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| 09:04.38 | mbuf | CosmicPenguin, ping! |
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| 13:33.31 | GPSFan | prpplague: ping.. are you looking for ideas for Beagle Board expansion boards? |
| 13:33.43 | prpplague | GPSFan: yep |
| 13:33.53 | prpplague | (royality free of course) |
| 13:34.17 | chouimat | hehe |
| 13:34.21 | chouimat | morning |
| 13:34.49 | GPSFan | prpplague: I've an idea for one, but its success would depend on whether the BB had enough horse power to do the associated processing, the DSP might help. |
| 13:36.16 | GPSFan | prpplague: the idea is a high performance ADC input only board based on: http://www.akm.com/prodfolder-adc.asp?p=AK5394A for use as part of an SDR |
| 13:36.40 | GPSFan | the ADC is I2S and I2C for control |
| 13:38.12 | GPSFan | and could be connected to the BB's McBSP3 and I2C on the expansion board. It would provide an ADC that could do up to 192k which is quite beyond the onboard one. |
| 13:38.54 | GPSFan | prpplague: you might ping on bobkats on #beagle about his beagle brick. |
| 13:39.23 | prpplague | GPSFan: interesting |
| 13:39.25 | GPSFan | The issue is whether the BB could do the required processing to keep up with the 192k sample rate |
| 13:39.35 | prpplague | GPSFan: i was looking into making a board with a fpga on it |
| 13:39.49 | GPSFan | if not the ADC would be somewhat under-utilized. |
| 13:40.28 | GPSFan | prpplague: yeah, an FPGA is a nice way to do sdr, but would probably be a bit more expensive (and capable). |
| 13:40.38 | prpplague | yea |
| 13:41.51 | GPSFan | <PROTECTED> |
| 13:42.08 | prpplague | GPSFan: great, i'll have a look |
| 13:42.29 | prpplague | GPSFan: if we do proto's do you want to beta it? |
| 13:43.15 | GPSFan | the ADC would need level translators and a 3.3V ldo as well as a hand full of op-amps and a xtal osc. But the most important thing is good low noise analog layout. |
| 13:43.36 | GPSFan | yes to the beta. |
| 13:44.04 | prpplague | GPSFan: yea you could prototype it on the breeder board, but i didn't thing i2s is available on the expansion header for the beagle |
| 13:44.28 | GPSFan | look at McBSP3 |
| 13:45.34 | prpplague | GPSFan: ahh will do |
| 13:47.55 | GPSFan | in theory it would support the RX side of an SDR tranciever, with the beagles onboard audio able to support the TX side, since the requirements for TX are somewhat less then on RX. |
| 13:49.29 | prpplague | GPSFan: interesting |
| 13:49.42 | prpplague | GPSFan: well we could do a prototype version using the breeder board |
| 13:49.59 | prpplague | GPSFan: i'd need to double check the McBSP3 lines to make sure we have what we need |
| 13:50.16 | GPSFan | prpplague: yes, the hi quality analog layout could wait untill the concept was verified. |
| 13:51.16 | prpplague | GPSFan: the big question is, how many of these board would i actually sell? |
| 13:51.25 | GPSFan | you will need a 12.288MHZ osc for MCLK of the ADC, an LDO for the 3.3V, and some level translators to go from the 1.8V to 3.3V logic. |
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| 13:53.33 | GPSFan | Well, my Idea is to show the concept with the breadboard then poll the community. bobkatz has done a lot more in terms of looking at how his beagle brick might be used. I view this as part of a more capable beagle brick. |
| 13:53.44 | GPSFan | did you see his slides? |
| 13:54.01 | GPSFan | prpplague: bbiab, gotta run off for a while. |
| 13:54.03 | prpplague | sorry no, |
| 13:54.06 | prpplague | GPSFan: got a url? |
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| 13:55.38 | GPSFan | prp hold on a sec... |
