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Achieving 1MS/s on SAMD51 DAC?
The SAMD51 DAC is supposed to do 1M conversions/second.  What exactly do you need to do to actually achieve that, or anything close to that?   the Clock should be set to...
Friday, 15 March 2019 - 00:25
Antique CPUs for sale!
(no, not from me.) http://www.bgmicro.com/ICSAT90S4...
Thursday, 14 March 2019 - 07:58
Oscillator calibration. Or decallibration
So if we’re using the internal oscillator, there is usually an associated calibration register. If there is a reason for runnng “as fast as possible”, I might just pick the top...
Wednesday, 13 February 2019 - 10:18
Executing ASCII - an observation.
Huh.  In the AVR instruction set, all of the branching, memory access, and IO instructions have the high bit (0x80) set. This means, if you inadvertently were to, say, put a...
Thursday, 7 February 2019 - 03:04
Simulator hooks?
Does the AS AVR Simulator (or any other AVR simulator, for that matter) provide any mechanism where a user-written host program can examine the chip state when a breakpoint is hit...
Friday, 25 January 2019 - 23:54
Low power sleep modes on SAMD21, SAMD51...
I am pretty confused about the interactions of the various pieces involved in low-power modes of the SAMD processors. There's the WFI instruction of the ARM. There's the SCR (...
Saturday, 12 January 2019 - 01:39
CMSIS .svd files...
I sort-of thought that the .h files included in studio were automatically generated from the ARM-standardized CMSIS ".svd" files. But in fooling around with parsing the .svd files...
Friday, 14 December 2018 - 10:10
Running Arduino code on an ATmega4809 Xplained-Pro board...
I'm not really that interested in WiFi, so I figured I'd see if I could get the new "Arduino WiFi v2" (which uses the ATmega4809, and mEDBG chip, and an ESP32 module, plus some...
Tuesday, 11 December 2018 - 11:25
avr-gcc optimization of xor incorrectly eliminates volatile access!
Has anyone else seen this?  Any ideas?   avr-gcc (AVR_8_bit_GNU_Toolchain_3.6.1_495) 5.4.0   #include <avr/io.h> int aRead() { uint8_t h,l; l = ADCL...
Tuesday, 27 November 2018 - 02:35
RSTPINCFG (enable RESET functionality) on ATmega4809 can interfere with UPDI?
So I wanted to make the RESET button on my ATmega4809 Xplained Pro actually reset the CPU (not the default, apparently), and went into the Device Programming Panel of AS7, to set...
Monday, 26 November 2018 - 04:04
Knowing compile-time options within source code?
Is there a way to tell which compiler options have been specified on the command line, so as to take appropriate action or issue warnings?   I'm interested in know whether "-...
Monday, 5 November 2018 - 03:10
MPLABX first users
Split form here JS https://www.avrfreaks.net/commen...   Copy of a message I sent off to AVRSupport@microchip (as they request for people trying to use MPLAB for AVR):...
Monday, 8 October 2018 - 10:08

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