SD card library?

[Alexey]

Hi All,

Is there a library for reading/writing files on SD card?

Thank you

[mackrackit]

SDFS3.zip
http://melabs.com/samples/PBP-mixed/sdfs3.htm

[Alexey]

Wow! Thank you Mackrackit, will try. I was afraid may have to use another language which I always try to avoid...

[mackrackit]

Here is a project example
http://www.picbasic.co.uk/forum/cont...USB-SD-LOGGING

[Alexey]

Hello Macrackit,

Thank you very much for the very good data logging sample! Also thank you for attaching the file as the link http://www.melabs.com/resources/samples/pbp/sdfs3.zip seems to be no longer available (page not found)

Best regards

[KVLV]

a quick search found this http://melabs.com/samples/PBP-mixed/sdfs3.htm

[micromaster]

Hi all

i also have been working with sd filing system with number of lang: including pic basic and hi-tec c . all of them worked very well with proteus simulation environment(isis). but all of them were very unstable when i build them in practical world. Can anyone give me some tips to make them stably working?? ive used home made p.c.bs for my systems. Are there any specific potential dividing resisters to be used at port outputs and sd card input? ive been using 1k + 10k combination.any caps mabe?? im using pic 18f 2550 for all of my sd card based systems.

[pedja089]

How much current sd card is draw when writing file?

[mackrackit]

Run the whole system at 3.3 volts and then you will not have to use dividing resistors.

[pedja089]

I meant on power supply pin.
I'm waiting for test pcb to arrive from manufacturer....

[micromaster]

Run the whole system at 3.3 volts and then you will not have to use dividing resistors.

Thanks, but will pic 18f2550 can run on 3.3v? because its hard to find any other lo power versions in our electronic shops.

thanks.

[mackrackit]

Yes, the 2550 and 4550 will run on 3.3 volt. See the link in post #4.

Use a 4MHz external OSC and the chip can be PLL'ed to 48 MHz if needed. The electrical section of the data sheet shows what can be done.