Problem with AT+S.HTTPDFSUPDATE for SPWF01

[Z.Oleg]

Hello all

I have a problem with updating the filesystem over http

AT+S.HTTPDFSUPDATE=192.168.3.2,/fs.img,8079

this is the command i use to update the fs.

The logs of the local webserver tell

192.168.3.1 - - [14/Jan/2019:13:29:51 +0300] "GET /fs.img HTTP/1.0" 200 14600 "-" "SPWF01SC1"

so the download happens. on the spwf01 console i see

Image length 20694 (offset 0x00080000, block len 4096)

Write len 2694 -> 0x80000 (final)

Wrote 2694 bytes

Error (-3 @ 2690/20696), cleaning up..

so i get an error and the filesystem is not updated.

the firmware of the wifi module is the latest (updated a week ago)

[Elio Cometti]

​Hello,

it seems the SPWF01 is running low on memory.

Could you please:

• report the WIND:1: content (to get the release number)
• type AT+S.STS=free_heap and AT+S.STS=min_heap just before and just after the HTTPDFSUPDATE command to check the memory level

Thanks,

Regards,

Elio

[Z.Oleg]

Hello,

> RELEASE

+WIND:1:Poweron (170111-665d284-SPWF01S)

> BEFORE

# free_heap = 15600

# min_heap = 10848

> UPDATE

Image length 20694 (offset 0x00080000, block len 4096)

Write len 3424 -> 0x80000 (final)

Wrote 3424 bytes

Error (-3 @ 3420/20696), cleaning up..

> AFTER

# free_heap = 17232

# min_heap = 6040

[Z.Oleg]

Just to add,

sometimes, very rarely, 1 of many tries, the update IS succeseful

# free_heap = 17152

# min_heap = 7624

Image length 20694 (offset 0x00080000, block len 4096)

Write len 4096 -> 0x80000

Write len 4096 -> 0x81000

Write len 4096 -> 0x82000

Write len 4096 -> 0x83000

Write len 4096 -> 0x84000

Write len 220 -> 0x85000 (final)

Wrote 20700 bytes

Complete! Please reboot. (at+cfun=1)

# free_heap = 17152

# min_heap = 7592

[Elio Cometti]

​Hello,

actually the HTTPDFSUPDATE command will fail if the available memory is too low or too fragmented.

If your use case allow it, I suggest to perform the FS update as soon as possible after a boot.

Regards,

Elio