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Weird gcc behavior: unconditional code produced for "for" loop?
Is the compiler somehow permitted to assume that a positive "integer" constant that is incremented will always be positive? void externfunc(int); int main() { for (int a =...
Sunday, 17 January 2016 - 11:04
GPIO on SAMD: why would I ever clear PORT_PINCFG_INEN ?
Why would I ever want to clear the PORT_PINCFG_INEN bit in SAMD pincfg register? It seems like it is far enough "downstream" of other functions that there would never be a reason...
Monday, 28 December 2015 - 02:41
SAM-BA Bootloader/Boot Assistant on factory fresh chips?
Which chips have SAM-BA in memory when shipped from the factory? I guess the larger ARMs (SAM3, SAM4) have that or some other bootloader in factory-ROM and it stays there. ...
Friday, 11 December 2015 - 17:37
Propagating target "properties" (build settings)
Suppose that I have carefully crafted a set of toolchain settings for the "debug" target configuration of my project. Is there an easy way to propagate or copy those setting to...
Wednesday, 25 November 2015 - 11:17
Peripheral comparison?
I'm looking for some kind of document that describes which Cortex-M microcontrollers have common (or differing) peripheral modules for the various functions. For example, the...
Friday, 6 November 2015 - 08:42
Modern (2015) replacement for WinAVR?
What's the minimal set of downloads people are using to replace WinAVR, now that the Atmel Toolchain doesn't include any of the "loosely associated" unix-like tool executables (...
Wednesday, 7 October 2015 - 01:17
Source for 5x2 1.27mm connectors?
Does someone have a source for the 5x2 1.27mm male pin-header jtag connectors that Atmel likes to leave footprints for on their low-end development boards? The Xplained mini BOM...
Sunday, 20 September 2015 - 09:38
AVR mEDBG or EDBG tool for linux/macos/etc?
Is there an open-source linux or mac tool that can upload code to boards like the Xplained mini 168pb, 328p, and 328pb?   Preferably CLI-based. It looks like avrdude is...
Tuesday, 15 September 2015 - 23:06
avr-gcc produces awful code when using global register variables...
This came up on the Arduino forums...  Avr-gcc supports putting global variables in registers, right?  As in: volatile register unsigned char xxx asm("r3"); ISR(...
Thursday, 3 September 2015 - 06:01
mEDBG USB/Serial Baud rates?
Does anyone know if the mEDBG chip (ATmega32u4 based) used on the Xplained mini eval boards supports baud rates above 57600 in its USB/Serial bridge code? EDBG (AVR32 based, I...
Saturday, 29 August 2015 - 08:40
ATmega328PB
What's the status of this chip?  Announced last november, it's apparently shown up only as the eval board.   That's fairly typical, but in this case: 1) There's no...
Wednesday, 26 August 2015 - 19:41
Revision control for AS
What are my options for revision control add-ons for AS?  Something simple and local, preferably - rcs is my usual choice for single-person projects when I'm not using an IDE...
Monday, 17 August 2015 - 04:25

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