bool SendDescriptor()
{
Setup& setup = _setup;
u8 desc_length = 0;
const u8* desc_addr = 0;
u8 t = setup.wValueH;
if (0x22 == t)
{
desc_addr = _rawHID;
desc_length = sizeof(desc_length);
} else if (USB_DEVICE_DESCRIPTOR_TYPE == t)
{
if (setup.wLength == 8)
_cdcComposite = 1;
desc_addr = _cdcComposite ? (const u8*)&USB_DeviceDescriptorA : (const u8*)&USB_DeviceDescriptor;
}
else if (USB_CONFIGURATION_DESCRIPTOR_TYPE == t)
{
desc_addr = (const u8*)&USB_ConfigDescriptor;
desc_length = sizeof(USB_ConfigDescriptor);
}
else if (USB_STRING_DESCRIPTOR_TYPE == t)
{
if (setup.wValueL == 0)
desc_addr = (const u8*)&STRING_LANGUAGE;
else if (setup.wValueL == IPRODUCT)
desc_addr = (const u8*)&STRING_IPRODUCT;
else if (setup.wValueL == ISERIAL)
desc_addr = (const u8*)&STRING_SERIAL;
else if (setup.wValueL == IMANUFACTURER)
desc_addr = (const u8*)&STRING_IMANUFACTURER;
else
return false;
} else
return false;
if (desc_length == 0)
desc_length = pgm_read_byte(desc_addr);
if ((u8)setup.wLength < desc_length) // bit of a cheat limiting to 255 bytes TODO (saved 8 bytes)
desc_length = (u8)setup.wLength;
// Send descriptor
// EP0 is 64 bytes long
// RWAL and FIFOCON don't work on EP0
u8 n = 0;
do
{
if (!WaitForINOrOUT())
return false;
Send8(pgm_read_byte(&desc_addr[n++]));
u8 clr = n & 0x3F;
if (!clr)
ClearIN(); // Fifo is full, release this packet
} while (n < desc_length);
return true;
}
static bool
SendControl(uint8_t d)
{
if (_cmark < _cend) {
if (!WaitForINOrOUT()) return (false);
Send8(d);
if (!((_cmark + 1) & 0x3F)) ClearIN();
}
_cmark++;
return (true);
};
static
bool SendControl(u8 d)
{
if (_cmark < _cend)
{
if (!WaitForINOrOUT())
return false;
Send8(d);
if (!((_cmark + 1) & 0x3F))
ClearIN(); // Fifo is full, release this packet
}
_cmark++;
return true;
};