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ASF I2C library for SAMD does floating point, causing bloat
apparently  _i2c_master_set_config() does this poorly documented: It turns out (http://www.eevblog.com/forum/mic... ) that the ASF function _i2c_master_set_config() uses...
Tuesday, 21 November 2017 - 21:11
Where to report bugs in ASF/etc?
So where does one submit bugs and complaints about ASF/etc for official consideration?   I've found references to http://asf.atmel.com/bugzilla/ , but it seems pretty...
Tuesday, 21 November 2017 - 20:54
libsam documentation?
I guess that libsam was Atmel's ARM library back before "ASF."   I have legacy code that still uses libsam, but I can't find documentation (and it's old enough that...
Friday, 6 October 2017 - 00:51
External Interrupt (EIC) on multiple pins
The SAMD chips only seem to have 16 EIC channels, and up to 7 pins (on sam51p) can share the same channel.   Is it the case that if I enabled multiple pins on the same...
Monday, 2 October 2017 - 09:09
Touch Controller and LED on same pin?
Is is possible to set up a pin to do both capacative touch-sensing AND illuminate an LED to show state "at the same time" ? I was thinking: illuminate the LED for 5ms each 10ms,...
Friday, 9 June 2017 - 09:26
Web site documentation access for Xmega "broken."
The xMega chips pretty much each require two datasheets, the "family" datasheet (ie Atmel-8331-8-and-16-bit-AVR-Microcontroller-XMEGA-AU_Manual) that describes the peripherals in...
Wednesday, 26 April 2017 - 00:23
hijacking avr-gcc/etc from your Arduino install...
With WINAVR becoming unmaintained, various people including myself are starting to think that the easiest way of getting a basic set of avr-gcc tools installed on your Windows...
Monday, 27 February 2017 - 11:31
malloc, free, and __brkval
the avr-libc implementation of malloc() and free() goes to some lengths to maintain __brkval; the top of RAM that is "unformatted" (In between __heap_start to __brkval, we have...
Thursday, 22 December 2016 - 01:50
avr-gcc error messages extra verbose...
The way that avr-gcc (probably gcc in general) handles the #error and #warning processor commands has changed, and gotten a lot messier.   In GCC 4.3 (WINAVR) make atmega328...
Monday, 19 December 2016 - 10:52
getting back-to-back SPI transfers on SAM3X
So I'm using a SAM3X8E processor (Arduino Due clone), and trying to get SPI to go as quickly as possible.  The SAM is running at 84MHz, and the SPI is set to 28MHz. But I'm...
Monday, 5 December 2016 - 09:18
Arduino® – Maker to Market Workshop (San Jose)
Arduino® – Maker to Market Workshop Quote:Join our Wizard of Make, Bob Martin, on September 21, 2016, at Microchip’s San Jose Office for an informative hands-on session covering...
Tuesday, 13 September 2016 - 09:45
ASF: cycle_counter delay functions...
For SAM3X, in cycle_counter.h, we have: #define cpu_us_2_cy ( us, f_cpu ) (((uint64_t)(us) * (f_cpu) + (uint64_t)(14e6-1ul)) / (uint64_t)14e6)For 1 us on an...
Friday, 6 May 2016 - 08:22

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