ModbusRTU协议栈漏发送最后一个字节

发布于 2017-09-27 16:56:25 浏览：2820 订阅该版

线程代码：
```static void rt_thread_entry3(void* parameter)
{
	eMBErrorCode err;
	err = eMBInit(MB_RTU, 0x01, 1,115200, MB_PAR_NONE );
	if(MB_ENOERR != err){
		rt_kprintf("eMBInit fail...
");
		goto suspend;
	}
	eMBEnable();
    while (1)
    {
		err = eMBPoll();
		if(MB_ENOERR != err){
			rt_kprintf("eMBPoll states error...
");
			goto suspend;
		}
    }
suspend:
	rt_thread_suspend(rt_thread_self());
}
```

```finsh/>:
  | /
- RT -     Thread Operating System
 / |      2.1.0 build Sep 27 2017
 2006 - 2016 Copyright by rt-thread team
	0, 0x00000000
finsh >list_thread()
 thread  pri  status      sp     stack size max used   left tick  error
-------- ---- ------- ---------- ---------- ---------- ---------- ---
tshell   0x14 ready   0x0000008c 0x00000800 0x000001b0 0x00000005 000
slave trans 0x0a suspend 0x000000a8 0x00000200 0x000000a8 0x00000005 000
tidle    0x1f ready   0x00000058 0x00000400 0x00000058 0x0000000f 000
mb       0x05 suspend 0x000000c0 0x00000400 0x00000124 0x00000003 000
op       0x0b suspend 0x00000088 0x00000400 0x0000014c 0x00000005 000
led      0x19 suspend 0x00000078 0x00000100 0x00000078 0x00000005 000
	0, 0x00000000
finsh >list_timer()
timer    periodic   timeout    flag
-------- ---------- ---------- -----------
tshell   0x00000000 0x00000000 deactivated
slave timer 0x00000001 0x00000002 deactivated
slave trans 0x00000000 0x00000000 deactivated
tidle    0x00000000 0x00000000 deactivated
mb       0x00000000 0x00000000 deactivated
op       0x00000032 0x000a8658 activated
led      0x000000fa 0x000a865b activated
current tick:0x000a865b
	0, 0x00000000
finsh >list_device()
device   type                 ref count
-------- -------------------- ----------
tm16xx   Character Device     0       
timer0   Timer Device         0       
spi30    SPI Device           0       
spi3     SPI Bus              0       
spi10    SPI Device           0       
spi1     SPI Bus              0       
pin      Miscellaneous Device 0       
uart1    Character Device     2       
	0, 0x00000000
finsh >list_mutex()
mutex    owner    hold suspend thread
-------- -------- ---- --------------
spi10    (NULL)   0000 0
spi3     (NULL)   0000 0
spi1     (NULL)   0000 0
	0, 0x00000000
finsh >list_event()
event    set        suspend thread
-------- ---------- --------------
slave event  0x00000000 001:mb
slave event  0x00000000 001:slave trans
	0, 0x00000000
finsh >```

运行结果：
```000252-Tx:01 03 00 00 00 01 84 0A
000253-Rx:01 03 00 00 00 01 84
000254-Tx:01 03 00 00 00 01 84 0A
000255-Rx:01 03 00 00 00 01 84
000256-Tx:01 03 00 00 00 01 84 0A
000257-Rx:01 03 00 00 00 01 84
000258-Tx:01 03 00 00 00 01 84 0A
000259-Rx:01 03 00 00 00 01 84
000260-Tx:01 03 00 00 00 01 84 0A
000261-Rx:01 03 00 00 00 01 84```

一些疑问：
是否跟使用UART1做为CONSOLE有关？
只有一个外端子RS232接口，有没有好方法用一个接口，实现多种功能，且不互相干扰呢？