Questions tagged [avr-toolchain]
The AVR® Toolchain is a collection of tools/libraries used to create applications for AVR microcontrollers. This collection includes compiler, assembler, linker and Standard C and math libraries.
30
questions
1
vote
1answer
193 views
AVRdude does not read the FUSE byte values correctly
I am exploring the ATmega328p MCU via a standard Arduino UNO, with the help of avr-gcc toolchain and AVRdude (All in the WINAVR package). I have successfully programmed the board a few times with it. ...
3
votes
1answer
98 views
What happens when you call malloc()/free()/new/delete?
So I understand that generally speaking, dynamic allocation should be avoided. My question isn't how or why, but what happens when you call a function that allocates memory?
On Windows or Linux, when ...
12
votes
1answer
942 views
_delay_ms() is much slower than expected (by a factor of 6) on TinyAVR 0/1 (ATTiny1604)
I designed a custom AVR development board using the Atmel ATTiny1604 microcontroller. It belongs to the new Tiny-0 family, due to its recentness, some required changes to relevant toolchains have yet ...
0
votes
1answer
88 views
What else is consuming Data Segment reported by avr-size?
I am facing a low memory available problem in arduino. I am compiling a big sketch for arduino mega 2560.
Analysing a .elf file, the avr-size tool gives:
text data bss dec hex filename
...
1
vote
1answer
513 views
Interleave disassembly + source with avr-objdump
I have a C program for the attiny85, that I want to disassemble and display with interleaved source code.
Here's my program:
test.c
#include <avr/io.h>
int main() {
for(int i=0; i<100; ...
4
votes
1answer
257 views
MEGA 2560: Simple program - One analogWrite turns off the other
I'm using Windows 10, Arduino 1.8.12 (Windows Store 1.8.33.0)
I have an Arduino MEGA 2560 and a red LED connected to pin 4.
#define RED 4
#define GREEN 2
void setup() {
analogWrite(GREEN, 0);
...
0
votes
1answer
230 views
Why is Toolchain Not Updated with Arduino IDE Install on Mac
I have not been doing any Arduino work for about a year. The last time I ran the Arduino IDE was in the previous version of MacOS. Now that I have updated to the latest MacOS Version Catalina (10.15....
1
vote
2answers
312 views
Multiple defintion error, Linker error [closed]
Trying to create an elf file for two sets of files in different folders.
LIDARBOT.h
-----------
#ifndef LIDARBOT_H_
#define LIDARBOT_H_
#include <avr/io.h>
#include "drivers/motors.h"
#endif
...
0
votes
1answer
43 views
ISR definition causing boot loop?
I am trying to compile and upload code to an Arduino Uno from the command-line, however I seem to be experiencing an odd issue.
When I compile this code:
#include <avr/interrupt.h>
#include &...
0
votes
1answer
87 views
My software serial code won't work at > 4800bps
I've put together a simple software serial (send-only) implementation for use on my attiny8[45] microcontrollers. I realize that there are more efficient USI-based implementations out there; this was ...
2
votes
1answer
292 views
AVR-GCC can't call function located on fixed address
I wrote the following code:
#include <avr/io.h>
__attribute__((noinline, section(".app_start"))) void app_start() //app_start section starts at 0xFA0
{
//register_packet_dispatch(...
1
vote
1answer
4k views
How would I include Arduino libraries using AVR-gcc without the IDE?
I am writing my own code for the Arduino Uno. I compile my code with AVR-gcc, and then upload it with AVRdude. I am not using the Arduino software, but I do have it installed and working on my PC. I ...
0
votes
1answer
1k views
avr_g++ compiler error: expected primary-expression before '.' token (C code in .ino)
The compiler is complaining about a macro defined in mjson.h
Documents\Arduino\libraries\microjson/mjson.h:135:28: error: expected primary-expression before '.' token
#define STRUCTOBJECT(s, f) ....
0
votes
1answer
4k views
avr/io.h No such file or directory error when compiling using avr-gcc
I am trying to use the atmega328p as standalone microchip and program it. I ama using an Arduino Uno as ISP. I have written a simple program to test it however when I try to compile it using
avr-gcc ...
