数据写入bug

发布于 2020-02-15 00:01:09 浏览：1543 订阅该版

附上调试log
```sh >sf probe spi30
set spi freq 67166666
[SFUD] Find a GigaDevice flash chip. Size is 16777216 bytes.
[SFUD] sf_cmd flash device is initialize success.
16 MB sf_cmd is current selected device.
msh >sf read 0x200000 32
Read the sf_cmd flash data success. Start from 0x00200000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00200000] 01 02 03 04 05 FF FF FF FF FF FF FF FF FF FF FF ................
[00200010] FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................

msh >sf write 0x200000 8 8 8 8 8 8 
Write the sf_cmd flash data success. Start from 0x00200000, size is 6.
Write data: 8 8 8 8 8 8 .
msh >sf read 0x200000 32
Read the sf_cmd flash data success. Start from 0x00200000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00200000] 00 00 00 00 00 08 FF FF FF FF FF FF FF FF FF FF ................
[00200010] FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................

msh >sf write 0x200010 8 8 8 8 8 8  
Write the sf_cmd flash data success. Start from 0x00200010, size is 6.
Write data: 8 8 8 8 8 8 .
msh >sf read 0x200000 32
Read the sf_cmd flash data success. Start from 0x00200000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00200000] 00 00 00 00 00 08 FF FF FF FF FF FF FF FF FF FF ................
[00200010] 08 08 08 08 08 08 FF FF FF FF FF FF FF FF FF FF ................

msh >sf erase 0x200000 1
Erase the sf_cmd flash data success. Start from 0x00200000, size is 1.
msh >sf read 0x200000 32
Read the sf_cmd flash data success. Start from 0x00200000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00200000] FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
[00200010] FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................

msh >sf write 0x200010 8 8 8 8 8 8 
Write the sf_cmd flash data success. Start from 0x00200010, size is 6.
Write data: 8 8 8 8 8 8 .
msh >sf read 0x200000 32
Read the sf_cmd flash data success. Start from 0x00200000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00200000] FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
[00200010] 08 08 08 08 08 08 FF FF FF FF FF FF FF FF FF FF ................

msh >sf write 0x200000 8 8 8 8 8 8  
Write the sf_cmd flash data success. Start from 0x00200000, size is 6.
Write data: 8 8 8 8 8 8 .
msh >sf read 0x200000 32
Read the sf_cmd flash data success. Start from 0x00200000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00200000] 08 08 08 08 08 08 FF FF FF FF FF FF FF FF FF FF ................
[00200010] 08 08 08 08 08 08 FF FF FF FF FF FF FF FF FF FF ................

msh >sf write 0x200000 7 7 7 7 7   
Write the sf_cmd flash data success. Start from 0x00200000, size is 5.
Write data: 7 7 7 7 7 .
msh >sf read 0x200000 32
Read the sf_cmd flash data success. Start from 0x00200000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00200000] 00 00 00 00 00 08 FF FF FF FF FF FF FF FF FF FF ................
[00200010] 08 08 08 08 08 08 FF FF FF FF FF FF FF FF FF FF ................```在这个测试中发现，写入数据，若写入的位置原本是FF的话，则可以写入，但若不是FF ,则无法写入，重新erase之后，存储的位置又变成FF，则可以再次写入
在调试SFUD中发现的问题。有人清楚这是怎么一回事么？