Build and upload c/cpp code to Arduino microcontroller by avr-gcc, avr-objedump, avrdude

README.MD

Scheme build and upload cpp code into Arduino:

Example by docs

Usage

• Install gcc, avr-gcc, avr-objcopy, avrdude
• Use updaload.sh

Docs

• main file from link
• basic led scratch
• If you use mac os look up this repo
• More details in official docs link

main.cpp

#include <Arduino.h>

const int delayTimeout = 100;
const int pinLed = 13;

void setup() {
  pinMode(pinLed, OUTPUT);
}

void loop() {
  digitalWrite(pinLed, HIGH);
  delay(delayTimeout);
  digitalWrite(pinLed, LOW);
  delay(delayTimeout);
}

int main(void) {
  init();
  
  #if defined(USBCON)
    USBDEVICE.attach();
  #endif
  
  setup();
  
  for (;;) {
    loop();
    
    if (serialEventRun) serialEventRun();
  }
  
  return 0;
}

upload.sh

#!bin/sh

SOURCE=main.cpp
OBJ=main.o
OUTPUT=main
LOAD=main.hex
PORT=/dev/ttyACM0
SPEED=115200

avr-gcc -Os -DF_CPU=16000000UL -mmcu=atmega328p -c -o $OBJ $SOURCE

avr-gcc -mmcu=atmega328p $OBJ -o $OUTPUT

avr-objcopy -O ihex -R .eeprom $OUTPUT $LOAD

avrdude -F -V -c arduino -p ATMEGA328P -P $PORT -b $SPEED -U flash:w:$LOAD