Posted on May 17, 2011 at 09:42Hello,
I'm trying to use the STRUSB libs in my project.
In order to use some custom command I found that the
pInformation->USBwValue has the low and high bytes swapped.
so if I send 0x00001 from pc I obtain 0x1000 in fw.
I thought that in the libs the convention was big endian....
I cheched the project config in the examples and the
settings are little endian (like my config)
I modified the code of Setup0_Process() as following and
the code seem to work.
Any remarks ?
u8 Setup0_Process(void)
{
u16* pBuf;
pBuf= (u16 *)(GetEPRxAddr(ENDP0)+PMAAddr);
if (pInformation->ControlState != PAUSE)
{
pInformation->USBbmRequestType = (*pBuf)&0xFF; /* bmRequestType */
pInformation->USBbRequest = ((*pBuf)&0xFF00)>>8; /* bRequest */
pInformation->USBwValue = (*(pBuf+1)); /* wValue */
pInformation->USBwIndex = (*(pBuf+2)); /* wIndex */
// pInformation->USBwValue = ByteSwap(*(pBuf+1)); /* wValue */
// pInformation->USBwIndex = ByteSwap(*(pBuf+2)); /* wIndex */
pInformation->USBwLength = *(pBuf+3); /* wLength */
}
....
}
