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How to call a function in the In-System Reprogrammable Flash from C
I'm trying to execute some code on the AVR128DA48 that I've generated at run-time.   I've copied it to the In-System Reprogrammable Flash, which is in the code space from...
Sunday, 21 March 2021 - 15:23
Waveform generation not working on TCA0
I'm trying to flash an LED on an ATtiny402, using Frequency (FRQ) Waveform Generation mode on TCA0. The LED is connected to WO0 which is PA3, and I'm running the ATtiny402 with...
Friday, 26 February 2021 - 10:57
Event System differences between ATtiny 1-series and AVR DA-series
I have finally understood a bit about the Event System in the AVR DA-series, and got an application working using the RTC to send an event to TCD0 on INPUTB to perform a...
Thursday, 18 February 2021 - 12:21
Why am I getting a large error when using differential ADC?
I'm trying to read a voltage using a differential ADC conversion on the AVR128DA28 or AVR128DB28. I'm testing it with a 1.024 voltage reference by connecting both ADC inputs...
Saturday, 23 January 2021 - 13:55
Please recommend documentation about configuring registers
Can anyone recommend a good reference explaining how to construct register values for the new AVR DA and DB processors (and ATtiny 0-series, ATtiny 1-series, and ATmega...
Thursday, 26 November 2020 - 11:43
Limitations combining Configurable Custom Logic Look-Up Tables
Concerning the AVR DA chips and the new ATtiny chips: there seem to be limitations in combining Look-Up Tables to go beyond four inputs.   The application I have in mind is a...
Monday, 16 November 2020 - 10:27
Use Configurable Custom Logic as high speed frequency divider?
Concerning the AVR DA chips and the new ATtiny chips: Does anyone know whether it is possible to use the Configurable Custom Logic Sequencer Logic Functions, such as the JK...
Monday, 16 November 2020 - 10:13
Detect which interrupt called an ISR on ATmega
I want to have a single ISR handling the eight INTn external interrupts on a ATmega2560, using ISRALIASOF(INT0_vect) for INT1 to INT7.   Is there a way within the ISR to...
Sunday, 23 April 2017 - 10:48
Problems generating waveforms by polling ATtiny85 TIFR flags
I wonder if anyone has experience of polling the ATtiny85 Tiner/Counter1 using the OCF1A, OCF1B, or TOV1 flags in TIFR.   I want to generate an accurate symmetrical 50kHz...
Friday, 3 March 2017 - 11:50
What's the logic behind GCC's low memory warning?
I've been testing a data-logging program on different Arduino boards, making the data array as large as possible before the compiler gives a warning. But I can make no sense of...
Tuesday, 10 May 2016 - 15:48
Is longjmp incompatible with serial on the ATmega32U4?
I'm writing a simple language interpreter in C for Arduino boards, using serial to communicate with the program. Here's a test program to illustrate what I'm doing: #include <...
Thursday, 5 May 2016 - 16:10
How do I create an empty bootloader?
I'm trying to write a simple core to allow you to program a chip (the ATmega1284) using ISP on the Arduino IDE.   I've searched on AVR Freaks and found some excellent...
Sunday, 24 April 2016 - 10:00

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