Linux and MicroHAM USB3

Project Scope

Recently I purchased a microHAM USB 3 interface which is supposed to work with our Kenwood TS-870S. It is supposed to be used from our RaspberryPi3 club station computer.

Since we do not use Windows but Linux all the way, and since there is no really good documentation how to get it up and running, here is my collected experience.

Implementation

The advantage of the microHAM USB 3 ist that it does not require an additional sound card and it is thus perfectly suited for operation with the Raspberry Pi.

In order to access all the devices on it, you first need to make sure to load the according USB sound support. This is what should come up in /var/log/syslog:

Jan 20 19:13:56 db0rc kernel: [  769.401659] usb 1-1.2: new full-speed USB device number 8 using dwc_otg
Jan 20 19:13:56 db0rc kernel: [  769.505056] usb 1-1.2: New USB device found, idVendor=0451, idProduct=2036
Jan 20 19:13:56 db0rc kernel: [  769.505080] usb 1-1.2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
Jan 20 19:13:56 db0rc kernel: [  769.505093] usb 1-1.2: Product: General Purpose USB Hub
Jan 20 19:13:56 db0rc kernel: [  769.508555] hub 1-1.2:1.0: USB hub found
Jan 20 19:13:56 db0rc kernel: [  769.509162] hub 1-1.2:1.0: 2 ports detected
Jan 20 19:13:57 db0rc kernel: [  769.781652] usb 1-1.2.1: new full-speed USB device number 9 using dwc_otg
Jan 20 19:13:57 db0rc kernel: [  769.903735] usb 1-1.2.1: New USB device found, idVendor=08bb, idProduct=29c2
Jan 20 19:13:57 db0rc kernel: [  769.903759] usb 1-1.2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jan 20 19:13:57 db0rc kernel: [  769.903773] usb 1-1.2.1: Product: USB AUDIO  CODEC
Jan 20 19:13:57 db0rc kernel: [  769.903785] usb 1-1.2.1: Manufacturer: BurrBrown from Texas Instruments
Jan 20 19:13:57 db0rc kernel: [  769.908294] input: BurrBrown from Texas Instruments USB AUDIO  CODEC as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2.1/1-1.2.1:1.3/0003:08BB:29C2.0002/input/input1
Jan 20 19:13:57 db0rc kernel: [  769.962201] hid-generic 0003:08BB:29C2.0002: input,hidraw0: USB HID v1.00 Device [BurrBrown from Texas Instruments USB AUDIO  CODEC] on usb-3f980000.usb-1.2.1/input3
Jan 20 19:13:57 db0rc mtp-probe: checking bus 1, device 9: "/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2.1"
Jan 20 19:13:57 db0rc mtp-probe: bus: 1, device: 9 was not an MTP device
Jan 20 19:13:57 db0rc kernel: [  770.041660] usb 1-1.2.2: new full-speed USB device number 10 using dwc_otg
Jan 20 19:13:57 db0rc kernel: [  770.170491] usb 1-1.2.2: New USB device found, idVendor=0403, idProduct=eeef
Jan 20 19:13:57 db0rc kernel: [  770.170505] usb 1-1.2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jan 20 19:13:57 db0rc kernel: [  770.170512] usb 1-1.2.2: Product: USB Interface III
Jan 20 19:13:57 db0rc kernel: [  770.170518] usb 1-1.2.2: Manufacturer: microHAM
Jan 20 19:13:57 db0rc kernel: [  770.170524] usb 1-1.2.2: SerialNumber: U30LEVBP
Jan 20 19:13:57 db0rc kernel: [  770.178590] ftdi_sio 1-1.2.2:1.0: FTDI USB Serial Device converter detected
Jan 20 19:13:57 db0rc kernel: [  770.178699] usb 1-1.2.2: Detected FT232RL
Jan 20 19:13:57 db0rc kernel: [  770.179482] usb 1-1.2.2: FTDI USB Serial Device converter now attached to ttyUSB0
Jan 20 19:13:57 db0rc mtp-probe: checking bus 1, device 10: "/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2.2"
Jan 20 19:13:57 db0rc mtp-probe: bus: 1, device: 10 was not an MTP device