Hi, the original source of serjtag seems to be http://www.nmj.sumomo.ne.jp/suz-avr/serjtag/. Latest version is http://www.nmj.sumomo.ne.jp/suz-avr/serjtag/avrdude-serjtag04n.zip.
There you can find also the USB910A which is mentioned in the avr910/usb910 patches contained in serjtag-0.3.zip (http://www.nmj.sumomo.ne.jp/suz-avr/USB910A.pdf and http://www.nmj.sumomo.ne.jp/suz-avr/usb910-0.6.zip) René -----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]] Im Auftrag von René Liebscher Gesendet: Dienstag, 17. Januar 2012 08:24 An: 'David Harris'; 'Rene Liebscher' Cc: [email protected]; 'Roger Wolff' Betreff: Re: [avrdude-dev] [bug #30559] Ft232 bit-bang support Hi, on the mentioned web page only the ft232/245 bit bang mode is used. But I had a closer look in the linked serjtag-0.3.zip. The serjtag is an ft245r which is connected to an attiny2313 in parallel mode. And this attiny implements a protocol to write/read SPI data. The SPI data are connected to lines named the usual JTAG names, so its primary purpose is obviously to be used as JTAG debugger. But as ISP is also SPI it can be used for this purpose too. From avrdudes point of view it implements a serial protocol (which goes over USB to the FT245r and over parallel to the attiny, so it is probably faster than any real serial connection in between) The ft245r patch was later added on a patched avrdude (which already had added the serjtag patch). So everyone who wanted to use the ft245/233r bitbang mode had always downloaded the serjtag patch too. And at putting the the patch in avrdudes patch tracker, the two different patches became one. So if you really have this serjtag programmer for testing we can add it with this patch, otherwise we should left it out and may be move it in a separate patch. Kind regards René Liebscher _____ Von: [email protected] [mailto:[email protected]] Im Auftrag von David Harris Gesendet: Dienstag, 17. Januar 2012 01:58 An: Rene Liebscher Cc: Rene Liebscher; Roger Wolff; Joerg Wunsch; [email protected] Betreff: Re: [bug #30559] Ft232 bit-bang support Hi-- I think sertag is referring to this Arduino project: http://www.geocities.jp/arduino_diecimila/bootloader/index_en.html Explanation: Arduinos usually use a serial bootloader to load 'Sketches' into the hardware. However, in the unfortunate event that the bootloader is damaged, the user is forced to use ICSP (in circuit serial programming) or high-voltage programming. This involves additional hardware. Fortunately, many Arduino boards use the FT232RL for usb-serail, and with a little jumpering, this can be used to program the raw mpu. Some boards, eg the LEDuino (www.siliconrailway.com), have hardware that connects the appropriate FT232RL lines to the ICSP. I have the resources to test the patch, and would be glad to do so. David Harris On Mon, Jan 16, 2012 at 12:44 PM, Rene Liebscher <[email protected]> wrote: Follow-up Comment #8, bug #30559 (project avrdude): I think we should left out serjtag, until anybody comes up with references what this programmer is and is willing to test it. _______________________________________________________ Reply to this item at: <http://savannah.nongnu.org/bugs/?30559> _______________________________________________ Nachricht geschickt von/durch Savannah http://savannah.nongnu.org/ _______________________________________________ avrdude-dev mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/avrdude-dev _______________________________________________ avrdude-dev mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/avrdude-dev
