> I don't understand those control message parts and it is bit too hard to
> read i2c adapter implementation to get understanding. Could you offer
> simple 2 sniff examples, register write to demod and register write to
> tuner.
Here is the part of a packet log.
1. write to demod (addr:0x18)
reg:0x76 val:0c
===============
[46264 ms] >>> URB 146 going down >>>
-- URB_FUNCTION_VENDOR_DEVICE:
TransferFlags = 00000000 (USBD_TRANSFER_DIRECTION_OUT, ~USBD_SHORT_TR
ANSFER_OK)
TransferBufferLength = 00000000
TransferBuffer = 8609d21e
TransferBufferMDL = 00000000
UrbLink = 00000000
RequestTypeReservedBits = 00000000
Request = 00000001
Value = 0000300c
Index = 00000076
[46266 ms] UsbSnoop - MyInternalIOCTLCompletion(f79b7db0) : fido=00000000, Irp=8
58f2938, Context=858c4ed8, IRQL=2
[46266 ms] <<< URB 146 coming back <<<
-- URB_FUNCTION_CONTROL_TRANSFER:
PipeHandle = 86239260
TransferFlags = 0000000a (USBD_TRANSFER_DIRECTION_OUT, USBD_SHORT_TRANS
FER_OK)
TransferBufferLength = 00000000
TransferBuffer = 8609d21e
TransferBufferMDL = 00000000
UrbLink = 00000000
SetupPacket =
00000000: 40 01 0c 30 76 00 00 00
===============
2. write to tuner (addr:0x60)
write [0f 7b b2 08] to addr 0x60
===============
[47267 ms] >>> URB 147 going down >>>
-- URB_FUNCTION_VENDOR_DEVICE:
TransferFlags = 00000000 (USBD_TRANSFER_DIRECTION_OUT, ~USBD_SHORT_TR
ANSFER_OK)
TransferBufferLength = 00000005
TransferBuffer = 8581c7d6
TransferBufferMDL = 00000000
00000000: c0 0f 7b b2 08
UrbLink = 00000000
RequestTypeReservedBits = 00000000
Request = 00000003
Value = 00003000
Index = 000000fe
[47270 ms] UsbSnoop - MyInternalIOCTLCompletion(f79b7db0) : fido=00000000, Irp=8
58f2008, Context=86275258, IRQL=2
[47270 ms] <<< URB 147 coming back <<<
-- URB_FUNCTION_CONTROL_TRANSFER:
PipeHandle = 86239260
TransferFlags = 0000000a (USBD_TRANSFER_DIRECTION_OUT, USBD_SHORT_TRANS
FER_OK)
TransferBufferLength = 00000005
TransferBuffer = 8581c7d6
TransferBufferMDL = 855f7760
UrbLink = 00000000
SetupPacket =
00000000: 40 03 00 30 fe 00 05 00
===============
3. read from tuner
read one byte from addr 0x60
(2 USB packets)
===============
[46036 ms] >>> URB 26 going down >>>
-- URB_FUNCTION_VENDOR_DEVICE:
TransferFlags = 00000000 (USBD_TRANSFER_DIRECTION_OUT, ~USBD_SHORT_TR
ANSFER_OK)
TransferBufferLength = 00000001
TransferBuffer = 8609d21e
TransferBufferMDL = 00000000
00000000: c1
UrbLink = 00000000
RequestTypeReservedBits = 00000000
Request = 00000003
Value = 00003000
Index = 000000fe
[46038 ms] UsbSnoop - MyInternalIOCTLCompletion(f79b7db0) : fido=00000000, Irp=8
58f2938, Context=858ccea0, IRQL=2
[46038 ms] <<< URB 26 coming back <<<
-- URB_FUNCTION_CONTROL_TRANSFER:
PipeHandle = 86239260
TransferFlags = 0000000a (USBD_TRANSFER_DIRECTION_OUT, USBD_SHORT_TRANS
FER_OK)
TransferBufferLength = 00000001
TransferBuffer = 8609d21e
TransferBufferMDL = 855f7760
UrbLink = 00000000
SetupPacket =
00000000: 40 03 00 30 fe 00 01 00
[46038 ms] >>> URB 27 going down >>>
-- URB_FUNCTION_VENDOR_DEVICE:
TransferFlags = 00000001 (USBD_TRANSFER_DIRECTION_IN, ~USBD_SHORT_TRA
NSFER_OK)
TransferBufferLength = 00000001
TransferBuffer = 8609d21e
TransferBufferMDL = 00000000
UrbLink = 00000000
RequestTypeReservedBits = 00000000
Request = 00000002
Value = 00003000
Index = 00000100
[46040 ms] UsbSnoop - MyInternalIOCTLCompletion(f79b7db0) : fido=00000000, Irp=8
58f2938, Context=86366778, IRQL=2
[46040 ms] <<< URB 27 coming back <<<
-- URB_FUNCTION_CONTROL_TRANSFER:
PipeHandle = 86239260
TransferFlags = 0000000b (USBD_TRANSFER_DIRECTION_IN, USBD_SHORT_TRANSF
ER_OK)
TransferBufferLength = 00000001
TransferBuffer = 8609d21e
TransferBufferMDL = 855f7760
00000000: 7c
UrbLink = 00000000
SetupPacket =
00000000: c0 02 00 30 00 01 01 00
============
Note: In log 2 & 3, "Request" parameter value is different from log 1.
regards,
Akihiro
