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Discussion Title Created date
GCC 4.5 "named address space" feature and AVR
I happened to notice that GCC 4.5 implements a new feature called "named address spaces", which seems to have come from ISO as a feature needed for various embedded processors....
Tuesday, 12 January 2010 - 23:16
TWI and *slave* TX arbitration (not master TX)
So I'm curious how to handle the "SMBus Alert" protocol using the TWI controller ... has anyone here managed to do that? Thing is, the TWI controller doesn't document any states...
Friday, 23 May 2008 - 06:52
GCC (non)usage of r0
I'm a bit puzzled by the fact that GCC religiously saves R0 in IRQ prologues (and restores it in epilogues), but basically doesn't seem to use that register in any generated code...
Monday, 21 April 2008 - 07:48
Temperature sensor (ATtinyX4) ... die heats up??
I have an ATtiny that I talk to using I2C, and one of the things I do is ask it for the temperature. I'm seeing odd behavior ... when I ask the temperature after the AVR has been...
Friday, 28 March 2008 - 05:47
studio on Linux, like AVR32studio?
Just curious here ... has there been any work on coming up with AVR8 studio support on Linux, following the trail blazed by AVR32 studio? I ask for the obvious reason: avoiding...
Thursday, 20 March 2008 - 09:44
ATmega32U4 ... a.k.a. at90usb324 (tqfp44)
Preliminary datasheet is downloadable, engineering samples available ... press release went out yesterday ... sibling ATmega16U4, no datasheet ... "both devices will be shipping...
Sunday, 9 March 2008 - 08:51
GCLK at 25 MHz using NGW PLL1 ...
I'm looking at a prototype where I need a 25 MHz clock, and it seems like it should be easy to get that using one of the GCLK pins. But ... how? Clearly PLL0 output is no help;...
Thursday, 9 August 2007 - 18:45
open-drain GPIO drivers?
RevH of the ap7000 docs added the previously-hidden MDER, MDDR, and MDSR registers ... resolving the main difference betwen these GPIO modules and the AT91 modules. (The docs...
Saturday, 4 August 2007 - 18:53
NGW "boot select" (J15)
Near as I can tell, the "boot select" jumper next to the reset button on the NGW100 does ... nothing documented. Is that true? What is it intended to do?
Monday, 30 July 2007 - 03:21
toolchain_source_1.1.0 source doesn't build...
See details in the Ubuntu thread ... binutils is missing some essential #defines, for starters. Are there patches available (yet) to fix this? Best of course would be to deliver...
Tuesday, 17 July 2007 - 01:42
crystals: HC49/US cans, or cylinders?
I can buy a couple different kinds of non-SMT crystals, and I'm wondering what the practical difference is. Most products seem to use the HC49/US low profile cans. But the...
Friday, 8 June 2007 - 03:44
ngw100 and stk1000 price increases?
Anyone know what the story is? Digikey (at least) increased prices recently ... * NGW100 ... announced 26-March-2007 as a $69 board, now costs $118.25 (less than a month later...
Wednesday, 25 April 2007 - 17:54

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