数据写入有问题

发布于 2020-02-13 22:34:36 浏览：1497 订阅该版

```msh >sf write 0x601000 1 2 3 
send:5
rec:2
send:5
rec:0
send:5
rec:0
Write the sf_cmd flash data success. Start from 0x00601000, size is 3.
Write data: 1 2 3 .
msh >sf read 0x601000 32
send:5
rec:0
send:360100
rec:100010000000f0000000807a001000e07900
Read the sf_cmd flash data success. Start from 0x00601000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00601000] 01 00 00 00 01 00 00 00 00 00 00 00 0F 00 00 00 ................
[00601010] 00 00 00 00 80 7A 00 00 01 00 00 00 E0 79 00 00 .....z.......y..

msh >sf read 0x601000 32
send:5
rec:0
send:360100
rec:100010000000f0000000807a001000e07900
Read the sf_cmd flash data success. Start from 0x00601000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00601000] 01 00 00 00 01 00 00 00 00 00 00 00 0F 00 00 00 ................
[00601010] 00 00 00 00 80 7A 00 00 01 00 00 00 E0 79 00 00 .....z.......y..

msh >sf write 0x601000 1 2 3 
send:5
rec:2
send:5
rec:0
send:5
rec:0
Write the sf_cmd flash data success. Start from 0x00601000, size is 3.
Write data: 1 2 3 .```使用的是GD25LQ128这型号，现在能正常读取到ID， 而且sf read 读取到的数据是正确的，但是sf write 存在问题。
目前是怀疑spi底层函数存在问题，sf read 正常，则spi_send_then_rec是正常的， 而sf write不正常，不清楚这个函数最终调用的是spi中的哪个函数接口，没找到spi->wr的指向。

7 个回答

freedom195 2020-02-13

好好学习，天天向上

freedom195 2020-02-13

好好学习，天天向上

```
msh >sf read 0x601000 32
send:05
rec:00
send:03601000
rec:0100000001000000000000000f00000000000000807a000001000000e0790000
Read the sf_cmd flash data success. Start from 0x00601000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00601000] 01 00 00 00 01 00 00 00 00 00 00 00 0F 00 00 00 ................
[00601010] 00 00 00 00 80 7A 00 00 01 00 00 00 E0 79 00 00 .....z.......y..

msh >sf write 0x601000 1 2 3 
send_cmd:06
send:05
rec:02
send_cmd:02601000010203
send:05
rec:00
send_cmd:04
send:05
rec:00
Write the sf_cmd flash data success. Start from 0x00601000, size is 3.
Write data: 1 2 3 .
msh >sf read 0x601000 32
send:05
rec:00
send:03601000
rec:0100000001000000000000000f00000000000000807a000001000000e0790000
Read the sf_cmd flash data success. Start from 0x00601000, size is 32. The data is:
Offset (h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
[00601000] 01 00 00 00 01 00 00 00 00 00 00 00 0F 00 00 00 ................
[00601010] 00 00 00 00 80 7A 00 00 01 00 00 00 E0 79 00 00 .....z.......y..
```

修改了函数接口之后，sf write 函数依然存在问题。对flash操作不熟悉，不知道现在这个指令顺序是否是正确的。
有人能指导下么？