BTnut Development Tools - Linux USB Access
For 'recent' Linux distributions (e.g., anything with a kernel >= 2.6.12), the CP2101-drivers should already be included as a kernel module. For all other distros, you probably need hunt down a set of recent kernel modules that include
cp2101.c and recompile your kernel.
- Watch the output of var/log/messages, e.g., using
tail -f /var/log/messages
- Connect the BTnode rev3 via the USB prog board to your computer
- In your message window, you should see something like this:
[4660266.083000] usb 5-3.1: new full speed USB device using ehci_hcd and address 5 [4660266.589000] usbcore: registered new driver usbserial [4660266.593000] drivers/usb/serial/usb-serial.c: USB Serial support registered for Generic [4660266.597000] usbcore: registered new driver usbserial_generic [4660266.597000] drivers/usb/serial/usb-serial.c: USB Serial Driver core v2.0 [4660266.612000] drivers/usb/serial/usb-serial.c: USB Serial support registered for CP2101 [4660266.616000] CP2101 5-3.1:1.0: CP2101 converter detected [4660266.649000] usb 5-3.1: reset full speed USB device using ehci_hcd and address 5 [4660266.696000] usb 5-3.1: CP2101 converter now attached to ttyUSB0 [4660266.696000] usbcore: registered new driver CP2101 [4660266.696000] drivers/usb/serial/cp2101.c: Silicon Labs CP2101/CP2102 RS232 serial adaptor driver v0.04 usb.agent: cp2101: loaded successfully
- Notice the line
CP2101 converter now attached to COMPORTabove (in our example:
ttyUSB0). Remember this port (actually, prepend
/dev/in front, e.g.,
/dev/ttyUSB0), as it will be used to connect to the BTnode rev3 subsequently.
- PS: you can stop tailing /var/log/messages now :-)
You can now proceed to upload an application: See 3.3. Upload Sample Application (.hex file) next.