerNew.
* @return Returns 1 if the timer is running; returns 0 otherwise.
* @since 1.0
* @version 1.0
*/
uint32_t osTimerIsRunning (osTimerId_t timer_id);
/**
* @brief Deletes a timer.
*
* @param timer_id Indicates the timer ID, which is obtained using osTimerNew.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osTimerDelete (osTimerId_t timer_id);
// ==== Event Flags Management Functions ====
/**
* @brief Creates and initializes an event flags object.
*
* @param attr Indicates the pointer to the event flags attributes. This parameter is not used.
* @return Returns the event flags ID; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
osEventFlagsId_t osEventFlagsNew (const osEventFlagsAttr_t *attr);
/**
* @brief Obtains the name of an event flags object.
*
* @param ef_id Indicates the event flags ID, which is obtained using osEventFlagsNew.
* @return Returns the event flags name; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
const char *osEventFlagsGetName (osEventFlagsId_t ef_id);
/**
* @brief Sets event flags.
*
* @param ef_id Indicates the event flags ID, which is obtained using osEventFlagsNew.
* @param flags Indicates the event flags to set.
* @return Returns the event flags; returns osFlagsErrorParameter in the case of an error.
* @since 1.0
* @version 1.0
*/
uint32_t osEventFlagsSet (osEventFlagsId_t ef_id, uint32_t flags);
/**
* @brief Clears event flags.
*
* @param ef_id Indicates the event flags ID, which is obtained using osEventFlagsNew.
* @param flags Indicates the event flags to clear.
* @return Returns the event flags; returns osFlagsErrorParameter in the case of an error.
* @since 1.0
* @version 1.0
*/
uint32_t osEventFlagsClear (osEventFlagsId_t ef_id, uint32_t flags);
/**
* @brief Obtains event flags.
*
* @param ef_id Indicates the event flags ID, which is obtained using osEventFlagsNew.
* @return Returns the event flags triggered.
* @since 1.0
* @version 1.0
*/
uint32_t osEventFlagsGet (osEventFlagsId_t ef_id);
/**
* @brief Waits for event flags to trigger.
*
* This function is blocked if the specified event flags are not set via {@code flags}.
* @param ef_id Indicates the event flags ID, which is obtained using osEventFlagsNew.
* @param flags Indicates the event flags to trigger.
* @param options Indicates the configuration of the event flags to trigger.
* @param timeout Indicates the timeout duration.
* @return Returns the triggered event flags; returns an error value in the case of an error.
* @since 1.0
* @version 1.0
*/
uint32_t osEventFlagsWait (osEventFlagsId_t ef_id, uint32_t flags, uint32_t options, uint32_t timeout);
/**
* @brief Deletes an event flags object.
*
* @param ef_id Indicates the event flags ID, which is obtained using osEventFlagsNew.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osEventFlagsDelete (osEventFlagsId_t ef_id);
// ==== Mutex Management Functions ====
/**
* @brief Creates and initializes a mutex.
*
* @param attr Indicates the pointer to the mutex attributes. This parameter is not used.
* @return Returns the mutex ID; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
osMutexId_t osMutexNew (const osMutexAttr_t *attr);
const char *osMutexGetName (osMutexId_t mutex_id);
/**
* @brief Obtains a mutex.
*
* @param mutex_id Indicates the mutex ID, which is obtained using osMutexNew.
* @param timeout Indicates the timeout duration.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osMutexAcquire (osMutexId_t mutex_id, uint32_t timeout);
/**
* @brief Releases a mutex.
*
* @param mutex_id Indicates the mutex ID, which is obtained using osMutexNew.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osMutexRelease (osMutexId_t mutex_id);
/**
* @brief Obtains the thread ID of the currently acquired mutex.
*
* @param mutex_id Indicates the mutex ID, which is obtained using osMutexNew.
* @return Returns the thread ID.
* @since 1.0
* @version 1.0
*/
osThreadId_t osMutexGetOwner (osMutexId_t mutex_id);
/**
* @brief Deletes a mutex.
*
* @param mutex_id Indicates the mutex ID, which is obtained using osMutexNew.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osMutexDelete (osMutexId_t mutex_id);
// ==== Semaphore Management Functions ====
/**
* @brief Creates and initializes a semaphore object.
*
* @param max_count Indicates the maximum number of available tokens that can be applied for.
* @param initial_count Indicates the initial number of available tokens.
* @param attr Indicates the pointer to the semaphore attributes. This parameter is not used.
* @return Returns the semaphore ID; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
osSemaphoreId_t osSemaphoreNew (uint32_t max_count, uint32_t initial_count, const osSemaphoreAttr_t *attr);
const char *osSemaphoreGetName (osSemaphoreId_t semaphore_id);
/**
* @brief Acquires a token of a semaphore object.
*
* @param semaphore_id Indicates the semaphore ID, which is obtained using osSemaphoreNew.
* @param timeout Indicates the timeout duration, in ticks.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osSemaphoreAcquire (osSemaphoreId_t semaphore_id, uint32_t timeout);
/**
* @brief Releases a token of a semaphore object.
