Content originally posted in LPCWare by jonas2 on Wed Jul 02 04:13:17 MST 2014
Hi,
I use FatFs R0.09 on a Cortex M3 microcontroller (LPC1778) in a multitask environment
(Crossworks tasking library).
I've noticed that some FatFs functions take a lot of time executing, e.g.
f_open: 40 ms
f_close 7 ms
Is this what I should expect or can I somehow decrease the processing time these functions "consume". The clock is running @120MHz so there is a lot of instructions needed for these functions.
One solution would be to open all files at startup and never close them so I only need to use f_write and f_read but I'm not sure if that is a correct way to use FatFs. Have anyone used FatFs like that?
Otherwise FatFs works perfectly.
Thanks!
Jonas
