2011/3/31 David Reyes Samblas Martinez <[email protected]>: > 2011/3/31 Werner Almesberger <[email protected]>: >> David Reyes Samblas Martinez wrote: >>> Werner it should be not better to program bootloader and firmware at >>> once, from the atusb-pgm , instead of having to flash and then upload >>> firmware? >> >> You can do that, but it will take about 8 times as long with the >> current avrdude, and still twice as long if we change avrdude to >> "perfecly" optimize the upload. (1) >> >> Flashing 4 kB via DFU takes maybe 1-2 seconds, as opposed to ~15 s >> with avrdude. You need to connect it to a PC for testing anyway, >> so if you flashed everything in one go, you'd just spend something >> like an extra hour ((2), best-case) pushing pogo pins, plus >> someone else would have to spend a day or so teaching avrdude >> better table manners. >> >> (1) The original avrdude flashes from address 0 to the highest >> address used. With my skip-low-addr.patch, it flashes from >> the lowest to the highest address used. Application and boot >> loader are both around 4 kB and live at opposite extremes of >> the 32 kB Flash. >> >> (2) Calculating 135 units, 90% yield, 70% success ratio for >> Flashing (you'll not hit the pads or slip off every so often) >> 15 seconds each would be 43 minutes. As you grow bored and/or >> annoyed, your failure rate will go up ... > I have an idea to enhance your atusb-prg, improving the atusb end with > a clamp , to not need to maintain my hand occupied holding the cable. > this should be enough , also I want to separate process, flashing from > testing, to do one process at time. for the first ~100 units batch, > one nanonote would be enough and 15s isn't enormous amount of time and > , unplug plug to a pc flash, and change to test will also consume some > seconds. but if the flashing and testing are separated, one person can > flash meanwhile other is testing already flashed . > > Also if all flashing is done in one step , and the demand requires > more prodution ratios, I have in mind to do a "flashing machine" with > bare NN boards(Wolfgang please quote me 40 of this, please to have an > idea of costs) (minimum as many as atusbs in a panel (30-40)with a > powered usbhub mess and atusb-prg cables inside :P ,all NN with a > diferent IP and a script on a pc sshing comands to those NN to flash > in paralles all atusbs of the panel) so 30-40 in 15s is also a good > ratio for me :), > > So please let me insist in showme the way to flash bootloader and > program at once even with actual avr-dude (also usefull for me to be > able to flash arduino sketches with arduino bootloader ) and make me > happy ... please[1] > > [1]http://3.bp.blogspot.com/_tetAl-ZL_ig/TAwKgihmiRI/AAAAAAAAALQ/7ZlwJ1WG49w/s1600/lgfp1425%2Bpuss-in-boots-sad-eyes-shrek-2-poster.jpg >> - Werner Well seesm than finally I will only need 10 bare NN boards for my flashing machine :)
>> >> _______________________________________________ >> Qi Hardware Discussion List >> Mail to list (members only): [email protected] >> Subscribe or Unsubscribe: >> http://lists.en.qi-hardware.com/mailman/listinfo/discussion >> > > > > -- > David Reyes Samblas Martinez > http://www.tuxbrain.com > Open ultraportable & embedded solutions > Ben NanoNote, Arduino, Openmoko > Hey, watch out!!! There's a linux in your pocket!!! > -- David Reyes Samblas Martinez http://www.tuxbrain.com Open ultraportable & embedded solutions Ben NanoNote, Arduino, Openmoko Hey, watch out!!! There's a linux in your pocket!!! _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
