Unable to load files on to sd card

Hardware Arduino Yún
#1

Anytime I try to place something in the www folder in the sd card connected to my yun I get the following message.

"Warning: Problem accessing board folder www/sd"

I am also unable to access the sd card by using the address in the web server tutorial "192.168.x.x/local/sd"

I have placed a www folder inside of my sketch folder, and have also placed a folder called "arduino" with a sub folder "www" on the sd card itself. I have read a couple other posts on this, however I cant seem to find anything to get mine to work. Any ideas? Thanks!

#2

I have successfully accessed files placed in the www folder from a sketch and a python script.
I used this path notation: /www/sd/myfile.txt

#3

mamu:
I have successfully accessed files placed in the www folder from a sketch and a python script.
I used this path notation: /www/sd/myfile.txt

That doesn't work for me even after manually placing a file on the sd card using my computer. Is there an easy way to check if the sd card is even being recognized by the yun?

#4

Hm, is your file system FAT ? I'm not sure if FAT32 is supported.
Or have you used HFS to format your sd?
To test: make a ssh connection and try to cd to /www/sd

#5

Hi Valerin

try connecting to the Yun using SSH, remove and insert again the SD card and send us the output of the dmesg command

#6

I am unable to cd to www/sd. The flashdrive is formatted as FAT 32. Here is the result of the dmesg command

[ 152.450000] sda: detected capacity change from 16007561216 to 0
[ 165.670000] sd 0:0:0:0: [sda] 31264768 512-byte logical blocks: (16.0 GB/14.9 GiB)
[ 165.770000] sd 0:0:0:0: [sda] No Caching mode page present
[ 165.770000] sd 0:0:0:0: [sda] Assuming drive cache: write through
[ 165.770000] sd 0:0:0:0: [sda] No Caching mode page present
[ 165.780000] sd 0:0:0:0: [sda] Assuming drive cache: write through
[ 165.850000] sda: sda1

#7

Hi

the SD card is correctly found (sda1)... but Linino won't create the link /www/sd if it doesn't find the correct folder structure on your SD:

http://www.lucadentella.it/2013/11/12/yun-utilizziamo-una-scheda-sd/

#8

valerin, for the IDE to upload files (as with the TemperatureWebPanel example), your sd car must have a folder named "arduino" with a subfolder "www" (so the folder structure will be SD/arduino/www)

regarding filesystems: yun supports fat32 as well as ext3/4, hfs, ntfs out of the box. support for things like msdos, iso, nfs and others is optional and available as installable packages
yun does NOT support fat64, and I think nothing but the latest windows supports it, so just don't use it.

#9

[quote author=Federico Fissore link=topic=200415.msg1480487#msg1480487 date=1385299742]regarding filesystems: yun supports fat32 as well as ext3/4, hfs, ntfs out of the box. support for things like msdos, iso, nfs and others is optional and available as installable packages
yun does NOT support fat64, and I think nothing but the latest windows supports it, so just don't use it.
[/quote]
Great! Is this already documented elsewhere?

#10

Actually no, the only place is the image configuration file. The packages are the ones whose name starts with "kmod-fs-" in the package repository
Do you mind adding a short paragraph to the playground page?

#11

If it is not time critical I will do.

#12

Where would you expect the article to got?
Arduino Playground - HomePage -> "SD / MMC Card"

#13

Yun playground Arduino Playground - Yun

#14

Have a look here: Arduino Playground - HomePage

#15