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USB get slowly by time

Moamen Ayman
Associate III
Posted on April 29, 2017 at 10:54

Hello, I'm using stm32f407vgt6 and I'm sending data from computer(host) to the MCU(device) through USB in FS mode using CDC library, The total data size is 8MByte and I'm sending it 4KByte by 4KByte (2048 times). What I'm facing is the the data rate being received from the PC is getting slowly by the time. mainly I get first 250 packets(each packet is 4KByte) fast but the next packets are being received slower and slower. I don't know what may be the reason!

#clive-one
1 REPLY 1
Moamen Ayman
Associate III
Posted on May 01, 2017 at 00:13

Could someone help? any idea what may be the reason causing this problem?