1
vote
0answers
237 views
AVR-Toolchain for Arduino crashes on Mac OSX 10.11.6: Hints or debugging help needed
My Arduino IDE does not compile any project since I updated from Mac OSX 10.6.8 to 10.11.6.
I even tried reinstalling and also manually installing the original AVR-toolchain. But the behaviour did ...
0
votes
1answer
82 views
Where is CLKPR located on Ubuntu 16.04 with Arduino 1.8.3
I would like to see the definition of CLKPR. I guess that similarly to PORTB and other registers, it should be defined by the toolchain? (see Where is PORTB defined? )
Am I right?
Where should I look ...
1
vote
4answers
156 views
Porting code from Arduino IDE to other IDEs - expected code size reduction
Could I realistically be expecting some 25% - 50% code size reduction if I abandoned Arduino IDE's framework and moved to something more rudimentary such as AVR Studio ? I am using the EEPROM, Timer1 ...
0
votes
1answer
173 views
Equivalent to POSIX mmap() in AVR-libc
Is there an similar function in AVR-libc/Arduino C++ to mmap()? I'm looking for a way to place machine code in memory at runtime and make it executable.
1
vote
1answer
695 views
Compiling source with Arduino.h with avr-g++
How should I include the Arduino libraries when I'm compiling from the the command line? I tried to do it like this:
avr-g++ -g -Os -Wall -mcall-prologues -mmcu=atmega328p -fno-exceptions -o blink....
2
votes
2answers
1k views
programming arduino in pure c
I'm trying to flash pure c-code to arduino Mega2560 board from linux using avr-gcc & avrdude. Compilation is done , now trying to flash using avr-dude, getting error as "avrdude: stk500_recv(): ...
1
vote
3answers
243 views
Can I port a project built on Arduino Uno to a standalone ATmega328 using the exact same code?
I'm building an IoT power usage monitor in which the data is logged using a RTC and an SD card module and a web app hosted on an ESP8266 gives access to this data. My question is can I use the exact ...
1
vote
1answer
155 views
avr-gcc -D is ignored
Im trying to use XCode to compile avr program with arduino libs but seems like something wrong with my Makefile because it throws me warnings like
# warning "F_CPU not defined for <util/delay.h&...
1
vote
2answers
118 views
Logging without IDE
Is there a way to log events on Arduino when developing using C / AVR toolchain, and not the Arduino IDE? Working on Ubuntu.
2
votes
1answer
205 views
How can I make Arduino IDE use Atmel's provided toolchain? (Linux/Ubuntu)
I have an Arduino based board using ATmega168PB, but so far only Atmel's provided toolchain supports this microcontroller. I can download the toolchain from Atmel's website, but I am not sure how to ...
3
votes
2answers
7k views
How to program AVR in Mac OS X?
In our college we are using a module developed by IIT Bombay (called FIREBIRD V[ver 5]). It has ATmega2560 and ATmega8 microcontrollers (master and slave) with bootloader.
The staff uses AVR Studio ...
2
votes
1answer
570 views
Interleave Assembly and Source for avr-objdump
Trying to get avr-objdump to generate a listing that interleaves the assembly with the source code. I've tried a bunch of debugging arguments in different configurations but I can't seem to get it. ...
3
votes
1answer
2k views
Arduino in Eclipse IDE: How to add SPI library (core library already added)?
I want to use eclipse for arduino programming, so I followed the guides to set up a static project for the arduino core library. Then I added the library file (.a) and the .h and .cpp files to my new ...
3
votes
1answer
3k views
Storing in a global variable using inline assembly
What I'm trying to do is pretty basic: I have a global variable and I'm trying to store some value in it (specifically, the SP_H and SP_L values).
The variable is an array of structs and I'm trying ...
1
vote
1answer
122 views
Why are Tone.cpp and IPAddress.cpp getting built for my project?
I'm using avr-size to see the size of library objects to free up some FLASH. Why are Tone.cpp and IPAddress.cpp getting built? e.g.
$ cd /var/folders/3j/6wp3hvrj34n0xg3xzq6vjq380000gn/T/...
13
votes
2answers
1k views
Assembly on the Arduino: IO registers
Question: What registers do I use to access the IO on the Arduino Uno when I am using assembly for programming?
Background: I was interested in practicing my assembly language skills on the Arduino (...
