关于SPI flash的elm文件系统

发布于 2013-07-26 17:50:28 浏览：9206 订阅该版

最近在调试spi flash的elm文件系统，发现一些问题；
1、rtthread系统用的是1.2.0beta版本；spiflash型号如打印信息，
 ``` | /
- RT -     Thread Operating System
 / |      1.2.0 build Jul 26 2013
 2006 - 2013 Copyright by rt-thread team
lwIP-1.4.1 initialized!
AT45DB041D detection
rtc is not configured
please configure with set_date and set_time
RTC Reconfig 
RCC BDCR = 0x8103
RTC TAFCR = 0x0
BKP SRAM write OK 
Fri Mar 18 08:00:00 2011
finsh />File System initialzation failed!```
此时提示elm文件系统加载失败，输入格式化命令mkfs("elm","flash0")可以格式化成功
```finsh />mkfs("elm","flash0")
        0, 0x00000000```
按realtouch的说明，此时reset系统后应该可以mount成功，但是还是提示mount失败，可重新格式化，但是无法加载，这是问题1
```  | /
- RT -     Thread Operating System
 / |      1.2.0 build Jul 26 2013
 2006 - 2013 Copyright by rt-thread team
lwIP-1.4.1 initialized!
AT45DB041D detection
Fri Mar 18 08:00:15 2011
finsh />File System initialzation failed!
```
2、rt-thread文件从github下载最新代码，替换后
 ``` | /
- RT -     Thread Operating System
 / |      1.2.0 build Jul 26 2013
 2006 - 2013 Copyright by rt-thread team
lwIP-1.4.1 initialized!
AT45DB041D detection
rtc is not configured
please configure with set_date and set_time
RTC Reconfig 
RCC BDCR = 0x8103
RTC TAFCR = 0x0
BKP SRAM write OK 
Fri Mar 18 08:00:00 2011
finsh />File System initialzation failed!```
此时输入格式化命令，无法格式化；提示错误，这是问题2
```format error
        -5, 0xfffffffb```

3、spi驱动程序spi_flash_at45dbxx是aozima写的，应该没有问题，于是下载了RealTouch_20121210_release工程包进行验证；
 ``` | /
- RT -     Thread Operating System
 / |      1.1.0 build Jul 26 2013
 2006 - 2012 Copyright by rt-thread team
TCP/IP initialized!
AT45DB041D detection
finsh />File System initialzation failed!```
输入格式化命令提示格式化OK
```finsh />mkfs("elm","flash0")
        0, 0x00000000```
reset后提示加载正常，文件测试什么的都OK；
 ``` | /
- RT -     Thread Operating System
 / |      1.1.0 build Jul 26 2013
 2006 - 2012 Copyright by rt-thread team
TCP/IP initialized!
AT45DB041D detection
finsh />flash0 mount to / ```
此时发现另外一个问题，ST407 reset软复位和硬件复位都提示加载正常，但是掉电重新上电后却提示加载失败，需要重新格式化才能加载成功，请问有遇到类似的问题吗？

下个星期准备仔细看一下这些问题，有消息了再来汇报。

10 个回答

chenytscut 2013-07-29

这家伙很懒，什么也没写！

挂载不成功，但使用device_test("flash0")测试驱动，信息如下，貌似驱动是OK的；
另外device_test("flash0")必须是在没有mount的情况下才能测试；

```
  | /
- RT -     Thread Operating System
 / |      1.2.0 build Jul 29 2013
 2006 - 2013 Copyright by rt-thread team
lwIP-1.4.1 initialized!
AT45DB041D detection
Fri Mar 18 08:39:13 2011
finsh>>File System initialzation failed!
device_test("flash0")

block device!

device info:
sector  size : 256 byte
sector count : 2048 
block   size : 2048 byte

device R/W test pass!

RT_TICK_PER_SECOND:100

continuous single sector speed test:
write: <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
write 200 sector from 499 to 718, 22.83Kbyte/s
read : >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
read 200 sector from 719 to 726, 714.28Kbyte/s

random single sector speed test:
write: <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
write 200 sector from 727 to 942, 23.25Kbyte/s
read : >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
read 200 sector from 942 to 949, 714.28Kbyte/s

multiple sector speed test
write: <<<<<<<<<<
multiple write 2 sector speed : 20.83Kbyte/s
read : >>>>>>>>>>
multiple read 2 sector speed : 500.0Kbyte/s

write: <<<<<<<<<<
multiple write 4 sector speed : 21.27Kbyte/s
read : >>>>>>>>>>
multiple read 4 sector speed : 500.0Kbyte/s

write: <<<<<<<<<<
multiple write 8 sector speed : 20.83Kbyte/s
read : >>>>>>>>>>
multiple read 8 sector speed : 666.66Kbyte/s

write: <<<<<<<<<<
multiple write 16 sector speed : 21.5Kbyte/s
read : >>>>>>>>>>
multiple read 16 sector speed : 666.66Kbyte/s

write: <<<<<<<<<<
multiple write 32 sector speed : 20.77Kbyte/s
read : >>>>>>>>>>
multiple read 32 sector speed : 666.66Kbyte/s

write: <<<<<<<<<<
multiple write 64 sector speed : 20.96Kbyte/s
read : >>>>>>>>>>
multiple read 64 sector speed : 695.65Kbyte/s

write: <<<<<<<<<<
multiple write 128 sector speed : 20.94Kbyte/s
read : >>>>>>>>>>
multiple read 128 sector speed : 711.11Kbyte/s

0, 0x00000000
finsh>>
```

验证驱动OK，排除了驱动问题；
对系统做mkfs，显示可以格式化，但是reset后还是显示无法挂载，如下所示

```
finsh>>mkfs("elm","flash0")
        0, 0x00000000
finsh>>reset()?
  | /
- RT -     Thread Operating System
 / |      1.2.0 build Jul 29 2013
 2006 - 2013 Copyright by rt-thread team
lwIP-1.4.1 initialized!
AT45DB041D detection
Fri Mar 18 09:38:21 2011

finsh>>File System initialzation failed!
```