hey!
thanks for your answer
i have nearly given up, but we'll hopefully get it working
nope, i didn't, i'll try that out, but i checked the pc-log against the descriptor contents in the sourcecode, it looked fine...
but I'll check that.
interrupt latency...no idea, but as it works on xp, why shouldn't it under vista/seven?
has microsoft lowered support for low-speed devices in the new os's?
what's strange to me is that i can run the device (at least some parts) on a Seven inside a VM on a Seven host while it doesn't work on the host.
Any idea why that's possible?
as we only have modified an existing device, i post you the changed descriptor parts...maybe you can find anything
Code: Select all
[config Descriptor]
/* IAD descriptor */
/* to merge the 2 CDC-Devices together as it's a composite device */
8,
11, // bDescriptorType = 11
0x00, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass (Communication Class)
0x02, // bFunctionSubClass (Abstract Control Model)
0x01, // bFunctionProcotol (V.25ter, Common AT commands)
0x00, // iInterface
[CDC - Interface Descriptor with one Endpoint]
[CDC Data Interface Descriptor with 2 Endpoints]
[Another costum-device interface descriptor ]
here's the complete config descriptor...
Code: Select all
static PROGMEM char configDescrCDC[] = { /* USB configuration descriptor */
9, /* sizeof(usbDescrConfig): length of descriptor in bytes */
USBDESCR_CONFIG, /* descriptor type */
84,
0, /* total length of data returned (including inlined descriptors) */
3, /* number of interfaces in this configuration */
1, /* index of this configuration */
0, /* configuration name string index */
#if USB_CFG_IS_SELF_POWERED
USBATTR_SELFPOWER, /* attributes */
#else
USBATTR_BUSPOWER, /* attributes */
#endif
USB_CFG_MAX_BUS_POWER/2, /* max USB current in 2mA units */
/* IAD descriptor */
8,
11, // bDescriptorType = 11
0x00, // bFirstInterface
0x02, // bInterfaceCount
0x02, // bFunctionClass (Communication Class)
0x02, // bFunctionSubClass (Abstract Control Model)
0x01, // bFunctionProcotol (V.25ter, Common AT commands)
0x00, // iInterface
/* Test */
/* interface descriptor follows inline: */
9, /* sizeof(usbDescrInterface): length of descriptor in bytes */
USBDESCR_INTERFACE, /* descriptor type */
0, /* index of this interface */
0, /* alternate setting for this interface */
USB_CFG_HAVE_INTRIN_ENDPOINT, /* endpoints excl 0: number of endpoint descriptors to follow */
USB_CFG_INTERFACE_CLASS,
USB_CFG_INTERFACE_SUBCLASS,
USB_CFG_INTERFACE_PROTOCOL,
0, /* string index for interface */
/* CDC Class-Specific descriptor */
5, /* sizeof(usbDescrCDC_HeaderFn): length of descriptor in bytes */
0x24, /* descriptor type */
0, /* header functional descriptor */
0x10, 0x01,
4, /* sizeof(usbDescrCDC_AcmFn): length of descriptor in bytes */
0x24, /* descriptor type */
2, /* abstract control management functional descriptor */
0x02, /* SET_LINE_CODING, GET_LINE_CODING, SET_CONTROL_LINE_STATE */
5, /* sizeof(usbDescrCDC_UnionFn): length of descriptor in bytes */
0x24, /* descriptor type */
6, /* union functional descriptor */
0, /* CDC_COMM_INTF_ID */
1, /* CDC_DATA_INTF_ID */
5, /* sizeof(usbDescrCDC_CallMgtFn): length of descriptor in bytes */
0x24, /* descriptor type */
1, /* call management functional descriptor */
3, /* allow management on data interface, handles call management by itself */
1, /* CDC_DATA_INTF_ID */
/* Endpoint Descriptor */
7, /* sizeof(usbDescrEndpoint) */
USBDESCR_ENDPOINT, /* descriptor type = endpoint */
0x83, /* IN endpoint number 3 */
0x03, /* attrib: Interrupt endpoint */
8, 0, /* maximum packet size */
USB_CFG_INTR_POLL_INTERVAL, /* in ms */
/* Interface Descriptor */
9, /* sizeof(usbDescrInterface): length of descriptor in bytes */
USBDESCR_INTERFACE, /* descriptor type */
1, /* index of this interface */
0, /* alternate setting for this interface */
2, /* endpoints excl 0: number of endpoint descriptors to follow */
0x0A, /* Data Interface Class Codes */
0,
0, /* Data Interface Class Protocol Codes */
0, /* string index for interface */
/* Endpoint Descriptor */
7, /* sizeof(usbDescrEndpoint) */
USBDESCR_ENDPOINT, /* descriptor type = endpoint */
0x01, /* OUT endpoint number 1 */
0x02, /* attrib: Bulk endpoint */
HW_CDC_BULK_OUT_SIZE, 0, /* maximum packet size */
0, /* in ms */
/* Endpoint Descriptor */
7, /* sizeof(usbDescrEndpoint) */
USBDESCR_ENDPOINT, /* descriptor type = endpoint */
0x81, /* IN endpoint number 1 */
0x02, /* attrib: Bulk endpoint */
HW_CDC_BULK_IN_SIZE, 0, /* maximum packet size */
0, /* in ms */
/* usbasp descriptor */
9, /* sizeof () usbasp descriptor */
USBDESCR_INTERFACE, /* descriptor Type */
2, /* index for this interface */
0, /* alternate Setting for this interface */
0, /* number of endpoint descriptros to follow */
0, /* interface class */
0, /* interface subclass */
0, /* interface protocol */
0, /* string index for interface */
};
here's the device descriptor, we changed the device class/subclass as we're using the IAD.
Code: Select all
PROGMEM char usbDescriptorDevice[] = { /* USB device descriptor */
18, /* sizeof(usbDescriptorDevice): length of descriptor in bytes */
USBDESCR_DEVICE, /* descriptor type */
0x10, 0x01, /* USB version supported */
0xEF, /* USB_CFG_DEVICE_CLASS */
0x02, /* USB_CFG_DEVICE_SUBCLASS */
1, /* protocol */
8, /* max packet size */
/* the following two casts affect the first byte of the constant only, but
* that's sufficient to avoid a warning with the default values.
*/
(char)USB_CFG_VENDOR_ID,/* 2 bytes */
(char)USB_CFG_DEVICE_ID,/* 2 bytes */
USB_CFG_DEVICE_VERSION, /* 2 bytes */
USB_CFG_DESCR_PROPS_STRING_VENDOR != 0 ? 1 : 0, /* manufacturer string index */
USB_CFG_DESCR_PROPS_STRING_PRODUCT != 0 ? 2 : 0, /* product string index */
USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER != 0 ? 3 : 0, /* serial number string index */
1, /* number of configurations */
};
