AnsweredAssumed Answered

USB get slowly by time

Question asked by Moamen Ayman on Apr 29, 2017
Latest reply on May 1, 2017 by Moamen Ayman

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!