Teensy 3 connected on RPi - no serial device available

[michu]

Hey

I tried to connect my Teensy 3 on the RPi... however no device pops up on the RPi. Any hints how to resolve this? here are some details:



uname:
Linux pixelmonster 3.6.11+ #538 PREEMPT Fri Aug 30 20:42:08 BST 2013 armv6l GNU/Linux

Dmesg:
[ 2.708902] usb 1-1.3: new full-speed USB device number 5 using dwc_otg
[ 2.827502] usb 1-1.3: New USB device found, idVendor=16c0, idProduct=0483
[ 2.838701] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.843362] usb 1-1.3: Product: USB Serial
[ 2.847832] usb 1-1.3: Manufacturer: Teensyduino
[ 2.867479] usb 1-1.3: SerialNumber: 5788

lsusb -v:
Bus 001 Device 005: ID 16c0:0483 VOTI Teensyduino Serial
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 2 Communications
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x16c0 VOTI
idProduct 0x0483 Teensyduino Serial
bcdDevice 1.00
iManufacturer 1 Teensyduino
iProduct 2 USB Serial
iSerial 3 5788
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 67
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 1 AT-commands (v.25ter)
iInterface 0
CDC Header:
bcdCDC 1.10
CDC Call Management:
bmCapabilities 0x01
call management
bDataInterface 1
CDC ACM:
bmCapabilities 0x06
sends break
line coding and serial state
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 64
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
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 0
Device Status: 0x0000
(Bus Powered)

[PaulStoffregen]

Maybe the kernel doesn't have the cdc_acm driver? It's certainly able to see the device from "lsusb -v".

Try looking at syslog (on Ubuntu it's /var/log/syslog... so start there, but RPi might log is somewhere else). The syslog messages should show kernel info about detecting devices and loading drivers. There's also some way to find out what drivers the kernel has, but I'm not sure how to do that. Maybe someone else knows, or you can find by searching? The driver you need is cdc_acm.

[michu]

thanks paul, yes a "sudo modprobe cdc_acm" resolved this issue... maybe I should take a nap!

cheers