| 13:57.26 | GPSFan | prpplague: the on on beaglebrick at 1:30 --->> http://wiki.omap.com/index.php/ETechDays_Community_Lightning_Talks |
| 13:58.06 | GPSFan | prpplague: oops you may have to ping him for a readable copy, that's in .ppsx which is unreadable by OO. |
| 13:58.13 | prpplague | GPSFan: doh |
| 13:58.36 | GPSFan | I watched it on their web event. |
| 13:58.44 | GPSFan | webex |
| 13:58.48 | GPSFan | bbl |
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| 14:12.27 | prpplague | GPSFan: hmm, looks more pie in the sky that actual work |
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| 15:53.32 | chouimat | prpplague: I should get the devkit8000 later today or tomorrow |
| 15:53.59 | prpplague | chouimat: cool |
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| 16:32.50 | GPSFan | prpplague: back for just a bit... the slides do seem "pie-in-the-sky'ish" however the LCD interface is real and other than the case his design relied on nothing but software and evangelism to bring to life. It depended on the beagle boards on board Ti combo chip for its audio input. only 16 bit and only 48khz. The ADC expansion board would provide 24bit and 48khz, 96khz and 192khz sampling. A double edged sword to be sure sinc with the increased resolution and |
| 16:32.50 | GPSFan | <PROTECTED> |
| 16:34.23 | GPSFan | prpplague: I just read that TCT is working on a general purpose proto board, so I may be able to use that to proto the design. |
| 16:35.08 | GPSFan | bbl |
| 16:45.07 | prpplague | GPSFan: yea thats the breeder board |
| 16:45.13 | prpplague | GPSFan: where did you read that? |
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| 18:17.21 | calculus | an fpga buddy board would be cool for the beagle |
| 18:18.06 | prpplague | calculus: yea, the only question is how many would i sell? |
| 18:18.45 | calculus | well, if it had cool leds and some switches on it, it would make for a neat getting started with fpga board |
| 18:19.01 | calculus | and 7 segment displays |
| 18:19.29 | calculus | http://www.digilentinc.com/Products/Detail.cfm?Prod=NEXYS |
| 18:19.39 | calculus | ^^ is the board I played with when learning vhdl |
| 18:24.23 | calculus | there are boards from technologic systems that have arm cores and fpgas |
| 18:24.54 | calculus | there is definitely a market |
| 18:28.14 | g1powermac_EPC | all i got to say is its a bit interesting soldering above one's head. . . |
| 18:28.38 | g1powermac_EPC | hey prpplague |
| 18:28.58 | prpplague | g1powermac_EPC: hey |
| 18:29.30 | g1powermac_EPC | is fabricating his own under cabinet lighting system |
| 18:29.56 | g1powermac_EPC | using flexible led strips meant to go in cars |
| 18:29.57 | chouimat | is doing noting |
| 18:30.10 | chouimat | err nothing |
| 18:30.22 | g1powermac_EPC | but installing requires soldering upside down |
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| 18:55.12 | eightdot | g1powermac_EPC: might get realy nasty burns if solders above himself .... |
| 18:58.22 | g1powermac_EPC | eightdot: yup, also have to watch for drips of solder hitting the brand new solid surface countertops, don't want that happening |
| 19:00.01 | eightdot | ah |
| 19:00.30 | g1powermac_EPC | gotta say one thing, its really worth the hassle |
| 19:00.33 | eightdot | thats simple to solve with an old newspaper |
| 19:00.46 | g1powermac_EPC | got one segment up and running, works awesome |
| 19:00.52 | eightdot | what color do you use ? |
| 19:00.53 | g1powermac_EPC | works and looks :-) |
| 19:00.59 | g1powermac_EPC | warm white |
| 19:01.07 | eightdot | ah |
