Hi Christo, this is probably caused by permission problems. Try with sudo, if it works you probably don't have permission to access the device. Search for "ftdi udev" on the search engine of your choise and you should find plenty of info.
Best regards, Fabian Am 20.10.20 um 17:45 schrieb Christo Crause: > I'm a relatively new user of sigrok/PulseView and ran into an issue > trying to use an FT232H on an Adafruit breakout board. When scanning > for FDTI devices (see output below) it gives the following error (which > seems to be similar to this bug report: > https://sigrok.org/bugzilla/show_bug.cgi?id=1316). The key error seems > to be "Failed to get the FTDI strings", while the lsusb output seems to > indicate a problem listing certain descriptors such as iManufacturer, > iProduct etc. > > Any guidance on how to fix this would be appreciated. > > I can successfully connect to and pull data from a Rigol scope. > > sudo sigrok-cli -l 5 -d ftdi-la --scan > sr: [00:00.000000] log: libsigrok loglevel set to 5. > sr: [00:00.000077] backend: libsigrok 0.5.0/4:0:0 (rt: 0.5.0/4:0:0). > sr: [00:00.000165] backend: Libs: glib 2.54.1 (rt: 2.56.4/5604:4), > libzip 1.1.2, libserialport 0.1.1/1:0:1 (rt: 0.1.1/1:0:1), libusb-1.0 > 1.0.21.11156, libftdi 1.3. > sr: [00:00.000200] backend: Host: x86_64-pc-linux-gnu, little-endian. > sr: [00:00.000225] backend: SCPI backends: TCP, RPC, serial, USBTMC. > sr: [00:00.000286] backend: Sanity-checking all drivers. > sr: [00:00.000322] backend: Sanity-checking all input modules. > sr: [00:00.000344] backend: Sanity-checking all output modules. > sr: [00:00.000368] backend: Sanity-checking all transform modules. > srd: libsigrokdecode loglevel set to 5. > sr: [00:00.017041] ftdi-la: Number of FTDI devices found: 1 > sr: [00:00.018366] ftdi-la: Failed to get the FTDI strings: -7 > sr: [00:00.018475] hwdriver: Scan of 'ftdi-la' found 0 devices. > > sudo lsusb -v -d0x0403: > > Bus 001 Device 006: ID 0403:6014 Future Technology Devices > International, Ltd FT232H Single HS USB-UART/FIFO IC > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > idVendor 0x0403 Future Technology Devices International, Ltd > idProduct 0x6014 FT232H Single HS USB-UART/FIFO IC > bcdDevice 9.00 > iManufacturer 1 (error) > iProduct 2 (error) > iSerial 3 (error) > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 32 > bNumInterfaces 1 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0x80 > (Bus Powered) > MaxPower 100mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 255 Vendor Specific Class > bInterfaceSubClass 255 Vendor Specific Subclass > bInterfaceProtocol 255 Vendor Specific Protocol > iInterface 2 (error) > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0200 1x 512 bytes > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x02 EP 2 OUT > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0200 1x 512 bytes > bInterval 0 > Device Qualifier (for other device speed): > bLength 10 > bDescriptorType 6 > bcdUSB 2.00 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > bNumConfigurations 1 > Device Status: 0x0000 > (Bus Powered) > > Best regards, > Christo > > > _______________________________________________ > sigrok-devel mailing list > sigrok-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sigrok-devel > _______________________________________________ sigrok-devel mailing list sigrok-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sigrok-devel
