I'm trying to work with a CDC-ACM device which has five
end-points.
The three first ones are the regular Notification + Data and the other
two are proprietary end-points, for transferring some binary data.
The device has no Linux driver (only windows).
If I compile the device to have only 3 end-points, everything works
fine:
T: Bus=01 Lev=01 Prnt=01
Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 1.01 Cls=02(comm.) Sub=00 Prot=00 MxPS=16 #Cfgs=
1
P: Vendor=xxxx ProdID=xxxx Rev= 0.00
S: Manufacturer=xxxxxxxxxxxxxxxxxxx
S: Product=xxxxxxxxxxxxxxxxxxxxxxxxxx
S: SerialNumber=Serial Number
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#=
0 Alt= 0 #EPs= 1
Cls=02(comm.)
Sub=02 Prot=01 Driver=(acm)
E:
Ad=81(I)
Atr=03(Int.) MxPS= 16 Ivl= 32ms
I: If#=
1 Alt= 0 #EPs= 2
Cls=0a(data
) Sub=00 Prot=00
Driver=(acm)
E: Ad=8a(I)
Atr=02(Bulk) MxPS= 64
Ivl= 0ms
E:
Ad=0b(O)
Atr=02(Bulk) MxPS= 64 Ivl= 0ms
But if I compile it to work with all of the end-points the ACM
driver doesn't load:
T: Bus=01 Lev=01 Prnt=01
Port=00 Cnt=01 Dev#= 11 Spd=12 MxCh= 0
D: Ver= 1.01 Cls=02(comm.) Sub=00 Prot=00 MxPS=16 #Cfgs=
1
P: Vendor=xxxx ProdID=xxxx Rev= 0.00
S: Manufacturer=xxxxxxxxxxxxxxxx
S: Product=xxxxxxxxxxxxxx
S: SerialNumber=Serial Number
C:* #Ifs= 3 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#=
0 Alt= 0 #EPs= 1
Cls=02(comm.)
Sub=02 Prot=01 Driver=(none)
E: Ad=81(I)
Atr=03(Int.) MxPS= 16
Ivl=128ms
I: If#=
1 Alt= 0 #EPs= 2
Cls=0a(data
) Sub=00 Prot=00
Driver=(none)
E:
Ad=8a(I)
Atr=02(Bulk) MxPS= 64 Ivl= 0ms
E:
Ad=0b(O)
Atr=02(Bulk) MxPS= 64
Ivl= 0ms
I: If#=
2 Alt= 0 #EPs= 2
Cls=ff(vend.)
Sub=ff Prot=ff Driver=(none)
E:
Ad=83(I)
Atr=02(Bulk) MxPS= 64
Ivl= 0ms
E:
Ad=06(O)
Atr=02(Bulk) MxPS= 64 Ivl= 0ms
I'm compiling exactly the same
source code in both cases, changing only the "Number of avail
interfaces" parameter between 2 and 3.
What I wanted was that the ACM driver will recognize the device as a
modem.
I REALLY need some help here...
Is it possible to have an ACM device with more then 3 end-points?
(According to the spec. it should work fine).
Should I change anything in the ACM driver in-order for the modem to work
fine?
Thanks in advance,
--Gilad
