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AM335X linux3.2出现串口控制台打印乱七八糟的字符

各位大侠:

大家好,我在自制的AM335X板子上运行linux3.2,该板子用AM3354 cpu,基于SDK6.0,uboot为2013版,linux kernel版本为3.2.0

但是出现一个奇怪的现象,系统起起来之后,如果此时拔掉调试串口线,再插上,一定几率会出现串口打印乱七八糟的字符(不是乱码),但通过telnet连接没有该现象.打印的字符我复制一些.通过 secureCRT显示如下:

root@am335x-evm:~# _o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{_o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w_o]omokm{wowo_o]_}{w_o}{_o]omokm{wowo_o]_}{w_w_o]omokm{wowo_o]_}{w_o_}{w_o]omokm{wowo_o]_}{w_o}{_o]omokm{wowo_o]_}{w_w_o]omokm{wowo_o]_}{w_o_o]{oow}m_}{w_o]omokm{wowo_o]_}{w_o_o{oo}m}{w—–_o]omokm{wowo_o]_}{w_o_o{oo}w_o]omokm{wowo_o]_}{w_o_o{oo}mk_}{w_o]omokm{wowo_o]_}{w_o_o}{_o]omokm{wowo_o]_}{w_o_w_o]omokm{wowo_o]_}{w_o_owm_o]omokm{wowo_o]_}{w_}{w_}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w}{_o]omokm{wowo_ow_o]omokm{wowo_o]_}{]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{w}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{k}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{{}w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{k}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{{}w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{_o]]omokm{wowo_o]_}{w_o_mokm{wowo_o]_}{w{oow}m}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{__o]omokm{wowo_o]_}{{oo}m}}{w_o]omokm{wowo_o]_}{{oo}m}w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wow_o]_}{w}{_o]omokm{wowo_o]_o_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{__o]omokm{wowo_o]{{oo}mk}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{__o]omokm{wowo_o]_}{}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}_o]omokm{wowo_o]_}{}w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o_}{w}{_o]omokm{wowo_o]_}{wm_o]omokm{wowo_o]_}{w_o]_}{w}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{__o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}_o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w}w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o_}{w}{_o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w_o]omokm{wowo_o]_}{w_o}{w}}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{__o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w_o]omokm{wowo_o]_}{w_o}{k}_o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w_o]omokm{wowo_o]_}{w_o}{}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}_o]omokm{wowo_o]_]_}{w}{_o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{wkm{wowo_o]_}{w_}{w_o]omokm{wowo_om{wowo_o]okm{wowo_o]_}{w_o}{{}}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omo]_}{w_}{w_o]omokm{wowo_o]_}{w}{__o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w_o]omokm{wowo_o]_}{w_o}{k}_o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w_o]omokm{wowo_o]_}{w_o}{}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}_o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w_o]omokm{wowo_o]_}{w_o}{}w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{_o]omokm{wowo_o]_}{w_o]omokm{wowo_o]_}{w_o]_}{w_o]omokm{wowo_o]_}{w_o}{{_o]omokm{wowo_o]_}{w_o{oow}m}}}{w_o]omokm{wowo_o]_}{w_o_ow_o]omokm{wowo_o]_}{w_}{w_o]omokm{wowo_o]_}{w}{_o]omokm{w}}}}}{ww}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}{w_o]omokm{wowo_ow_o]omokm{wowo_o]_}{w_o_o{{w_{oo}mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

有没有碰到这种情况的兄弟,不吝赐教,在此表示感激

昨夜无眠:

而且是不停的打印,一直往外吐字符.

昨夜无眠:

回复 昨夜无眠:

并且过很久以后,又会恢复正常,有可能1小时后,或者半小时后.

Shine:

回复 昨夜无眠:

请问是通过usb转uart的吗?看一下usb转uart芯片是否支持带电热插拔。

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