Sample development of WiFi IOT Hongmeng development kit

HiSpark WiFi-IoT Hongmeng Development Kit   First appeared in HDC 2020, Is the first to support HarmonyOS 2.0 Development of Kit , It is also the official recommended kit of Hongmeng , By Runhe Software HiHope Tailored , It has been widely used in Hongmeng community and Hongmeng developers . One 、Thread API osThreadNew() osThreadId_t osThreadNew(osThreadFunc_t        func, void *argument,const osThreadAttr_t *attr )        Copy Be careful : This function cannot be called when a service is interrupted Parameters osThreadTerminate() osStatus_t osThreadTerminate (osThreadId_t thread_id) Copy Two 、 The code analysis Create thread , If the creation is successful, the thread name and thread will be printed ID osThreadId_t newThread(char *name, osThreadFunc_t func, void *arg) {    osThreadAttr_t attr = {        name, 0, NULL, 0, NULL, 1024*2, osPriorityNormal, 0, 0    };    osThreadId_t tid = osThreadNew(func, arg, &attr);    if (tid == NULL) {        printf("osThreadNew(%s) faiLED.\r\n", name);    } else {        printf("osThreadNew(%s) success, thread id: %d.\r\n", name, tid);    }    return tid;} Copy This function first prints its own parameters , Then the global variables count Cycle through +1 operation , Then print count Value void threadTest(void *arg) {    static int count = 0;    printf("%s\r\n",(char *)arg);    osThreadId_t tid = osThreadGetId();    printf("threadTest osThreadGetId, thread id:%p\r\n", tid);    while (1) {        count++;        printf("threadTest, count: %d.\r\n", count);        osDelay(20);    }} Copy The main program rtosv2_thread_main Create threads and run , And use the above API Carry out relevant operations , Finally, terminate the created thread . void rtosv2_thread_main(void *arg) {    (void)arg;    osThreadId_t tid=newThread("test_thread", threadTest, "This is a test thread.");    const char *t_name = osThreadGetName(tid);    printf("[Thread Test]osThreadGetName, thread name: %s.\r\n", t_name);    osThreadState_t state = osThreadGetState(tid);    printf("[Thread Test]osThreadGetState, state :%d.\r\n", state);    osStatus_t status = osThreadSetPriority(tid, osPriorityNormal4);    printf("[Thread Test]osThreadSetPriority, status: %d.\r\n", status);    osPriority_t pri = osThreadGetPriority (tid);       printf("[Thread Test]osThreadGetPriority, priority: %d.\r\n", pri);    status = osThreadSuspend(tid);    printf("[Thread Test]osThreadSuspend, status: %d.\r\n", status);      status = osThreadResume(tid);    printf("[Thread Test]osThreadResume, status: %d.\r\n", status);    uint32_t stacksize = osThreadGetStackSize(tid);    printf("[Thread Test]osThreadGetStackSize, stacksize: %d.\r\n", stacksize);    uint32_t stackspace = osThreadGetStackSpace(tid);    printf("[Thread Test]osThreadGetStackSpace, stackspace: %d.\r\n", stackspace);    uint32_t t_count = osThreadGetCount();    printf("[Thread Test]osThreadGetCount, count: %d.\r\n", t_count);      osDelay(100);    status = osThreadTerminate(tid);    printf("[Thread Test]osThreadTerminate, status: %d.\r\n", status);} 3、 ... and 、 How to compile Put... In this directory thread.c and BUILD.gn Copied to the openharmony Source code applications\sample\wifi-iot\app\iothardware Under the table of contents , modify openharmony Source code applications\sample\wifi-iot\app\BUILD.gn file , Will be one of the features Change it to ：     features = [        "iothardware:thread_demo",    ] Copy 3. stay openharmony The top-level directory of the source code executes ：python build.py wifiiot Four 、 Running results [Thread Test] osThreadNew(test_thread) success.[Thread Test] osThreadGetName, thread name: test_thread.[Thread Test] osThreadGetState, state :1.[Thread Test] This is a test thread.  <-testThread log[Thread Test] threadTest osThreadGetId, thread id:0xe8544[Thread Test] threadTest, count: 1.   <-testThread log[Thread Test] osThreadSetPriority, status: 0.[Thread Test] osThreadGetPriority, priority: 28.[Thread Test] osThreadSuspend, status: 0.[Thread Test] osThreadResume, status: 0.[Thread Test] osThreadGetStackSize, stacksize: 2048.[Thread Test] osThreadGetStackSpace, stackspace: 1144.[Thread Test] osThreadGetCount, count: 12.[Thread Test] threadTest, count: 2.   <-testThread log[Thread Test] threadTest, count: 3.   <-testThread log[Thread Test] threadTest, count: 4.   <-testThread log[Thread Test] threadTest, count: 5.   <-testThread log[Thread Test] threadTest, count: 6.   <-testThread log[Thread Test] osThreadTerminate, status: 0. Copy