mbox_simple.c 2.9 KB

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  1. /*
  2. * 程序清单:邮箱例程
  3. *
  4. * 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,
  5. * 一个线程往邮箱中收取邮件。
  6. */
  7. #include <rtthread.h>
  8. #include "tc_comm.h"
  9. /* 指向线程控制块的指针 */
  10. static rt_thread_t tid1 = RT_NULL;
  11. static rt_thread_t tid2 = RT_NULL;
  12. /* 邮箱控制块 */
  13. static struct rt_mailbox mb;
  14. /* 用于放邮件的内存池 */
  15. static char mb_pool[128];
  16. static char mb_str1[] = "I'm a mail!";
  17. static char mb_str2[] = "this is another mail!";
  18. /* 线程1入口 */
  19. static void thread1_entry(void* parameter)
  20. {
  21. unsigned char* str;
  22. while (1)
  23. {
  24. rt_kprintf("thread1: try to recv a mail\n");
  25. /* 从邮箱中收取邮件 */
  26. if (rt_mb_recv(&mb, (rt_uint32_t*)&str, RT_WAITING_FOREVER) == RT_EOK)
  27. {
  28. rt_kprintf("thread1: get a mail from mailbox, the content:%s\n", str);
  29. /* 延时10个OS Tick */
  30. rt_thread_delay(10);
  31. }
  32. }
  33. }
  34. /* 线程2入口 */
  35. static void thread2_entry(void* parameter)
  36. {
  37. rt_uint8_t count;
  38. count = 0;
  39. while (1)
  40. {
  41. count ++;
  42. if (count & 0x1)
  43. {
  44. /* 发送mb_str1地址到邮箱中 */
  45. rt_mb_send(&mb, (rt_uint32_t)&mb_str1[0]);
  46. }
  47. else
  48. {
  49. /* 发送mb_str2地址到邮箱中 */
  50. rt_mb_send(&mb, (rt_uint32_t)&mb_str2[0]);
  51. }
  52. /* 延时20个OS Tick */
  53. rt_thread_delay(20);
  54. }
  55. }
  56. int mbox_simple_init()
  57. {
  58. /* 初始化一个mailbox */
  59. rt_mb_init(&mb, "mbt", &mb_pool[0], 128 / 4, RT_IPC_FLAG_FIFO);
  60. /* 创建线程1 */
  61. tid1 = rt_thread_create("t1",
  62. thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
  63. THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
  64. if (tid1 != RT_NULL)
  65. rt_thread_startup(tid1);
  66. else
  67. tc_stat(TC_STAT_END | TC_STAT_FAILED);
  68. /* 创建线程2 */
  69. tid2 = rt_thread_create("t2",
  70. thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
  71. THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
  72. if (tid2 != RT_NULL)
  73. rt_thread_startup(tid2);
  74. else
  75. tc_stat(TC_STAT_END | TC_STAT_FAILED);
  76. return 0;
  77. }
  78. #ifdef RT_USING_TC
  79. static void _tc_cleanup()
  80. {
  81. /* 调度器上锁,上锁后,将不再切换到其他线程,仅响应中断 */
  82. rt_enter_critical();
  83. /* 删除线程 */
  84. if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
  85. rt_thread_delete(tid1);
  86. if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
  87. rt_thread_delete(tid2);
  88. /* 执行邮箱对象脱离 */
  89. rt_mb_detach(&mb);
  90. /* 调度器解锁 */
  91. rt_exit_critical();
  92. /* 设置TestCase状态 */
  93. tc_done(TC_STAT_PASSED);
  94. }
  95. int _tc_mbox_simple()
  96. {
  97. /* 设置TestCase清理回调函数 */
  98. tc_cleanup(_tc_cleanup);
  99. mbox_simple_init();
  100. /* 返回TestCase运行的最长时间 */
  101. return 100;
  102. }
  103. /* 输出函数命令到finsh shell中 */
  104. FINSH_FUNCTION_EXPORT(_tc_mbox_simple, a simple mailbox example);
  105. #else
  106. /* 用户应用入口 */
  107. int rt_application_init()
  108. {
  109. mbox_simple_init();
  110. return 0;
  111. }
  112. #endif