*
* @param semaphore_id Indicates the semaphore ID, which is obtained using osSemaphoreNew.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osSemaphoreRelease (osSemaphoreId_t semaphore_id);
/**
* @brief Obtains the number of available tokens of a semaphore object.
*
* @param semaphore_id Indicates the semaphore ID, which is obtained using osSemaphoreNew.
* @return Returns the number of available tokens.
* @since 1.0
* @version 1.0
*/
uint32_t osSemaphoreGetCount (osSemaphoreId_t semaphore_id);
/**
* @brief Deletes a semaphore object.
*
* @param semaphore_id Indicates the semaphore ID, which is obtained using osSemaphoreNew.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osSemaphoreDelete (osSemaphoreId_t semaphore_id);
// ==== Memory Pool Management Functions ====
osMemoryPoolId_t osMemoryPoolNew (uint32_t block_count, uint32_t block_size, const osMemoryPoolAttr_t *attr);
const char *osMemoryPoolGetName (osMemoryPoolId_t mp_id);
void *osMemoryPoolAlloc (osMemoryPoolId_t mp_id, uint32_t timeout);
osStatus_t osMemoryPoolFree (osMemoryPoolId_t mp_id, void *block);
uint32_t osMemoryPoolGetCapacity (osMemoryPoolId_t mp_id);
uint32_t osMemoryPoolGetBlockSize (osMemoryPoolId_t mp_id);
uint32_t osMemoryPoolGetCount (osMemoryPoolId_t mp_id);
uint32_t osMemoryPoolGetSpace (osMemoryPoolId_t mp_id);
osStatus_t osMemoryPoolDelete (osMemoryPoolId_t mp_id);
// ==== Message Queue Management Functions ====
/**
* @brief Creates and initializes a message queue.
*
* @param msg_count Indicates the number of messages in the message queue.
* @param msg_size Indicates the size of messages in the message queue.
* @param attr Indicates the pointer to the message queue attributes. This parameter is not used.
* @return Returns the message queue ID; returns NULL in the case of an error.
* @since 1.0
* @version 1.0
*/
osMessageQueueId_t osMessageQueueNew (uint32_t msg_count, uint32_t msg_size, const osMessageQueueAttr_t *attr);
const char *osMessageQueueGetName (osMessageQueueId_t mq_id);
/**
* @brief Places a message in a message queue.
*
* @param mq_id Indicates the message queue ID, which is obtained using osMessageQueueNew.
* @param msg_ptr Indicates the pointer to the buffer for storing the message to be placed in the message queue.
* @param msg_prio Indicates the priority of the message to be placed in the message queue. This parameter is not used.
* @param timeout Indicates the timeout duration.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osMessageQueuePut (osMessageQueueId_t mq_id, const void *msg_ptr, uint8_t msg_prio, uint32_t timeout);
/**
* @brief Obtains a message in a message queue.
*
* @param mq_id Indicates the message queue ID, which is obtained using osMessageQueueNew.
* @param msg_ptr Indicates the pointer to the buffer for storing the message to be retrieved from the message queue.
* @param msg_prio Indicates the pointer to the buffer for storing the priority of the message to be retrieved from the message queue. This parameter is not used.
* @param timeout Indicates the timeout duration.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osMessageQueueGet (osMessageQueueId_t mq_id, void *msg_ptr, uint8_t *msg_prio, uint32_t timeout);
/**
* @brief Obtains the maximum number of messages that can be placed in a message queue.
*
* @param mq_id Indicates the message queue ID, which is obtained using osMessageQueueNew.
* @return Returns the maximum number.
* @since 1.0
* @version 1.0
*/
uint32_t osMessageQueueGetCapacity (osMessageQueueId_t mq_id);
/**
* @brief Obtains the maximum size of messages that can be placed in a message queue.
*
* @param mq_id Indicates the message queue ID, which is obtained using osMessageQueueNew.
* @return Returns the maximum message size.
* @since 1.0
* @version 1.0
*/
uint32_t osMessageQueueGetMsgSize (osMessageQueueId_t mq_id);
/**
* @brief Obtains the number of queued messages in a message queue.
*
* @param mq_id Indicates the message queue ID, which is obtained using osMessageQueueNew.
* @return Returns the number of queued messages.
* @since 1.0
* @version 1.0
*/
uint32_t osMessageQueueGetCount (osMessageQueueId_t mq_id);
/**
* @brief Obtains the number of available slots for messages in a message queue.
*
* @param mq_id Indicates the message queue ID, which is obtained using osMessageQueueNew.
* @return Returns the number of available slots for messages.
* @since 1.0
* @version 1.0
*/
uint32_t osMessageQueueGetSpace (osMessageQueueId_t mq_id);
osStatus_t osMessageQueueReset (osMessageQueueId_t mq_id);
/**
* @brief Deletes a message queue.
*
* @param mq_id Indicates the message queue ID, which is obtained using osMessageQueueNew.
* @return Returns the CMSIS-RTOS running result.
* @since 1.0
* @version 1.0
*/
osStatus_t osMessageQueueDelete (osMessageQueueId_t mq_id);
#ifdef __cplusplus
}
#endif
#endif // CMSIS_OS2_H_