整理新建Day,一些示例

Day1/mailbox_sample.c

@@ -0,0 +1,117 @@
+/*
+ * 程序清单：邮箱例程
+ *
+ * 这个程序会创建2个动态线程，一个静态的邮箱对象，其中一个线程往邮箱中发送邮件，
+ * 一个线程往邮箱中收取邮件。
+ */
+#include <rtthread.h>
+
+#define THREAD_PRIORITY      10
+#define THREAD_TIMESLICE     5
+
+/* 邮箱控制块 */
+static struct rt_mailbox mb;
+/* 用于放邮件的内存池 */
+static char mb_pool[128];
+static char mb_str1[] = "I'm a mail!";
+static char mb_str2[] = "this is another mail!";
+static char mb_str3[] = "over";
+
+static char thread1_stack[1024];
+static struct rt_thread thread1;
+
+/* 线程1入口 */
+static void thread1_entry(void *parameter)
+{
+    char *str;
+
+    while (1)
+    {
+        rt_kprintf("thread1: try to recv a mail\n");
+
+        /* 从邮箱中收取邮件 */
+        if (rt_mb_recv(&mb, (rt_ubase_t *)&str, RT_WAITING_FOREVER) == RT_EOK)
+        {
+            rt_kprintf("thread1: get a mail from mailbox, the content:%s\n", str);
+            if (str == mb_str3)
+                break;
+
+            /* 延时100ms */
+            rt_thread_mdelay(100);
+        }
+    }
+    /* 执行邮箱对象脱离 */
+    rt_mb_detach(&mb);
+}
+
+static char thread2_stack[1024];
+static struct rt_thread thread2;
+
+/* 线程2入口 */
+static void thread2_entry(void *parameter)
+{
+    rt_uint8_t count;
+
+    count = 0;  // 初始化计数器为0
+    while (count < 10)  // 循环10次
+    {
+        count ++;  // 计数器递增
+        if (count & 0x1)  // 判断计数器是否为奇数  
+        {
+            /* 发送mb_str1地址到邮箱中 */
+            rt_mb_send(&mb, (rt_uint32_t)&mb_str1);
+        }
+        else  // 否则，即计数器为偶数
+        {
+            /* 发送mb_str2地址到邮箱中 */
+            rt_mb_send(&mb, (rt_uint32_t)&mb_str2);
+        }
+
+        /* 延时200ms */
+        rt_thread_mdelay(200);
+    }
+
+    /* 发送邮件告诉线程1，线程2已经运行结束 */
+    rt_mb_send(&mb, (rt_uint32_t)&mb_str3);
+}
+
+int mailbox_sample(void)
+{
+    rt_err_t result;
+
+    /* 初始化一个mailbox */
+    result = rt_mb_init(&mb,
+                        "mbt",                      /* 名称是mbt */
+                        &mb_pool[0],                /* 邮箱用到的内存池是mb_pool */
+                        sizeof(mb_pool) / sizeof(rt_ubase_t), /* 邮箱中的邮件数目,sizeof(rt_ubase_t)表示指针大小 */
+                        RT_IPC_FLAG_PRIO);          /* 采用PRIO方式进行线程等待 */
+    if (result != RT_EOK)
+    {
+        rt_kprintf("init mailbox failed.\n");
+        return -1;
+    }
+
+    rt_thread_init(&thread1,
+                   "thread1",
+                   thread1_entry,
+                   RT_NULL,
+                   &thread1_stack[0],
+                   sizeof(thread1_stack),
+                   THREAD_PRIORITY, THREAD_TIMESLICE);
+
+    rt_thread_startup(&thread1);
+
+    rt_thread_init(&thread2,
+                   "thread2",
+                   thread2_entry,
+                   RT_NULL,
+                   &thread2_stack[0],
+                   sizeof(thread2_stack),
+                   THREAD_PRIORITY, THREAD_TIMESLICE);
+
+    rt_thread_startup(&thread2);
+    return 0;
+}
+
+/* 导出到 msh 命令列表中 */
+MSH_CMD_EXPORT(mailbox_sample, mailbox sample);

