#avr | Logs for 2014-12-05

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[03:27:50] <Trieste> no
[04:29:02] <Timmy> what is the fastest avr programmer?
[04:29:22] <Timmy> I've a usbasp but it's really slow
[04:31:18] <Fleck> you can change usbasp speed usually
[04:32:31] <Timmy> Fleck: how? there is a jumper on its broad which says slow and fast and it is on fast pin.
[04:33:34] <Timmy> but anyway, what is the fastest one?
[04:33:48] <Fleck> check avrdude options
[04:53:39] <LeoNerd> HVPP probably has a faster bytes/sec transfer speed, but the operation as a whole may be slower due to it not being in-circuit
[06:50:20] <rootB> is Rue here
[06:51:44] <Lambda_Aurigae> rue is always here...he just isn't all here all the time.
[06:53:03] <Tom_itx> ever
[08:50:16] <rue_bed> :P
[09:36:35] <rue_more> rootB, no
[10:13:34] <malinus> WHERE IS RUE???
[11:04:43] <TechChristoph_> Morning
[11:11:52] <Jartza> evening
[11:15:21] <tunixbsd> someone know how to change the pin state on avr-gdb runing in simulavr or in simavr ?
[13:46:16] <apo_> I'm writing the host firmware, and the first byte it receives from the client is a 0x01... but that's the /second/ byte sent
[18:26:28] * LeoNerd decides that, on the whole, KiCad is quite suitabl
[18:26:29] <LeoNerd> e
[18:41:35] <timemage> LeoNerd, it's a little clunky, but i've gotten used to it.
[18:43:02] <Tom_itx> Lambda_Aurigae around?
[18:43:09] <Lambda_Aurigae> nope
[18:43:16] * Lambda_Aurigae is just round, not around.
[18:43:26] <Lambda_Aurigae> wha's up?
[18:43:27] <Tom_itx> <andypugh> I am still wondering if you can optimise byte encodings
[18:43:41] <Tom_itx> <andypugh> It will be very application-specific.
[18:43:41] <Tom_itx> <andypugh> You need to set up the translation table for every 30, or every 30/256 for byte 2
[18:43:51] <Tom_itx> he's making some sort of clock
[18:43:57] <Lambda_Aurigae> ok.
[18:44:06] <Tom_itx> want's to store the time in case of power outtage
[18:44:31] <Lambda_Aurigae> I use maxim rtc chips for that.
[18:45:02] <Tom_itx> some sort of antique clock i think
[18:45:21] <Lambda_Aurigae> so, what's the question exactly?
[18:45:45] <Tom_itx> trying to find out..
[18:45:59] <LeoNerd> timemage: Today, I fixed a bug in the Eagle->KiCad footprint import plugin. So now it can cope with curves. :)
[18:46:36] <timemage> LeoNerd, nice. i haven't used it, but probably should have. does it require eagle installed?
[18:46:53] <LeoNerd> Nope. It just reads the Eagle XML files... they're sufficiently self-explanitary
[18:46:56] <Tom_itx> Lambda_Aurigae this is what he's working on: http://youtu.be/LwpqX9QK1zU
[18:47:21] <LeoNerd> This now makes it able to load the Dangerous Prototypes Sick-of-Beige board outlines
[18:50:00] <Tom_itx> i have no audio but i thought somebody here may have some insight
[18:50:04] <Lambda_Aurigae> so, he is wanting to write the time every 30 seconds to the eeprom, cycling through the eeprom so he doesn't wear it out?
[18:50:10] <Tom_itx> yes
[18:50:43] <Lambda_Aurigae> kinda like copiers do for writing to eeprom in toner cartridge chips.
[18:53:13] <Lambda_Aurigae> what channel is he on Tom_itx ?
[18:53:51] <Tom_itx> #linuxcnc
[19:06:11] <Tom_itx> i thought he was asking for help...
[19:06:14] <Tom_itx> typical brit
[19:07:23] <LeoNerd> Heyyyyy
[19:14:26] <Lambda_Aurigae> http://www.microchip.com/wwwproducts/Devices.aspx?product=23LCV512
[19:14:29] <Lambda_Aurigae> Tom_itx, for you.
[19:15:02] <Lambda_Aurigae> http://www.microchip.com/wwwproducts/Devices.aspx?product=23LCV1024
[19:15:08] <Lambda_Aurigae> 1Mbit version even!
[19:15:45] <Tom_itx> heh
[19:16:07] <Lambda_Aurigae> I have a couple dozen of them.
[19:16:25] <Lambda_Aurigae> along with the volatile version
[19:16:27] <Tom_itx> would come in handy if i were doing much lately
[19:16:38] <Lambda_Aurigae> the nvsram versions do 1 or 2 bit transfer at a time.
[19:16:50] <Lambda_Aurigae> the volatile versions do 1, 2, or 4 bit transfer at a time.
[19:46:55] <rue_more> so, they are parallel?
[19:47:28] <Lambda_Aurigae> not really.
[19:47:35] <Lambda_Aurigae> they are spi devices.
[19:47:48] <Lambda_Aurigae> but they are capable of reading out 1,2,or 4 bits at a time.
[19:48:09] <Lambda_Aurigae> operate just like a standard serial sram....spi interface.
[19:48:33] <Lambda_Aurigae> but you can put them into dual or quad mode so instead of 1 i/o pin you have 2 or 4.
[19:49:07] <Tom_itx> sorta like SD
[19:49:21] <Lambda_Aurigae> well,,,,kindasorta...almost, maybe.
[19:50:19] <Lambda_Aurigae> and they clock at 20MHz...but I have heard tell of some people clocking them as high as 40MHz.
[19:54:15] <aandrew> nvsram, nice
[19:55:51] <Lambda_Aurigae> I have used quite a bit of parallel nvsram over the years from dallas/maxim
[19:56:08] <Lambda_Aurigae> their nvsram modules with the built in batteries are awesome.
[19:56:33] <aandrew> I never needed it, but that's a good thing to keep in the back of my mind
[19:56:37] <Lambda_Aurigae> the microchip serial nvsram are nifty too but don't include a battery...it is possible to hook up a supercap or ultracap to keep them live though.
[19:57:12] <Lambda_Aurigae> the maxim/dallas ones come with a 10 year battery that is disconnected at time of shipping...the battery only gets internally connected the first time you actually power up the chip.
[19:57:43] <Lambda_Aurigae> I like using the 32Kx8bit ones for 8052 microcontroller project external memories.
[23:36:30] <Casper> rue_more / rue_bed / rue_shop2 / rue_shop4 ! ya there?
[23:38:39] <rue_shop4> whaaaaaat?
[23:40:04] <Casper> do you have an idea for a panel that hold 4 rods, one at each corner, at 63° or so pointing out
[23:40:16] <Casper> that is lightweight and strong enought and cheap?
[23:40:35] <Casper> actually, more like a frame...
[23:40:40] <Casper> the center need to be removable...
[23:40:51] <Casper> basically, I'm making a light soft box...
[23:40:55] <Casper> for photo stuff
[23:41:12] <Casper> I sadly do not have a welder, which complicate stuff
[23:41:31] <Casper> wood is too fragile since the hole need to be at the corner... and it broke...
[23:44:30] <Casper> so rue_shop4 ?
[23:47:58] <rue_shop4> thicker wood!
[23:50:48] <Casper> 1/2 is what I used
[23:50:52] <Casper> but yeah...
[23:51:06] <Casper> I think I'll check for some zinc bar and brass it in a square...