build your own cross-compiler !!!

Products & Technology DSO Nano
22

I’ve been investigating about DFU mode, in order to do a full Linux build.
The command dfutool from bluez-utils seems almost what is needed,
but fails at the end:

ant9000@sirius:~/dfu$ lsusb 
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 005: ID 0483:df11 SGS Thomson Microelectronics 
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

So my Nano is attached on bus 3, let’s try to flash it:

# dfutool -d /dev/usbmon3 upgrade DS0201_LIB_V2.5.dfu 
Filename	DS0201_LIB_V2.5.dfu
Filesize	20095
Checksum	42c9c2e9 (valid)

Available devices with DFU support:

	 1) Bus 003 Device 009: ID 0483:df11 Interface 0

Select device (abort with 0): 1

After loading for a while, the tool says it is finalizing, but bails out
with the message

Can't send final block: Broken pipe (32)

Still need to investigate what is the meaning of this, but definitely the upload is
not finalized - no trace of it when rebooting the scope.

This thread is interesting:
http://www.spinics.net/lists/linux-bluetooth/msg01967.html
Source code for dfutool:
http://git.kernel.org/?p=bluetooth/bluez.git;a=blob_plain;f=tools/dfutool.c;hb=HEAD

Antonio