/* rc Task */ /* Includes ----------------------------------------------------------------- */ #include "task/user_task.h" /* USER INCLUDE BEGIN */ #include "device/dr16.h" /* USER INCLUDE END */ /* Private typedef ---------------------------------------------------------- */ /* Private define ----------------------------------------------------------- */ /* Private macro ------------------------------------------------------------ */ /* Private variables -------------------------------------------------------- */ /* USER STRUCT BEGIN */ /* STM32H7: 整个DR16结构体放在DMA可访问的SRAM区域 */ static DR16_t dr16 __attribute__((section(".dma_buffer"))) __attribute__((aligned(32))); /* USER STRUCT END */ /* Private function --------------------------------------------------------- */ /* Exported functions ------------------------------------------------------- */ void Task_rc(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() / RC_FREQ; osDelay(RC_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 */ /* 初始化DR16遥控器 */ DR16_Init(&dr16); /* USER CODE INIT END */ while (1) { tick += delay_tick; /* 计算下一个唤醒时刻 */ /* USER CODE BEGIN */ /* 启动DMA接收 */ DR16_StartDmaRecv(&dr16); /* 等待DMA接收完成,超时时间20ms */ if (DR16_WaitDmaCplt(20)) { /* DMA接收成功,解析数据 */ DR16_ParseData(&dr16); } else { /* DMA接收超时,标记离线 */ DR16_Offline(&dr16); } /* USER CODE END */ osDelayUntil(tick); /* 运行结束,等待下一次唤醒 */ } }