Martin Dusek

USB Mass Storage Host - speed

Discussion created by Martin Dusek on Mar 27, 2013
Latest reply on Feb 26, 2015 by Mark Wang


I get only 25 kb/s transfer speed from TWR-K70 (full speed usb module used) to 2GB Flash stick (FAT32, 512 b allocation unit). Several different sticks used.


My program is derived from msd_mfs_generic_test - no changes made to the project, only transfer speed benchmark added to it.


The transfer speed is measured at disk_write() function - its takes 20 ms to execute it. Every call writes one sector (512) so the transfer speed is 25 kb/s.


I have no clue how to speed it up...