OpenHarmony智能开发套件—内核编程（上）

#include <stdio.h>
#include "ohos_init.h"

void hello(void){
    printf("Hello,OpenHarmony!");
}

SYS_RUN(hello);

sudo apt install mlocate

sudo updatedb

locate ohos_init.h

static_library("sayHello"){
    sources = [
        "hello.c"
    ]
    include_dirs = [
        "//commonlibrary/utils_lite/include"
    ]
}

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;

osThreadId_t osThreadNew (osThreadFunc_t func, void *argument, const osThreadAttr_t *attr);

osStatus_t osThreadTerminate (osThreadId_t thread_id);

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;

#include <stdio.h>
#include "ohos_init.h"
// CMSIS
#include "cmsis_os2.h"
// POSIX
#include <unistd.h>

// 线程回调函数
void printThread(void *args){
    (void)args;
    while(1){
        printf("Hello,OpenHarmony!\r\n");
        // 休眠0.1秒
        osDelay(10);
    }
}

void threadTest(void){
    // 创建线程
    osThreadAttr_t attr;
    attr.name = "mainThread";
    // 线程
    attr.cb_mem = NULL;
    attr.cb_size = 0U;
    attr.stack_mem = NULL;
    attr.stack_size = 1024;
    attr.priority = osPriorityNormal;

    // 将线程启动
    osThreadId_t tid = osThreadNew((osThreadFunc_t)printThread, NULL, &attr);
    if(tid == NULL){
        printf("[Thread Test] Failed to create printThread!\r\n");
    }

    // 休眠5秒
    osDelay(500);
    // 终止线程
    osStatus_t status = osThreadTerminate(tid);
    printf("[Thread Test] printThread stop, status = %d.\r\n", status);

}

APP_FEATURE_INIT(threadTest);

static_library("thread_demo"){
    sources = [
        "singleThread.c"
    ]
    include_dirs = [
        "//commonlibrary/utils_lite/include",
        "//device/soc/hisilicon/hi3861v100/hi3861_adapter/kal/cmsis"
    ]
}

osThreadId_t newThread(char *name, osThreadFunc_t func, void *arg){
    // 定义线程和属性
    osThreadAttr_t attr = {
        name, 0, NULL, 0, NULL, 1024, osPriorityNormal, 0, 0
    };
    // 创建线程
    osThreadId_t tid = osThreadNew(func, arg, &attr);
    if(tid == NULL){
        printf("[newThread] osThreadNew(%s) failed.\r\n", name);
    }
    return tid;
}

osTimerId_t osTimerNew (osTimerFunc_t func, osTimerType_t type, void *argument, const osTimerAttr_t *attr);

typedef enum {
  /** One-shot timer */
  osTimerOnce               = 0,
  /** Repeating timer */
  osTimerPeriodic           = 1
} osTimerType_t;

osStatus_t osTimerStart (osTimerId_t timer_id, uint32_t ticks);

osStatus_t osTimerStop (osTimerId_t timer_id);

osStatus_t osTimerDelete (osTimerId_t timer_id);

#include <stdio.h>
#include "ohos_init.h"
// CMSIS
#include "cmsis_os2.h"
// POSIX
#include <unistd.h>

// 为操作软件的时间
static int times = 0;

// 软件定时器回调函数
void timerFunction(void){
    times++;
    printf("[Timer Test] Timer is Running, times = %d.\r\n", times);
}

// 主函数
void timerMain(void){
    // 创建软件定时器
    osTimerId_t tid = osTimerNew(timerFunction, osTimerPeriodic, NULL, NULL);
    if(tid == NULL){
        printf("[Timer Test] Failed to create a timer!\r\n");
        return;
    } else {
        printf("[Timer Test] Create a timer success!\r\n");
    }
    // 启动软件定时器，每1秒执行一次回调函数
    osStatus_t status = osTimerStart(tid, 100);

    // 当超过三个周期位操作软件时，关闭软件
    while(times <= 3){
        osDelay(100);
    }
    // 停止软件定时器
    status = osTimerStop(tid);
    // 删除软件定时器
    status = osTimerDelete(tid);
    printf("[Timer Test] Time Out!\r\n");
}

void TimerTest(void){
    // 创建测试线程
    osThreadAttr_t attr;
    attr.name = "timerMain";
    attr.attr_bits = 0U;
    attr.cb_mem = NULL;
    attr.cb_size = 0U;
    attr.stack_mem = NULL;
    attr.stack_size = 0U;
    attr.priority = osPriorityNormal;
    
    // 启动测试线程
    osThreadId_t tid = osThreadNew((osThreadFunc_t)timerMain, NULL, &attr);
    if(tid == NULL){
        printf("[Timer Test] Failed to created timerMain!\r\n");
    }
}

APP_FEATURE_INIT(TimerTest);

static_library("timer_demo"){
    sources = [
        "timer.c"
    ]
    include_dirs = [
        "//commonlibrary/utils_lite/include",
        "//device/soc/hisilicon/hi3861v100/hi3861_adapter/kal/cmsis"
    ]
}