Mini2440平台下RT-Thread Demo中DM9000驱动问题

发布于 2011-08-11 22:38:54 浏览：5734 订阅该版

基于Mini2440平台，使用MDK编译出rtthread-mini2440.afx, 然后以MDK+JLink将rtthread-mini2440.afx下载到Mini2440 SDRAM中以Debug方式运行，从串口中经常会打印出下面的信息

```
 \ | /
- RT -     Thread Operating System
 / | \ 0.4.0 build Aug 11 2011
 2006 - 2011 Copyright by rt-thread team
Initialize fail
No Card assertion
sdcard init failed
finsh />File System initialzation failed!
Device File System initialized!
dm9000 id: 0x90000a46
operating at 100M half duplex mode
TCP/IP initialized!
 \ | /
- RT -     Thread Operating System
 / | \ 0.4.0 build Aug 11 2011
 2006 - 2011 Copyright by rt-thread team
Initialize fail
No Card assertion
sdcard init failed
finsh />File System initialzation failed!
Device File System initialized!
dm9000 id: 0x0
To initialize device:e0 failed. The error code is -1
TCP/IP initialized!

\ | /
- RT -     Thread Operating System
 / | \ 0.4.0 build Aug 11 2011
 2006 - 2011 Copyright by rt-thread team
Initialize fail
No Card assertion
sdcard init failed
finsh />File System initialzation failed!
Device File System initialized!
dm9000 id: 0x90000a46
could not establish link
TCP/IP initialized!
```
从串口打印出来的信息来看，DM9000的初始化代码有BUG！可以确认MINI2440上的DM9000
芯片是OK的，在MINI2440上运行Linux，网口一直都是很正常的。请问有人碰到这个问题吗？
如何解决呢！我用DNW工具将rtthread-mini2440.bin下载到MINI2440的SDRAM运行也会出现
相同的问题。