| 19:01.20 | eightdot | ok use a couple of them at our boat |
| 19:01.25 | g1powermac_EPC | so it matches the warm light coming off the light light bulbs |
| 19:01.49 | eightdot | ~ 1/10 of the power drain of a 12v tl .. and more and more pleasant light :-) |
| 19:01.51 | g1powermac_EPC | and I can't believe how cheap this added upto |
| 19:02.17 | eightdot | yeah i payd ~15 euro for them |
| 19:02.24 | eightdot | each ... |
| 19:02.29 | g1powermac_EPC | somewhere over $200 for a 16ft roll of this stuff and two hot wire 12v transformers |
| 19:02.58 | g1powermac_EPC | http://www.oznium.com/led-ribbon-roll |
| 19:03.13 | g1powermac_EPC | only $130 for the roll, the transformers weren't cheap |
| 19:03.15 | eightdot | mm thats about the same as i payd i guess |
| 19:03.36 | eightdot | ah yeas that stuff |
| 19:04.41 | g1powermac_EPC | I can't tell you how much it would have cost if I used 'proper' led under cabinet lighting |
| 19:04.51 | chouimat | hehe |
| 19:04.59 | eightdot | iirc i payd ~ 15 euro for ~ 60 cm |
| 19:05.14 | g1powermac_EPC | got about 12ft worth to light up |
| 19:05.37 | g1powermac_EPC | so actually, I still got 4ft of this stuff to use elsewhere |
| 19:05.56 | eightdot | use the rest for another project .. or to have more light at a sertan sport :-) |
| 19:06.31 | eightdot | i stuck that 60 cm i had to the inside of a anchor light .... |
| 19:06.33 | g1powermac_EPC | I might use it to add more lighting under another area of the kitchen, just can't do it yet as I didn't prep the wiring for it |
| 19:06.37 | chouimat | eightdot: it's illegal to play that sport with light on in some states in the usa |
| 19:06.56 | g1powermac_EPC | need to cut a hole in the dining room wall to run the wires |
| 19:07.03 | eightdot | used 1/5 of the power of the old bulp that was inside and gave WAY to much light ... |
| 19:08.05 | eightdot | chouimat: we are only recreational... |
| 19:08.27 | chouimat | hhee |
| 19:09.06 | chouimat | is waiting after the dhl guy |
| 19:09.13 | keesj | :p |
| 19:09.26 | eightdot | we used to have oil lamps .. but my dad got alegic to the oil .. for tha last years we had tl.. but they use a lot of power and only give little and iritating light ... |
| 19:09.41 | eightdot | leds are a good replacement atm |
| 19:11.47 | chouimat | goes do the dishes |
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| 19:43.51 | GPSFan | prpplague: back... might you have any info on the breeder board? btw I saw it refered to in the #beagle IRC archives. |
| 19:47.23 | eightdot | GPSFan: you also have a zcomax 88w8686 board ? |
| 19:48.09 | GPSFan | eightdot: no I have a zipit z2 which has an 8686 connected to the PXA270 cpu via GSPI |
| 19:49.00 | eightdot | ah ok |
| 19:52.49 | eightdot | any chance for a high res/ better contrast version of http://zipit2system.sourceforge.net/images/zipitwireless.jpg |
| 19:53.14 | eightdot | im trying to find a jtag port on the 88w8686 |
| 19:55.40 | GPSFan | eightdot: that's about as good picture as I could get. |
| 19:55.53 | eightdot | mm ok |
| 19:57.47 | eightdot | i think i saw a guestion from you in an irc log that you where looking for reset / PD ? |
| 19:59.06 | GPSFan | eightdot: that was a while ago, I did a bit of ringing out and got the functions identified on the PXA270's gpios. |
| 20:00.32 | eightdot | do you hav eany notes on the 88w8686 pinout ? |
| 20:00.49 | eightdot | i have some .. but there are gaps in it :-( |
| 20:03.30 | GPSFan | eightdot: no, you might ask prpplague, he's done a lot of work with the 8686 and might be able to help. I didn't need anything more than the functions tied to the PXA's gpio's. At ont time I was going to pull all the parts off the z2 cpu board and come up with a schematic, but never got anyone to send me a bricked one. |
