/* blink Task */ /* Includes ----------------------------------------------------------------- */ #include "task/user_task.h" /* USER INCLUDE BEGIN */ #include "device/buzzer.h" #include /* USER INCLUDE END */ /* Private typedef ---------------------------------------------------------- */ /* Private define ----------------------------------------------------------- */ /* Private macro ------------------------------------------------------------ */ /* Private variables -------------------------------------------------------- */ /* USER STRUCT BEGIN */ BUZZER_t buzzer; static uint16_t count; /* USER STRUCT END */ /* Private function --------------------------------------------------------- */ /* Exported functions ------------------------------------------------------- */ void Task_blink(void *argument) { (void)argument; /* 未使用argument,消除警告 */ /* 计算任务运行到指定频率需要等待的tick数 */ const uint32_t delay_tick = osKernelGetTickFreq() / BLINK_FREQ; osDelay(BLINK_INIT_DELAY); /* 延时一段时间再开启任务 */ uint32_t tick = osKernelGetTickCount(); /* 控制任务运行频率的计时 */ /* USER CODE INIT BEGIN */ /* 播放启动音乐 */ BUZZER_Init(&buzzer, BSP_PWM_BUZZER); BUZZER_PlayMusic(&buzzer, MUSIC_RM); /* USER CODE INIT END */ while (1) { tick += delay_tick; /* 计算下一个唤醒时刻 */ /* USER CODE BEGIN */ count++; uint16_t phase = count % 1000; if (phase == 0) { /* 每秒开始播放C4音符 */ BUZZER_Set(&buzzer, 261.63f, 0.5f); // C4音符频率约261.63Hz BUZZER_Start(&buzzer); } else if (phase == 50) { /* 播放100ms后停止 (50/500Hz = 0.1s) */ BUZZER_Stop(&buzzer); } /* USER CODE END */ osDelayUntil(tick); /* 运行结束,等待下一次唤醒 */ } }