Hm, spec for fpga is here: http://www.latticesemi.com/documents/HB1004.pdf
Not too shabby. It's a small FPGA, but good for glue. Almost everyone who does embedded stuff needs some external glue logic to interface with the real world. This is a nice way to eliminate external hardware and still allow customization. 5k of clb's is probably enough to make a custom serial interface, or custom parallel, or custom timer or custom whatever interface. No idea how hard the toolflow is to use, but the price is nice. Greg > Look at the TS-7500, about $100, full Debian Linux on ARM with an FPGA > wrapped around it. Default FPGA load is 8 serial ports, alternate loses 4 > serial to get CANbus, code is open source so you can hack your own FPGA > build. > > * > Drew Van Zandt > Cam # US2010035593 (M:Liam Hopkins R: Bastian Rotgeld) > Domain Coordinator, MA-003-D. Masquerade aVST > * > > > On Mon, Mar 25, 2013 at 11:07 PM, Tom Metro > <[email protected]>wrote: > >> [email protected] wrote: >> > The Raspberry PI has a good amount of processing, but lacks the I/O >> > to do what the arduino can do. >> >> Not disagreeing, but what sort of I/Os have you wanted that it didn't >> have? >> >> While you can add I/O expanders, like the Gertboard (see list archives), >> last I saw pricing it was $46, so it adds significantly to the project >> cost. >> >> You would think they would have beefed up the native I/O on the Pi, >> given it was made for hacking, but I guess the educational projects they >> envisioned for it didn't involve that much low-level hardware >> interaction, or at least not enough to justify impacting their $35 >> target price. (Their vision seemed to be more about letting each kid >> have their own computer on which to hack software. Not so much about >> hardware interfacing.) >> >> The interesting thought experiment is what would it have added to the >> price to make the Pi Arduino shield compatible, as you suggest. For a >> little bit more product cost, it would reduce the cost of expansion. >> >> There are other ARM-based boards with better I/O and similar performance >> capable of running a full Linux, but you'll pay more than $35, and >> you'll have a much smaller supporting community. >> >> -Tom >> _______________________________________________ >> Hardwarehacking mailing list >> [email protected] >> http://lists.blu.org/mailman/listinfo/hardwarehacking >> > _______________________________________________ > Hardwarehacking mailing list > [email protected] > http://lists.blu.org/mailman/listinfo/hardwarehacking > -- _______________________________________________ Hardwarehacking mailing list [email protected] http://lists.blu.org/mailman/listinfo/hardwarehacking
