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Fuses on SAMD21 Xplained
OK, it was all good until I tried to write fuses. Now the micro seems unresponsive and I keep getting: Writing register USER_WORD_0...OK ... Verify register USER_WORD_0...Failed!...
Thursday, 3 September 2015 - 17:48
Micro-USB standard OTG cable
Where would I get one? (Got a SAM D21 Xplained Pro. It came without any cable. I have the micro-USB device cables. But not a OTG one (into which I want to plug, say, a flash drive...
Tuesday, 1 September 2015 - 18:24
EDBG Virtual COM Port driver issue
SAM D21 Xplained Pro Evaluation Kit Plug it into USB Says that Device driver software was not successfully installed Windows 7, AtmelStudio 6.2 (but the driver is from...
Tuesday, 1 September 2015 - 18:19
Difference between watchdog and external resets
Tiny861. Works fine if reset via PORF or EXTRF. But not if via watchdog. Anyone seen anything like that? Bad micro? So far I tried this on just one unit. Will try another one on...
Sunday, 5 July 2015 - 18:08
ATtiny13A 4.8MHz
OK, the datasheet says that "the calibrated internal oscillator provides a 4.8 or 9.6 MHz clock source". On the real thing, I see that 9.6 is approximately 9.6. Great. But 4.8 is...
Thursday, 25 June 2015 - 21:52
Is this me or the compiler?
One of those days. The compiler seems to think that "(u16() != 0x8765)" is already true. What am I missing?   The code: #include <avr/io.h> volatile uint8_t v; static...
Friday, 6 March 2015 - 19:49
.relocate section?
I'm looking at a SAM elf file. I see that it has no .data section, but instead has some sort of .relocate? What is that thing?
Tuesday, 26 August 2014 - 14:27
BetaWare USB driver
There used to be a site called http://www.atmel.no/beta_ware/ where one could get the latest USB driver. Anyone knows what happened to it? Any other place to get the driver...
Thursday, 31 July 2014 - 22:12
volatile pgmspace
Let's say I'm in a bootloader. Flash can change. How would I tell the compiler not to optimize, say, pgm_read_word calls? (For now I just wrapped pgm_read_word into an external...
Sunday, 2 March 2014 - 18:16
__divmodhi4 and __divmodsi4
I know that hi4 is int16_t and si4 is int32_t. But what do 'h' and 's' stand for?
Friday, 1 November 2013 - 14:32
PDI does not respond
Trying to program one xmega from another. According to AVR1612, the initial steps are: 1. Load the PDI RESET register with the Reset Signature (0x59). 2. Load the correct NVM...
Monday, 1 April 2013 - 20:39
avr8-gnu-toolchain License.rtf
GNU license in rtf format - for some reason I find that almost offensive. Is this just me?
Tuesday, 19 March 2013 - 18:08

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