stm32f串口接收数据不全

发布于 2014-08-26 14:14:26 浏览：2660 订阅该版

串口2中断代码
```void USART2_IRQHandler(void)
{
    struct stm32_uart* uart;

uart = &uart2;

/* enter interrupt */
    rt_interrupt_enter();
    if(USART_GetITStatus(uart->uart_device, USART_IT_RXNE) != RESET)
    {
        //rt_hw_serial_isr(&serial2);//屏蔽官方的中断处理程序
        RT_ASSERT(serial2.parent.flag & RT_DEVICE_FLAG_INT_RX);
		int ch=-1;

while (1)
    	{
	       	ch = serial2.ops->getc(&serial2);
	       	if (ch == -1)
	    		break;
	
	        if(server_rec_buf.pHead != ((server_rec_buf.pTail+1)%PROTOCOL_BUF_SIZE))//如果队列没满
	        {
		   		server_rec_buf.data[server_rec_buf.pTail] = ch;
				rt_kprintf("pTail = %d , ch = %02x
",server_rec_buf.pTail,ch);
		    	server_rec_buf.pTail=(server_rec_buf.pTail+1)%PROTOCOL_BUF_SIZE;
		    }
		    else
			{
		    	rt_kprintf("server_rec_buf队列满
");
		    }
        	//serial_ringbuffer_putc(serial->int_rx, ch);
        }
       
        /* clear interrupt */

USART_ClearITPendingBit(uart->uart_device, USART_IT_RXNE);
    
	}
    if (USART_GetITStatus(uart->uart_device, USART_IT_TC) != RESET)
    {
        /* clear interrupt */
        USART_ClearITPendingBit(uart->uart_device, USART_IT_TC);
    }

/* leave interrupt */
    rt_interrupt_leave();
}```
pc端发送16进制0f0b000b004942010000020304000000结果只收到0f0b，不知道为啥？