Day1/msgq_sample.c

@@ -0,0 +1,140 @@
+/*
+ * 程序清单：消息队列例程
+ *
+ * 这个程序会创建2个动态线程，一个线程会从消息队列中收取消息；一个线程会定时给消
+ * 息队列发送 普通消息和紧急消息。
+ */
+#include <rtthread.h>
+
+#define THREAD_PRIORITY      25
+#define THREAD_TIMESLICE     5
+
+/* 消息队列控制块 */
+static struct rt_messagequeue mq;
+/* 消息队列中用到的放置消息的内存池 */
+static rt_uint8_t msg_pool[2048];
+
+static char thread1_stack[1024];
+static struct rt_thread thread1;
+
+/* 线程1入口函数 */
+static void thread1_entry(void *parameter)
+{
+    char buf = 0;  // 用于接收消息的缓冲区
+    rt_uint8_t cnt = 0;  // 消息计数器
+
+    while (1)
+    {
+        /* 从消息队列中接收消息 */
+        if (rt_mq_recv(&mq, &buf, sizeof(buf), RT_WAITING_FOREVER) > 0)
+        {
+            rt_kprintf("thread1: recv msg from msg queue, the content: %c\n", buf);
+            if (cnt == 19)
+            {
+                break;  // 接收20次消息后退出
+            }
+        }
+        /* 延时50ms */
+        cnt++;
+        rt_thread_mdelay(50);
+    }
+    rt_kprintf("thread1: detach mq \n");
+    rt_mq_detach(&mq);  // 脱离消息队列
+}
+
+static char thread2_stack[1024];
+static struct rt_thread thread2;
+
+/* 线程2入口 */
+static void thread2_entry(void *parameter)
+{
+    int result;
+    char buf = 'A';  // 要发送的消息内容
+    rt_uint8_t cnt = 0;  // 消息计数器
+
+    while (1)
+    {
+        if (cnt == 8)
+        {
+            /* 发送紧急消息到消息队列中 */
+            result = rt_mq_urgent(&mq, &buf, 1);
+            if (result != RT_EOK)
+            {
+                rt_kprintf("rt_mq_urgent ERR\n");
+            }
+            else
+            {
+                rt_kprintf("thread2: send urgent message - %c\n", buf);
+            }
+        }
+        else if (cnt >= 20) /* 发送20次消息之后退出 */
+        {
+            rt_kprintf("message queue stop send, thread2 quit\n");
+            break;
+        }
+        else
+        {
+            /* 发送消息到消息队列中 */
+            result = rt_mq_send(&mq, &buf, 1);
+            if (result != RT_EOK)
+            {
+                rt_kprintf("rt_mq_send ERR\n");
+            }
+
+            rt_kprintf("thread2: send message - %c\n", buf);
+        }
+        buf++;
+        cnt++;
+        /* 延时5ms */
+        rt_thread_mdelay(5);
+    }
+}
+
+/* 消息队列示例的初始化 */
+int msgq_sample(void)
+{
+    rt_err_t result;
+
+    /* 初始化消息队列 */
+    result = rt_mq_init(&mq,
+                        "mqt",                       /* 名称是mqt */
+                        &msg_pool[0],                /* 内存池指向msg_pool */
+                        1,                           /* 每个消息的大小是1字节 */
+                        sizeof(msg_pool),            /* 内存池的大小是msg_pool的大小 */
+                        RT_IPC_FLAG_PRIO);           /* 如果有多个线程等待，按照优先级的方式分配消息 */
+
+    if (result != RT_EOK)
+    {
+        rt_kprintf("init message queue failed.\n");
+        return -1;
+    }
+
+    /* 初始化线程1 */
+    rt_thread_init(&thread1,
+                   "thread1",                       /* 线程名称 */
+                   thread1_entry,                   /* 线程入口函数 */
+                   RT_NULL,                         /* 入口函数参数 */
+                   &thread1_stack[0],               /* 线程栈起始地址 */
+                   sizeof(thread1_stack),           /* 线程栈大小 */
+                   THREAD_PRIORITY, THREAD_TIMESLICE); /* 线程优先级和时间片大小 */
+
+    /* 启动线程1 */
+    rt_thread_startup(&thread1);
+
+    /* 初始化线程2 */
+    rt_thread_init(&thread2,
+                   "thread2",                       /* 线程名称 */
+                   thread2_entry,                   /* 线程入口函数 */
+                   RT_NULL,                         /* 入口函数参数 */
+                   &thread2_stack[0],               /* 线程栈起始地址 */
+                   sizeof(thread2_stack),           /* 线程栈大小 */
+                   THREAD_PRIORITY-1, THREAD_TIMESLICE); /* 线程优先级和时间片大小 */
+
+    /* 启动线程2 */
+    rt_thread_startup(&thread2);
+
+    return 0;
+}
+
+/* 导出到 msh 命令列表中 */
+MSH_CMD_EXPORT(msgq_sample, msgq sample);

