Hi All,
During development my USB-CDC driver, I have met
another com initialization problem. Symptoms are that
hyperterminal returns cannot initialize COMx.
I have sniffed transmission between host and the
device. First two errors occurs in packet #12 (result
code 0xc0010000) and #13 (result code 0xc0000004).
00 20 00 00 00 00 07 00
data direction: host to device
type: standard
recipient: interface
req->request: Set line coding
21 20 00 00 00 00 07 00
data direction: host to device
type: class
recipient: interface
req->request: Set line coding
00 21 00 00 00 00 07 00
data direction: host to device
type: standard
recipient: interface
req->request: Set line coding
a1 21 00 00 00 00 07 00
data direction: host to device
type: class
recipient: interface
req->request: Set line coding
My question is what may be the cause of device replies
0xc0010000 and 0xc0000004?
I will be very grateful for any suggestions.
My driver has implementation of functions:
usbs_at91_ep0.standard_control_fn
usbs_at91_ep0.class_control_fn
usbs_at91_ep0.reserved_control_fn
functions returns USBS_CONTROL_RETURN_HANDLED
in operations
USB_SET_LINE_CODING 0x20
USB_GET_LINE_CODING 0x21
USB_SET_CONTROL_LINE_STATE 0x22 requests.
Below details of communication and all packet
sequence...
packets #12 and #13....
12 out down n/a 20.069 CLASS_INTERFACE 00 c2 01 00 01
00 08
URB Header (length: 80)
SequenceNumber: 12
Function: 001b (CLASS_INTERFACE)
PipeHandle: 851ac7e0
SetupPacket:
0000: 00 20 00 00 00 00 07 00
bmRequestType: 00
DIR: Host-To-Device
TYPE: Standard
RECIPIENT: Device
bRequest: 20
unknown!
TransferBuffer: 0x00000007 (7) length
0000: 00 c2 01 00 01 00 08
12 out up n/a 50.092 CONTROL_TRANSFER - 0xc0010000
URB Header (length: 80)
SequenceNumber: 12
Function: 0008 (CONTROL_TRANSFER)
PipeHandle: 851ac7e0
SetupPacket:
0000: 21 20 00 00 00 00 07 00
bmRequestType: 21
DIR: Host-To-Device
TYPE: Class
RECIPIENT: Interface
bRequest: 20
No TransferBuffer
13 out down n/a 50.092 CLASS_INTERFACE -
URB Header (length: 80)
SequenceNumber: 13
Function: 001b (CLASS_INTERFACE)
PipeHandle: 851ac7e0
SetupPacket:
0000: 00 21 00 00 00 00 07 00
bmRequestType: 00
DIR: Host-To-Device
TYPE: Standard
RECIPIENT: Device
bRequest: 21
unknown!
No TransferBuffer
13 in up n/a 50.112 CONTROL_TRANSFER 0xc0000004
URB Header (length: 80)
SequenceNumber: 13
Function: 0008 (CONTROL_TRANSFER)
PipeHandle: 851ac7e0
SetupPacket:
0000: a1 21 00 00 00 00 07 00
bmRequestType: a1
DIR: Device-To-Host
TYPE: Class
RECIPIENT: Interface
bRequest: 21
TransferBuffer: 0x00000000 (0) length
All transmission:
1 in down n/a 0.000 GET_DESCRIPTOR_FROM_DEVICE
1 in up n/a 0.000 CONTROL_TRANSFER 12 01 10 01 02 00
00 08 0x00000000
2 in down n/a 0.000 GET_DESCRIPTOR_FROM_DEVICE
2 in up n/a 0.000 CONTROL_TRANSFER 09 02 43 00 02 01
00 c0 0x00000000
3 ??? down n/a 0.000 SELECT_CONFIGURATION
3 ??? up n/a 0.060 SELECT_CONFIGURATION 0x00000000
4 out down n/a 0.060 CLASS_INTERFACE -
4 in up n/a 0.060 CONTROL_TRANSFER 00 c2 01 00 01 00
08 0x00000000
5 out down n/a 0.060 CLASS_INTERFACE -
5 out up n/a 0.060 CONTROL_TRANSFER - 0x00000000
6 ??? down n/a 0.060 BULK_OR_INTERRUPT_TRANSFER -
7 ??? down n/a 0.060 BULK_OR_INTERRUPT_TRANSFER -
8 out down n/a 20.049 CLASS_INTERFACE -
8 in up n/a 20.049 CONTROL_TRANSFER 00 c2 01 00 01 00
08 0x00000000
9 out down n/a 20.049 CLASS_INTERFACE -
9 in up n/a 20.049 CONTROL_TRANSFER 00 c2 01 00 01 00
08 0x00000000
10 out down n/a 20.049 CLASS_INTERFACE -
10 in up n/a 20.049 CONTROL_TRANSFER 00 c2 01 00 01 00
08 0x00000000
11 out down n/a 20.069 CLASS_INTERFACE -
11 in up n/a 20.069 CONTROL_TRANSFER 00 c2 01 00 01 00
08 0x00000000
12 out down n/a 20.069 CLASS_INTERFACE 00 c2 01 00 01
00 08
12 out up n/a 50.092 CONTROL_TRANSFER - 0xc0010000
13 out down n/a 50.092 CLASS_INTERFACE -
13 in up n/a 50.112 CONTROL_TRANSFER 0xc0000004
14 out down n/a 50.112 CLASS_INTERFACE -
14 in up n/a 50.112 CONTROL_TRANSFER 0xc0000004
15 out down n/a 50.112 CLASS_INTERFACE -
15 in up n/a 50.112 CONTROL_TRANSFER 0xc0000004
16 out down n/a 50.112 CLASS_INTERFACE b0 04 00 00 01
00 08
16 out up n/a 50.112 CONTROL_TRANSFER - 0xc0000004
17 out down n/a 50.112 CLASS_INTERFACE -
17 in up n/a 50.112 CONTROL_TRANSFER 0xc0000004
18 out down n/a 50.112 CLASS_INTERFACE -
18 out up n/a 50.112 CONTROL_TRANSFER - 0xc0000004
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