Hi, Le Sat, 25 Sep 2010 22:58:31 +0800, Yanjun Luo <[email protected]> a écrit : > I soldered two boards and all of them works!
Congratz! :) > When insert to my laptop, there are two devices appeared > as /dev/ttyUSB0 and /dev/ttyUSB1. It seems that both two ports are > worked as serial ports. Hmm is that normal? I guess the EEPROM needs to be programmed so one port acts as UART and the other as JTAG, no? And does the Linux driver recognize FTDI JTAG ports as serial ports? > What should I do next? Do I need to change or write the driver to > support JTAG download? How can I use urjtag? Does urjtag need a > special driver or does current driver is good enough now? UrJTAG already supports FTDI JTAG adapters, so you should be able to use the stock UrJTAG (check for packages for your Linux distribution) and then run the "detect" command that will show the JTAG identification code of the FPGA. If it works, then you can compile Michael's modified UrJTAG that supports configuration of the FPGA and writing of the board's flash. You can also check the UART functionality with a serial terminal program at 115200 8-N-1 (e.g. GtkTerm), your board is already flashed with MM SoC and it will display debug messages when you power it (if not: press the middle pushbutton to start, newer versions of the SoC require that and I don't remember which one was flashed). Use a *regulated* (+/- 5%) 5V power supply adapter with the positive in the middle. Before connecting, check the voltages on the connectors (JTAG, UART and supply) to be safe... > Also, there is a mechanical problem, the serial port connector (J5) is > higher than JTAG's (J6), so I only can connect serial port, I can't > insert JTAG. I cut the serial port connector J5 and the female > connector on my board a little (about 2mm), then it looks like JTAG > can be connected (although my board looks a little lean), I'll try to > see if it works. Hmm too bad... we'll need to find a clean way to fix this problem, manually cutting each connector will be time consuming and won't look good. > If all the boards are good, I'll solder 5 of them total, I'll keep > one, send one to Wolfgang (Adam?) and three of them to Sebastien. I think Michael will be interested as well; I can cheaply forward him one since we now both live in Germany. Thanks again! S. _______________________________________________ http://lists.milkymist.org/listinfo.cgi/devel-milkymist.org IRC: #milkym...@freenode Twitter: www.twitter.com/milkymistvj