Day1/mutex_sample.c

@@ -0,0 +1,94 @@
+/*
+ * 程序清单：互斥锁例程
+ *
+ * 互斥锁是一种保护共享资源的方法。当一个线程拥有互斥锁的时候，
+ * 可以保护共享资源不被其他线程破坏。线程1对2个number分别进行加1操作
+ * 线程2也会对2个number分别进行加1操作。使用互斥量保证2个number值保持一致
+ */
+#include <rtthread.h>
+
+#define THREAD_PRIORITY         8
+#define THREAD_TIMESLICE        5
+
+/* 指向互斥量的指针 */
+static rt_mutex_t dynamic_mutex = RT_NULL;
+static rt_uint8_t number1, number2 = 0;
+
+
+static char thread1_stack[1024];
+static struct rt_thread thread1;
+static void rt_thread_entry1(void *parameter)
+{
+    while (1)
+    {
+        /* 线程1获取到互斥量后，先后对number1、number2进行加1操作，然后释放互斥量 */
+        rt_mutex_take(dynamic_mutex, RT_WAITING_FOREVER);
+        number1++;
+        rt_thread_mdelay(10);
+        number2++;
+        rt_mutex_release(dynamic_mutex);
+    }
+}
+
+
+static char thread2_stack[1024];
+static struct rt_thread thread2;
+static void rt_thread_entry2(void *parameter)
+{
+    while (1)
+    {
+        /* 线程2获取到互斥量后，检查number1、number2的值是否相同，相同则表示mutex起到了锁的作用 */
+        rt_mutex_take(dynamic_mutex, RT_WAITING_FOREVER);
+        if (number1 != number2)
+        {
+            rt_kprintf("not protect.number1 = %d, mumber2 = %d \n", number1, number2);
+        }
+        else
+        {
+            rt_kprintf("mutex protect ,number1 = mumber2 is %d\n", number1);
+        }
+
+        number1++;
+        number2++;
+        rt_mutex_release(dynamic_mutex);
+
+        if (number1 >= 50)
+            return;
+    }
+}
+
+/* 互斥量示例的初始化 */
+int mutex_sample(void)
+{
+    /* 创建一个动态互斥量 */
+    dynamic_mutex = rt_mutex_create("dmutex", RT_IPC_FLAG_PRIO);
+    if (dynamic_mutex == RT_NULL)
+    {
+        rt_kprintf("create dynamic mutex failed.\n");
+        return -1;
+    }
+
+    rt_thread_init(&thread1,
+                   "thread1",
+                   rt_thread_entry1,
+                   RT_NULL,
+                   &thread1_stack[0],
+                   sizeof(thread1_stack),
+                   THREAD_PRIORITY, THREAD_TIMESLICE);
+
+    rt_thread_startup(&thread1);
+
+    rt_thread_init(&thread2,
+                   "thread2",
+                   rt_thread_entry2,
+                   RT_NULL,
+                   &thread2_stack[0],
+                   sizeof(thread2_stack),
+                   THREAD_PRIORITY - 1, THREAD_TIMESLICE);
+
+    rt_thread_startup(&thread2);
+    return 0;
+}
+
+/* 导出到 msh 命令列表中 */
+MSH_CMD_EXPORT(mutex_sample, mutex sample);

