Hi This is a Digital Radio which can report some data through USB to its application. The output of lsudb : Bus 002 Device 004: ID 238b:0a31 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 254 bDeviceProtocol 254 bMaxPacketSize0 8 idVendor 0x238b idProduct 0x0a31 bcdDevice 0.00 iManufacturer 1 iProduct 2 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 39 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 4mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 255 Vendor Specific Subclass bInterfaceProtocol 255 Vendor Specific Protocol iInterface 5 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 255 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 255
---------------------------------- output od dmesg: [26785.637159] usb 2-2.1: new full-speed USB device number 11 using uhci_hcd [26785.748010] usb 2-2.1: config 1 has an invalid interface number: 2 but max is 0 [26785.748018] usb 2-2.1: config 1 has no interface number 0 [26785.759058] usb 2-2.1: New USB device found, idVendor=238b, idProduct=0a31 [26785.759064] usb 2-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [26785.759069] usb 2-2.1: Product: Digital Radio [26785.759073] usb 2-2.1: Manufacturer: RIGOL Communications this device has a SDK for developing in windows but there isnt any in Linux. i know protocol specification of message, and try sniffing on windows verify protocol. but when send a same data in Linux(with pyusb) to device dosent response. i guess there is a initial handshake in driver layer between device and OS. 2013/6/10 Greg KH <gre...@linuxfoundation.org>: > On Mon, Jun 10, 2013 at 01:01:15AM +0430, Mahdi Razavi wrote: >> Hi >> I am mahdi. >> i want to communicate with a radio over USB. creator of this radio >> only support windows driver for communicate, but i want to have >> connection in Linux. > > What device is this exactly? What is the output of 'lsusb -v' with it > plugged in? > >> i have a SDK for windows and protocol specification of this device and >> do some sniffing USB port on connection in windows. >> may you help me how to have connection with this device in Linux? >> or how can i write a driver for this device in Linux? > > What type of interface to userspace do you need for this device? Can it > be a "dumb" serial-like interface that you send it AT modem commands? > Or do you need to do other stuff with it? > > What about just using libusb to talk directly to it from your program > from userspace, no kernel driver is needed for that. > > thanks, > > greg k-h -- Best Regards M.Razavi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html