In the previous mail [1], I described how to update the application running on the atusb board. Now, if you don't like all this plugging and unplugging, there's a more dignified way to run dfu-util, provided that atusb contains a working firmware.
In case the atusb application is broken to the point that atusb does not enumerate after the boot loader or for some other reason fails to respond to commands, you need to follow the procedure in [1]. Now, in addition to the prerequisites from [1], you need the following software on the PC: - atrf-reset - usbwait (optional) You may already have these tools (they're part of the whole bundle of tools that come with the ben-wpan project). If not, you can build them from sources as follows: - clone the ben-wpan and the f32xbase project: git clone git://projects.qi-hardware.com/ben-wpan.git git clone git://projects.qi-hardware.com/f32xbase.git - build the ben-wpan diagnostic and maintenance tools: cd ben-wpan/tools make - install them under /usr/local/ make install or just run whichever tool you want from its directory. E.g., atrf-reset would be in tools/atrf-reset/ This gives you atrf-reset and usbwait. atrf-reset can send a reset command to the microcontroller in atusb. Instead of unplugging and re-plugging, you would just run these commands (with atusb plugged into the PC): atrf-reset -a sleep 1 dfu-util -d 20b7:1540 -D atusb.bin atrf-reset reports an error because the microcontroller resets immediately, without even acknowledging the reset command. The one second sleep is a rough approximation of the time it takes to enumerate. A more precise method for catching the right moment would be to run usbwait, which first waits for the device to disappear from the USB bus, and then waits for it to reappear: atrf-reset -a usbwait -r -i 0.01 -t 5 20b7:1540 dfu-util -d 20b7:1540 -D atusb.bin The -i option sets the amount of time - in seconds - usbwait waits between attempts to find the device. -t sets the timeout until usbwait gives up. These commands can also be found in the target "update" of http://projects.qi-hardware.com/index.php/p/ben-wpan/source/tree/master/atusb/fw/Makefile [1] http://lists.en.qi-hardware.com/pipermail/discussion/2011-May/008006.html - Werner _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