| 20:04.04 | eightdot | ah ok |
| 20:05.42 | eightdot | but do you (still) have notes on pin numbers <> functions ? or did you just do pxa-gpio <> 8686 functions ? |
| 20:08.57 | GPSFan | eightdot: let me look, I think I remember that some of the doc's I found on 8686 modules (like the zcomax) had some chip pin numbers referenced. |
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| 20:09.58 | eightdot | i quess you dont have the device open atm ? |
| 20:10.45 | eightdot | i dont know if email is doable bu mine is rs-at-mveas-dot-com |
| 20:13.13 | GPSFan | the picture was taken with the RF shield removed. I have since put it back. ie. soldered down It is not comming off again unless I have a real good reason. |
| 20:15.10 | eightdot | ah ok |
| 20:15.19 | eightdot | i guessed so ... |
| 20:18.03 | GPSFan | eightdot: do you have the datasheet for the z-com XG-182M? |
| 20:19.52 | eightdot | i think so ... |
| 20:23.20 | GPSFan | that has some 8686 chip pin references in it, but it's not complete, that's all I have. |
| 20:23.46 | eightdot | 782290 bytes dsxg182mv5.pdf |
| 20:23.59 | eightdot | ah ok |
| 20:24.13 | eightdot | i alread yhav a little bit more |
| 20:26.15 | eightdot | maybe i should ask them for a schematic ... |
| 20:27.36 | eightdot | that zipitwireless.jpg is the original photo ? |
| 20:42.23 | GPSFan | mine's 160kbytes "XG-182M Product Specification.pdf" |
| 20:46.05 | GPSFan | eightdot: it is cropped slightly, but that's the original res. I have a couple of others of the same area. |
| 20:47.09 | eightdot | ok i would be realy interested in the original pictures of that area .... |
| 20:48.21 | eightdot | and maybe that pdf also |
| 20:48.23 | GPSFan | that's pretty much the best one, the soldermask makes it ral hard to see where the traces go |
| 20:48.38 | GPSFan | s/ral/reak |
| 20:48.46 | GPSFan | s/reak/real |
| 20:48.55 | GPSFan | ;>P |
| 20:49.03 | eightdot | i posted my email above .. otherwize i can see if i can open a ftp account here |
| 20:50.26 | GPSFan | post e-mail again please |
| 20:50.28 | eightdot | or ssh |
| 20:50.31 | eightdot | ok |
| 20:51.10 | eightdot | <PROTECTED> |
| 20:59.45 | GPSFan | eightdot: sent |
| 21:01.14 | eightdot | many thanks :-) |
| 21:02.06 | eightdot | i see you uncovered some 'soldermask-overed' test point to the main cpu ? |
| 21:03.10 | GPSFan | yes, those were the spi connection and some gpio's |
| 21:03.34 | GPSFan | I had a scope on the spi lines at one time tracking down a driver issue. |
| 21:05.52 | eightdot | ah so that are via's ? |
| 21:07.07 | eightdot | the pictures are slightly beter 'readable' than the online one ... |
| 21:07.39 | eightdot | especialy when i combine knowledge from them .. will do that tomorrow or later this week ... |
| 21:08.30 | eightdot | i have abot 30 pins that i know .. 10 that i think i know but not shure .. and 20 that i dont know what they are ... |
| 21:09.10 | eightdot | if this pictures can help find another 5..10 or give a hint at at a group which might be jtag im golden :-) |
| 21:11.34 | eightdot | have a good night or whatever part of the day you guys are at ... 23:25 aka bedtime here |
| 21:15.02 | GPSFan | eightdot: good luck finding the rest of the pins, I'm sure others will be interested. |
| 21:15.31 | eightdot | yeah i guess so ... |
| 21:15.45 | eightdot | next step is register docs .... |
| 21:35.06 | chouimat | yes the device finally got here |
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