I have a weird problem when doing inline asm and compiling/linking with avr-g++ (version 16, fresh from the Git). I think this might be a bug of the tool chain, but I wanted second opinions in case I ...

I successfully implemented a keypad matrix in an atmega328 through polling in the main loop and now my goal is to do it only on key press (using pin change interrupt). I'm using PORTB[3...0] for rows ...

My implementation of an API function doing a simple SPI transfer, offering a void *intfPtr parameter to pass a "device descriptor" which I am using to pass the I/O port and pin for SPI chip ...

I'm a beginner working on AVR programming on the ATmega328P. I am trying to get input from a button and then control an LED. void setup() { DDRB |= (1<<PB5); DDRB &= ~(1<<PB4); ...

When programming for an AVR compatible micro controller, such as the Atmega328p, you're facing an error after successfully building and uploading a first time, but all subsequent times result in an ...

I am experiencing a very strange behavior of IAR Embedded Workbench for Microchip AVR 7.30.5. When attempting to build a project I get the following output at the end of the build: When done from GUI: ...

The YL-69 sensor(for soil moisture using a comparator circuit LM-393) is functional. When tested with C code on the Arduino IDE, it prints the correct values on the serial monitor. However, when ...

Avr-gcc 7.1, Win10. When compiling a simple LED blinker C code using avr-gcc, it outputs: Invoking the avr-gcc is done by hand using: avr-gcc -g -Os -mmcu=attiny13a -c "Attiny_blink_01.c" ...

#define __SFR_OFFSET 0 #include <avr/io.h> .global main main: ldi R16, 0xFD ; Set PD1–PD6 as outputs, PD0 as input out DDRD, R16 ldi R16, 0x01 ; Enable pull-up resistor on ...

Recently I've been getting into bare-metal programming with the Arduino-Nano, and wanted to play around with the UART protocool. I made a simple "shell" using rust on my host machine that ...

.include "m8def.inc" .org 0x0000 rjmp RESET .org 0x0020 rjmp TIMER0_OVF_ISR RESET: ldi r16, low(RAMEND) out SPL, r16 ldi r16, high(RAMEND) out SPH, r16 ldi ...

I am using Simavr to simulate an AVR ATmega328P chip, so I dont know if this is a problem in the simulation or if it happens in the MCU too. When using the timer0 in CTC mode the TOV0 flag seems to be ...

I'm just wondering if there is a way I can tell the compiler that I want to create a static array inside the .data section of the Arduino's SRAM, where the array's size is calculated using the size of ...

I have a project in college where the main in asm has to call a function in c, but I don't know how to initialize the stack (rstack and cstack). I mention that the project is on an atmega16. Main asm ...

I'm making a library for Arduino Uno in Rust from scratch. Currently, there's a basic Serial.write print example in the src/main.rs, which on compilation is around 500 bytes (cargo b --release). $ avr-...