Why can't I transmit more than 1 byte at a time on a USB bus?

Hello all, I am trying to send a couple of bytes from an ARM7 to my PC. but whatever I do (I adjusted the packet size in the USB endpoint descriptor) the PC either receives one byte (if I sent one)...
Why can't I transmit more than 1 byte at a time on a USB bus?

Hello all, I am trying to send a couple of bytes from an ARM7 to my PC. but whatever I do (I adjusted the packet size in the USB endpoint descriptor) the PC either receives one byte (if I sent one)...
can't change the font

If I change the font,the keil-5 will stop running and quit.
can't change the font

If I change the font,the keil-5 will stop running and quit.
FTP client can't send more than 2920 bytes

Hi All, When I send a file with the FTP client it only sends to the server 2920 bytes... If the filesize is below 2920 bytes all is ok, but, when 2920 or more this is truncated to 2920.. I tried...