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zollee
Senior Member
Joined: 19 May 2009
Posts: 59
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 Posted: Sat Oct 31, 2009 3:48 am Post subject: 如何启动第二个串口 |
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我的开发板有两个串口，第一个串口已经可用，如何启用第二个呢
buildfile文件如下：
display_msg Starting serial driver...
# For ADS5121e HW Rev 2D and higher:
devc-sermpc512x -c 66000000 -b 115200 -p 3 -e -F -S -x 40
waitfor /dev/ser1 4
reopen /dev/ser1
slogger &
pipe
现在dev下只有ser1，如何出现ser2呢 |
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zollee
Senior Member
Joined: 19 May 2009
Posts: 59
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| Posted: Wed Nov 04, 2009 9:29 am Post subject: |
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| 这个问题大家应该都遇到过吧？怎么没人回答呢？？ |
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xtang
Moderator
Joined: 11 Sep 2003
Posts: 1666
Location: China
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| Posted: Wed Nov 04, 2009 8:26 pm Post subject: |
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| zollee wrote: | | 这个问题大家应该都遇到过吧？怎么没人回答呢？？ |
在5121e标准BSP里提供的Build文件里，是这样写的：
display_msg Starting serial driver...
# For ADS5121e HW Rev 2D and higher:
devc-sermpc512x -c 66000000 -b 115200 -p 3 -e -F -S -x 40
# For ADS5121e HW Rev 2:
# devc-sermpc512x -c 99000000 -b 115200 -p 3 -e -F -S -x 40 |
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zollee
Senior Member
Joined: 19 May 2009
Posts: 59
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| Posted: Thu Nov 05, 2009 2:40 am Post subject: |
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to xtang:
For ADS5121e HW Rev 2是什么意思呢，是第二个串口吗？
但是我使用
devc-sermpc512x -c 99000000 -b 115200 -p 3 -e -F -S -x 40
发现超级终端输入命令后控制台没反应，偶尔会收到几个看不懂的字符。
然后我同时使用
devc-sermpc512x -c 66000000 -b 115200 -p 3 -e -F -S -x 40
devc-sermpc512x -c 99000000 -b 115200 -p 3 -e -F -S -x 40
现象也一样。 |
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xtang
Moderator
Joined: 11 Sep 2003
Posts: 1666
Location: China
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| Posted: Thu Nov 05, 2009 5:34 pm Post subject: |
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| zollee wrote: | to xtang:
For ADS5121e HW Rev 2是什么意思呢，是第二个串口吗？ |
是开发板的 Revision 吧。 |
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zollee
Senior Member
Joined: 19 May 2009
Posts: 59
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| Posted: Fri Nov 06, 2009 3:22 am Post subject: |
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| 那样的话就跟第二个串口没关系了，现在还是不知道该如何使用第二个串口，哪位大侠知道啊 |
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xtang
Moderator
Joined: 11 Sep 2003
Posts: 1666
Location: China
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| Posted: Fri Nov 06, 2009 4:11 pm Post subject: |
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| zollee wrote: | | 那样的话就跟第二个串口没关系了，现在还是不知道该如何使用第二个串口，哪位大侠知道啊 |
对不起，你说的对，是我糊涂了。那个是不同板子上的串口启动方法。
你看看devc-sermpc512x的命令行参数说明，看看是不是通过设不同的命令行参数可以找到第二个串口。 |
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comquter
Moderator
Joined: 17 Sep 2003
Posts: 252
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| Posted: Fri Nov 06, 2009 8:25 pm Post subject: |
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-p 指定PSC 端口, -u指定unit number.
例
devc-sermpc512x -c 66000000 -b 115200 -p6 -e -F -S -x40 -u2 |
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zollee
Senior Member
Joined: 19 May 2009
Posts: 59
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| Posted: Sat Nov 07, 2009 8:09 am Post subject: |
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| 感谢Xtang 和 computer 的回复，应该是参数传的不对，但是我查了板子相关资料，没有找到参数的详细描述，不知道第二个串口psc是多少 |
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