Dear all,
I've developed a usb host client driver for my modem device.
In more detail, it is a usb cdc acm driver.
My driver follows stream driver model and creates a COM port for modem
use.
Then, I write a http client application to test my driver.
When getting small-size file (<100KByte), it can download successfully.
If the application gets big-size file(>1000KByte), the driver runs for
a while
and stops. So, the usb bulk transfer is halt and do nothing.
Could someone tell me why? Thanks!!
PS: My OS is WinCE.NET 4.2; HW is Xsale EVM.
-Kemin