STM32F7 Discovery USB Hi Speed too slow

[stucrouc]

Posted on May 18, 2016 at 15:43

Hello,

we are working on an USB Hi Speed Project with a STM32F7 Discovery. We compiled and flashed the demo Mass Stoarge Device application (from Cube) and inserted a CLASS 10 Micro SD Card in the Discovery Board. We tested the data rate, but we are not able to get over 378kByte/s write and 1,47MByte/s read. We also tested the same Micro SD Card with our Mobile Phone at the same USB Port and we easily reached higher transfer rates.

Does anyone have an idea what we do wrong?

Best regards

[Tesla DeLorean]

Posted on May 18, 2016 at 20:41

[DEAD LINK /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/USB%20MSC%20device%20low%20transfer%20rate%20-%20STM32F7&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&TopicsView=https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/AllItems.aspx&currentviews=16]Related thread, you should pool your resources..