Congratulations on finally fixing the sleep bug! Cheers! Arsenijs
13.01.2019, 00:00, "Mychaela Falconia" <mychaela.falco...@gmail.com>: > Hello FreeCalypso community, > > I am overjoyed to announce that our FCDEV3B V2 boards are finally here: > last night I have tested the first batch of 8 boards which I picked up > from Technotronix on Thursday. Here are the findings: > > Yield: out of the total of 8 boards in this batch, 5 are good and 3 > have defects. Out of the 3 defective boards, one has perfectly working > RF but is unable to talk to the SIM in the socket, while the other two > have RF defects: one has totally dead RF (both Rx and Tx, all 3 bands), > the other exhibits a bad Rx path for the low band, but the rest works. > In the case of the board on which only the SIM interface doesn't work, > we have previously encountered the same symptoms in one of our earlier > FCDEV3B V1 batches, and replacing the SIM socket made it work, hence I > am going to try the same on this board. In the case of the two boards > with different RF defects, I will have a discussion with Technotronix > about failure analysis. But even if we are not able to fix any of > those 3 defective boards, we still have 5 perfectly good ones from > this batch. > > V2 changes: unlike our previous FCDEV3B V1 boards, these new V2 boards > have perfectly working sleep while keeping our high-capacity Spansion > S71PL129NC0HFW4B flash+pSRAM chip! Thus we now have proof that my > innovative (not from TI, not from OM, not from Pirelli) flash reset > circuit change is working as I intended. With my recent changes to > the firmware we have regained flash chip type autodetection, thus we > can now populate either this big Spansion flash+pSRAM chip or the > smaller Samsung flash+RAM chip that was used by Openmoko and have the > same fw build work with both, but for our development boards we are > keeping the big version for the obvious reason: large flash and RAM > capacity is very handy for development. If anyone ever pays for the > development of a commercial FreeCalypso modem module in a small SMT > form factor, that version can use the smaller memory capacity more > appropriate for a production modem. > > Out of the 5 defect-free boards in this batch, the availability is as > follows: one board I need to keep for myself, one more board is > earmarked for Rafael (Rhizomatica), and the other 3 are now available > for commercial users at the regular price of $500 USD each. If the > latter 3 boards are not bought quickly by the people I have in mind, > at least one of them will be reallocated to FreeCalypso marketing > outreach purposes: I would like to offer a free board to anyone from > the ofono developer community who would be willing to get our FC modem > product family properly supported in ofono. Aside from the 3 defective > boards which may or may not be repairable, I still have 3 unpopulated > PCB panels, enough for 12 more boards before needing another PCB fab > run - but I will need to do a thorough round of failure analysis with > Technotronix before we assemble that next batch. > > The next steps for me are: > > * I need to add the new sleep mode configuration I mentioned before, > the one that enables big and small sleep, but not deep sleep, for > those users who would rather not be burdened with making their host > interface software sleep-aware, and who are willing to live with > greater power draw in return for interface simplicity - engineering is > all about trade-offs and compromises. > > * I need to test one of those 8 ohm 0.5 W speakers I bought from > SparkFun and see if they perform as well as the similar-looking > unknown-origin speaker that was donated to me by a member of my local > LUG. If these SparkFun speakers work well, I'll be able to recommend > them as an official choice for FCDEV3B lab bench setups, otherwise I > will have to go back on the hunt for a suitable speaker. > > * I will need to write a sleep-aware userspace implementation of the > GSM 07.10 MUX (which our FC modem supports) to serve as an exerciser > for this feature of our modems, and add it to our FC host tools suite. > > * Once all of the above are done, I will need to make an updated > version of the user's manual for the FCDEV3B, and only then the > current iteration of our modem product development will be considered > complete. > > * After all of the above, I will need to get back to the project of > bringing up my BeagleBoard-xM and interfacing it to our FCDEV3B, for > the purpose of exercising digital voice over MCSI and making it work. > If anyone else has a need for this digital voice interface and has > something else (othen than BB-xM) to connect to it for testing, feel > free to beat me to it! > > Hasta la Victoria, Siempre, > Mychaela aka The Mother > _______________________________________________ > Community mailing list > Community@freecalypso.org > https://www.freecalypso.org/mailman/listinfo/community _______________________________________________ Community mailing list Community@freecalypso.org https://www.freecalypso.org/mailman/listinfo/community