信号量同步实验是在RT-Thread中创建了两个线程,一个是获取信号量线程,一个是释放互斥量线程,两个线程独立运行, 获取信号量线程是一直在等待信号量,其等待时间是RT_WAITING_FOREVER,等到获取到信号量之后,线程处理完毕时它又马上释放信号量。 释放互斥量线程利用延时模拟占用信号量,延时的这段时间,获取线程无法获得信...
/永久方式等待信号量,获取到信号量,则执行 LED电平翻转的操作/ 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); return; } else { rt_thread_mdelay(20);/延时20ms/ falling...
一天的好心情就从这首歌开始吧”||《stupid i miss u》 02:22 “听完这首歌好像又恋爱了一次”||《One For You》 03:03 “就跟自己喜欢的人推荐这首歌吧”||《My Forever》 03:58 “难怪会觉得很热 因为总是被浪漫包围”||《feel the same》 02:13 “提前加入心动歌单吧”||《Runaway》 03:48...
49rt_sem_take(inputcap_dev->sem, RT_WAITING_FOREVER); 50if(wait_i++ >=1000) 51{ 52rt_kprintf("MotorR encoder:%d ",inputcap_dev->pulse_param.pulsewidth_us *10000/ inputcap_dev->pulse_param.pulsecycle_us); 53wait_i =0; 54} 55} 56} 57} 目前只是实现了大概1S钟打印一次...
rt_mp_alloc (&(uart->dma_tx->data_node_mp), RT_WAITING_FOREVER); if (data_node == RT_NULL) { /* set error code */ err_code = -RT_ENOMEM; } else { rt_uint32_t level; /* fill data node */ data_node->data_ptr = ptr; ...
15 result = rt_sem_take(&dynamic_sem, RT_WAITING_FOREVER); 16 if(i%2 == 0) 17 { 18 GPIOI->BSRR = GPIO_PIN_8; 19 } 20 else 21 { 22 GPIOI->BSRR = GPIO_PIN_8 << 16; 23 } 24 i++; 25 } 26} 27 28uint32_t count = 0; ...
(sem_full, RT_WAITING_FOREVER); /* 临界区,上锁进行操作 */ rt_sem_take(sem_lock, RT_WAITING_FOREVER); sum += array [get % MAXSEM]; rt_kprintf (the consumer[%d] get a number: %d\n, (get % MAXSEM), array [get % MAXSEM]); get++; rt_sem_release (sem_lock); /* 释放一...
/*使能空闲中断,打开DMA接收*/__HAL_UART_ENABLE_IT(&huart2,UART_IT_IDLE);HAL_UART_Receive_DMA(&huart2,HMI_LCD_Handler.HMI_LCD_U2_Buffer,HMI_LCD_U2_BUFFER_SIZE);while(1){/*获取LCD信号量*/result=rt_sem_take(lcd_sem,RT_WAITING_FOREVER);if(RT_EOK==result){//进行消息处理Process...
一天的好心情就从这首歌开始吧”||《stupid i miss u》 02:22 “听完这首歌好像又恋爱了一次”||《One For You》 03:03 “就跟自己喜欢的人推荐这首歌吧”||《My Forever》 03:58 “难怪会觉得很热 因为总是被浪漫包围”||《feel the same》 02:13 “提前加入心动歌单吧”||《Runaway》 03:48...