Day1/semaphore_sample.c

@@ -0,0 +1,102 @@
+#include <rtthread.h>
+
+#define THREAD_PRIORITY         25
+#define THREAD_TIMESLICE        5
+
+/* 指向信号量的指针 */
+static rt_sem_t dynamic_sem = RT_NULL;
+
+static char thread1_stack[1024];
+static struct rt_thread thread1;
+
+/* 线程1入口函数 */
+static void rt_thread1_entry(void *parameter)
+{
+    static rt_uint8_t count = 0;
+
+    while(1)
+    {
+        if(count <= 100)
+        {
+            count++;  // 计数器递增
+        }
+        else
+        {
+            return;  // 计数器大于100时退出线程
+        }
+
+        /* count 每计数 10 次，就释放一次信号量 */
+        if(0 == (count % 10))
+        {
+            rt_kprintf("t1 release a dynamic semaphore.\n");
+            rt_sem_release(dynamic_sem);  // 释放信号量
+        }
+    }
+}
+
+static char thread2_stack[1024];
+static struct rt_thread thread2;
+
+/* 线程2入口函数 */
+static void rt_thread2_entry(void *parameter)
+{
+    static rt_err_t result;
+    static rt_uint8_t number = 0;
+
+    while(1)
+    {
+        /* 永久方式等待信号量，获取到信号量，则执行 number 自加的操作 */
+        result = rt_sem_take(dynamic_sem, RT_WAITING_FOREVER);
+        if (result != RT_EOK)
+        {
+            rt_kprintf("t2 take a dynamic semaphore, failed.\n");
+            rt_sem_delete(dynamic_sem);  // 删除信号量
+            return;
+        }
+        else
+        {
+            number++;  // 信号量获取成功，number 自加
+            rt_kprintf("t2 take a dynamic semaphore. number = %d\n", number);
+        }
+    }
+}
+
+/* 信号量示例的初始化 */
+int semaphore_sample(void)
+{
+    /* 创建一个动态信号量，初始值是 0 */
+    dynamic_sem = rt_sem_create("dsem", 0, RT_IPC_FLAG_PRIO);
+    if (dynamic_sem == RT_NULL)
+    {
+        rt_kprintf("create dynamic semaphore failed.\n");
+        return -1;
+    }
+    else
+    {
+        rt_kprintf("create done. dynamic semaphore value = 0.\n");
+    }
+
+    /* 初始化并启动线程1 */
+    rt_thread_init(&thread1,
+                   "thread1",                       /* 线程名称 */
+                   rt_thread1_entry,                /* 线程入口函数 */
+                   RT_NULL,                         /* 入口函数参数 */
+                   &thread1_stack[0],               /* 线程栈起始地址 */
+                   sizeof(thread1_stack),           /* 线程栈大小 */
+                   THREAD_PRIORITY, THREAD_TIMESLICE); /* 线程优先级和时间片大小 */
+    rt_thread_startup(&thread1);
+
+    /* 初始化并启动线程2 */
+    rt_thread_init(&thread2,
+                   "thread2",                       /* 线程名称 */
+                   rt_thread2_entry,                /* 线程入口函数 */
+                   RT_NULL,                         /* 入口函数参数 */
+                   &thread2_stack[0],               /* 线程栈起始地址 */
+                   sizeof(thread2_stack),           /* 线程栈大小 */
+                   THREAD_PRIORITY-1, THREAD_TIMESLICE); /* 线程优先级和时间片大小 */
+    rt_thread_startup(&thread2);
+
+    return 0;
+}
+/* 导出到 msh 命令列表中 */
+MSH_CMD_EXPORT(semaphore_sample, semaphore sample);

Day1/thread_sample.c

@@ -0,0 +1,75 @@
+/*
+ * 程序清单：创建、初始化/脱离线程
+ *
+ * 这个例子会创建两个线程，一个动态线程，一个静态线程。
+ * 静态线程在运行完毕后自动被系统脱离，动态线程一直打印计数。
+ */
+#include <rtthread.h>
+
+#define THREAD_PRIORITY         25
+#define THREAD_STACK_SIZE       512
+#define THREAD_TIMESLICE        5
+
+static rt_thread_t tid1 = RT_NULL;
+
+/* 线程1的入口函数 */
+static void thread1_entry(void *parameter)
+{
+    rt_uint32_t count = 0;
+
+    while (1)
+    {
+        /* 线程1采用低优先级运行，一直打印计数值 */
+        rt_kprintf("thread1 count: %d\n", count++);
+        rt_thread_mdelay(500);  // 延时500毫秒
+    }
+}
+
+static char thread2_stack[1024];
+static struct rt_thread thread2;
+
+/* 线程2入口 */
+static void thread2_entry(void *param)
+{
+    rt_uint32_t count = 0;
+
+    /* 线程2拥有较高的优先级，以抢占线程1而获得执行 */
+    for (count = 0; count < 10 ; count++)
+    {
+        /* 线程2打印计数值 */
+        rt_kprintf("thread2 count: %d\n", count);
+    }
+    rt_kprintf("thread2 exit\n");
+
+    /* 线程2运行结束后也将自动被系统脱离 */
+}
+
+/* 线程示例 */
+int thread_sample(void)
+{
+    /* 创建线程1，名称是thread1，入口是thread1_entry */
+    tid1 = rt_thread_create("thread1",
+                            thread1_entry, RT_NULL,
+                            THREAD_STACK_SIZE,
+                            THREAD_PRIORITY, THREAD_TIMESLICE);
+    /* 如果获得线程控制块，启动这个线程 */
+    if (tid1 != RT_NULL)
+        rt_thread_startup(tid1);
+
+    /* 初始化线程2，名称是thread2，入口是thread2_entry */
+    rt_thread_init(&thread2,
+                   "thread2",
+                   thread2_entry,
+                   RT_NULL,
+                   &thread2_stack[0],
+                   sizeof(thread2_stack),
+                   THREAD_PRIORITY - 1, THREAD_TIMESLICE);
+
+    /* 启动线程2 */
+    rt_thread_startup(&thread2);
+
+    return 0;
+}
+
+/* 导出到 msh 命令列表中 */
+MSH_CMD_EXPORT(thread_sample, thread sample);

