Questions tagged [avr-gcc]
AVR-GCC is a compiler that takes C language high level code and creates a binary source which can be uploaded into an AVR micro controller.
68 questions
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Why does the use of serial.readBytes increase program size by 10kb?
If I put this in my arduino program, in main.cpp, I suddenly run out of memory for flash program size:
if(msgSize > 2) {
//sr::sequentialRead(&serialRead, newTram.hash);
uint8_t bytes[...
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How to run avr-gcov on a .ino sketch file
I am new to Arduino and gcov. I have a .ino sketch file, avr-gcov, and avr-gcc from Arduino library in the same directory. Could someone guide me to the steps I should take to run avr-gcov on my .ino ...
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slower clock frequency than expected on attiny202
I am programming an attiny202 which as per datasheet can run up to 20Mhz, but after compiling/uploading this simple code to the attiny202 and watch the PA2 pin on the oscilloscope, I see that the pin ...
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Do I need to use resisters and ICes for specific sensors.What if I dont use it,Will it impact my arduino board some how like making it useless &faulty
So I was reading about Simple AutomaticLight Controller using LDR. or with the help of LDRSenso. But I have LM393 Photoresistor (LDR) Sensor I like to know are they same thing or somewhat different. ...
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Why do I have to burn the code to make it run? [closed]
Why do I have to burn the code twice to actually burn it on to the Arduino board? I have to execute this command twice - only then is the chip getting programmed.
I'm using this command to burn the ...
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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. ...
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Own type definition using a struct does not name a type
I need to initialize several buttons and LEDs connected to my Arduino. To store data related to an individual button or LED, I decided to define my own data type using two different structs. One for a ...
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Weird assembly output
I was taking a look at the disassembly for a loop of mine that seemed to be taking too long and I found these assembly instructions that I don't understand. Why does it load 0 into r25 and then do two ...
- 137
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Reading port register and print
I am playing with port registers directly to improve speed on a Arduino micro. I have no problem writing them, like
PORTF &= B11101111
However, when I try to read and print it, things get funny ...
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Error Compiling any coding in Arduino IDE
I was using the example code of "Blink", and when I try to compile it, it pop out an error as below.
I tried to:
uninstall and installed back the Arduino IDE
installed different versions of Arduino ...
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Atmega collecting and relaying interrupt calls
I like to collect all possible interrupt and relay them to an alternative handler interrupt table what the user can set.
In order to do this i have to:
1) collect all/any interrup request
2) ...
- 193
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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(...
- 193
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Weird behavior (Couldn't pull the pin LOW)
I was trying to implement my own code to control a stepper motor on arduino uno, however I noticed that the pins were always HIGH despite what was written to them. I started to erase the code to leave ...
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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 ...
user37286
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How does the build process in Arduino IDE work for ESP8266
How does the build process for esp8266 work in arduino IDE. Arduino ide uses avr-gcc to compile programs For atmel micro controllers. Does it uses same for compiling programs for esp8266?
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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 ...
- 111
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Bootloader fails when two Arduinos are connected over serial port
I’d like to connect two Arduinos over serial port so that they can communicate with each other. Initially, I put all necessary code onto one device and now connected another via serial port. As soon ...
- 121
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Building mocoLUFA under OSX & Linux
I am attempting to build mocoLUFA under OS X el Capitan 10.11.6.
[Editor: mocoLUFA (MIDI firmware for Arduino Uno)]
I am using the specified LUFA version (LUFA101122) and I have tried building with ...
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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(): ...
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Melzi 2.0 Board Firmware Upload problem
I'm trying to flash the repetier Firmware to my Prusa i3 3D Printer, which uses Melzi 2.0 board. I uploaded it successfully 2 days ago with same settings but now is failing always.
@avrdude -p ...
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Compiling Error
I am trying to compile this code on arduino IDE...It showing error
code is
#include <IRremote.h>
int RECV_PIN = 6;
int led = 12;//1FE50AF
int led1 = 10;//1FED827
int led2 = 9; //1FEF807
int ...
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How to detect Genuino 101 from inside the code?
I am using a custom library for Arduino Mega which uses AES library for AES-128 encryption.
However, when I try to use that library in Intel Genuino 101 development board, it shows compilation error ...
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Since double and float represent the same data type (usually), which is preferable?
It looks like on ATMega based boards, float and double are equivalent 32-bit (4-byte) data types.
However, on the Arduino Due, doubles are 64-bit (8-byte) where floats are 32-bit (4-byte), same as ...
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Trouble with Timer 0
I'm taking my first wobbly steps outside the Arduino IDE and I'm not having much success with timers / interrupts. I can set a pin to output and light an LED with registers fine but I cannot for the ...
- 339
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Why serial communication does not work on atmega168/328p?
I expect from the following program serial.c to light the led on if I send key 1 from terminal, and light the led off when I send key 0 from terminal:
#define F_CPU 16000000UL
#define BAUD 9600
#...
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