Hello all
I am using a usb device that send incremented value sent by driver.
I have writtern a driver for that. but i am facing some problem
can some one suggest some solution for them.
I am sending a whole procedure that i am doing...
I have compiled the driver and copied .o file in
/lib/modules/2.4.5/kernel/drivers/usb/
* Initially when device is not connected.
root@neptune:/home/USB# cat /proc/bus/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB UHCI Root Hub
S: SerialNumber=1000
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
*when i connect device to it following message came...
root@neptune:/home/USB# cat /proc/bus/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB UHCI Root Hub
S: SerialNumber=1000
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 5 Spd=1.5 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0925 ProdID=1234 Rev= 1.00
S: Manufacturer=Microchip
S: Product=Pic16C765 USB Mouse
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 26mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=hid
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl= 10ms
*Konsole message.....
hub.c: USB new device connect on bus1/1, assigned device number 5
usb.c: USB device 5 (vend/prod 0x925/0x1234) is not claimed by any active driver.
usb.c: registered new driver hid
usb-uhci.c: interrupt, status 3, frame# 1911
input0: USB HID v1.00 Device [Microchip Pic16C765 USB Mouse] on usb1:5.0
hid.c: v1.16 Andreas Gal, Vojtech Pavlik <[EMAIL PROTECTED]>
hid.c: USB HID support drivers
* It has not found my driver ...
but i have writtern following code in my driver file...
if ( !( ( dev->descriptor.idVendor == 0x925 ) && ( dev->descriptor.idProduct ==
0x1234 ) ) )
{
printk(KERN_INFO "Returning NULL\n");
return NULL;
}
* Next step i have inserted my module first and then connect the device
before doing this i have removed loaded module hid and input.
Then it recognize my driver. the message comes... is
root@neptune:/home/USB/test# cat /proc/bus/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB UHCI Root Hub
S: SerialNumber=1000
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 8 Spd=1.5 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0925 ProdID=1234 Rev= 1.00
S: Manufacturer=Microchip
S: Product=Pic16C765 USB Mouse
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 26mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=ADC_Driver
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl= 10ms
and message on konsole is ...
-------------------------------
hub.c: USB new device connect on bus1/2, assigned device number 8
driver.c: Enter in usb_adc_probe function
Length = 18
DescriptorType = 01
USB version = 1.10
Vendor:Product = 0925:1234
MaxPacketSize0 = 8
NumConfigurations = 1
Device version = 1.00
Device Class:SubClass:Protocol = 00:00:00
Per-interface classes
****usb1:8.0
The value of the context is 10
driver.c: Exit from usb_adc_probe function
usb.c: registered new driver hid
hid.c: v1.16 Andreas Gal, Vojtech Pavlik <[EMAIL PROTECTED]>
hid.c: USB HID support drivers
QUESTION :
-----------
* Can you tell me the reason for this behaviour...
QUESTION 2 :
I have created a node using mknod /dev/usb/adc c 180 65
but still in the lsmod it is not showing my driver is using by
some device...
and i am not able to open the device...
Waiting for your valuable suggation...
Pankaj.
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