applications/main.c

@@ -16,31 +16,107 @@
 #include <rtdevice.h>
 #endif /* RT_USING_NANO */
 
-// #define GPIO_LED_B    GET_PIN(F, 11)
+#define GPIO_LED_B    GET_PIN(F, 11)
-// #define GPIO_LED_R    GET_PIN(F, 12)
+#define GPIO_LED_R    GET_PIN(F, 12)
+int main(void)
+{
+    rt_pin_mode(GPIO_LED_R, PIN_MODE_OUTPUT);
+
+    while (1)
+    {
+        rt_pin_write(GPIO_LED_R, PIN_HIGH);
+        rt_thread_mdelay(500);
+        rt_pin_write(GPIO_LED_R, PIN_LOW);
+        rt_thread_mdelay(500);
+    }
+}
+
+// #include <rtthread.h>
+// #include "hello.h"
+
 // int main(void) 
 // {
-//     rt_pin_mode(GPIO_LED_R, PIN_MODE_OUTPUT);
+//     while(1)
+//     {
+//         Print_Hello_World();
+//         rt_thread_mdelay(500);
+//     }
+
+//     return 0;
+// }
+
+/*
+ * 程序清单：创建、初始化/脱离线程
+ *
+ * 这个例子会创建两个线程，一个动态线程，一个静态线程。
+ * 静态线程在运行完毕后自动被系统脱离，动态线程一直打印计数。
+ */
+// #include <rtthread.h>
+
+// #define THREAD_PRIORITY         25
+// #define THREAD_STACK_SIZE       512
+// #define THREAD_TIMESLICE        5
+
+// static rt_thread_t tid1 = RT_NULL;
+
+// /* 线程1的入口函数 */
+// static void thread1_entry(void *parameter)
+// {
+//     rt_uint32_t count = 0;
 
 //     while (1)
 //     {
-//         rt_pin_write(GPIO_LED_R, PIN_HIGH);
+//         /* 线程1采用低优先级运行，一直打印计数值 */
-//         rt_thread_mdelay(500);
+//         rt_kprintf("thread1 count: %d\n", count++);
-//         rt_pin_write(GPIO_LED_R, PIN_LOW);
+//         rt_thread_mdelay(500);  // 延时500毫秒
-//         rt_thread_mdelay(500);
 //     }
 // }
 
-#include <rtthread.h>
+// static char thread2_stack[1024];
-#include "hello.h"
+// static struct rt_thread thread2;
 
-int main(void) 
+// /* 线程2入口 */
-{
+// static void thread2_entry(void *param)
-    while(1)
+// {
-    {
+//     rt_uint32_t count = 0;
-        Print_Hello_World();
-        rt_thread_mdelay(10000);
-    }
 
-    return 0;
+//     /* 线程2拥有较高的优先级，以抢占线程1而获得执行 */
-}
+//     for (count = 0; count < 10 ; count++)
+//     {
+//         /* 线程2打印计数值 */
+//         rt_kprintf("thread2 count: %d\n", count);
+//     }
+//     rt_kprintf("thread2 exit\n");
+
+//     /* 线程2运行结束后也将自动被系统脱离 */
+// }
+
+// /* 线程示例 */
+// int thread_sample(void)
+// {
+//     /* 创建线程1，名称是thread1，入口是thread1_entry */
+//     tid1 = rt_thread_create("thread1",
+//                             thread1_entry, RT_NULL,
+//                             THREAD_STACK_SIZE,
+//                             THREAD_PRIORITY, THREAD_TIMESLICE);
+//     /* 如果获得线程控制块，启动这个线程 */
+//     if (tid1 != RT_NULL)
+//         rt_thread_startup(tid1);
+
+//     /* 初始化线程2，名称是thread2，入口是thread2_entry */
+//     rt_thread_init(&thread2,
+//                    "thread2",
+//                    thread2_entry,
+//                    RT_NULL,
+//                    &thread2_stack[0],
+//                    sizeof(thread2_stack),
+//                    THREAD_PRIORITY - 1, THREAD_TIMESLICE);
+
+//     /* 启动线程2 */
+//     rt_thread_startup(&thread2);
+
+//     return 0;
+// }
+
+// /* 导出到 msh 命令列表中 */
+// MSH_CMD_EXPORT(thread_sample, thread sample);