Questions tagged [compiler]
A compiler converts source code (C++, Java, etc) to machine code which is what the CPU runs.
38 questions
2 votes
0 answers
38 views
Unnecessary recompille after connection error
I sometimes multitask during a large compile (wifi, etc libraries) and don't get back in time to press the ESP32 upload button. If the connection times out, the IDE recompiles all the source again. ...
- 21
-1 votes
2 answers
110 views
Removing the L from F_CPU in assembly
I am developing a mixed c++ /asm project. In the asm I am using F_CPU to do some busy waiting as follows. However, by default, the F_CPU is defined with a trailing L (for long). The asm is not able to ...
2 votes
1 answer
257 views
How to make the compiler ensure that local variables memory allocation won't cause any RAM overflow during execution?
Upon compiling a sketch using the Arduino IDE, a message like the following gets displayed in the console: Global variables use 1540 bytes (75%) of dynamic memory, leaving 508 bytes for local ...
- 145
1 vote
1 answer
1k views
Compiler error: final link failed: bad value collect2.exe
I work With VS Code v:1.59.1. With extension vscode-arduino v:0.4.4 befor update of vscode. in version 1.58. all was ok. I can build and upload code for all mucrocontrollers. but after the update, I ...
- 121
0 votes
1 answer
134 views
Global array doesn't get assigned the space it would take up in memory
I have this sketch: const uint32_t len = 65536; uint8_t arr[len]; void setup() {} void loop() {} The length of the array should fit into the dynamic memory. However, when I compile the sketch it ...
- 295
1 vote
0 answers
460 views
Can data be stored in program storage space instead of dynamic memory?
I'm declaring an array at top level like so: constexpr byte a[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; // whatever data I'm referencing the array in such a way that it's not optimized away. When ...
- 111
0 votes
1 answer
153 views
Problems with compiling more then one sketch in the Arduino IDE
I found this ESP8266-MQTT program on Github. How can I compile this thing with the Arduino IDE? I only can open one sketch at a time. If I try to compile this then parts of the program are missing for ...
2 votes
1 answer
3k views
ld.exe:linker_script.ld:138 cannot move location counter backwards | ArduinoFFT Error
Board: Arduino Nano 33 BLE Sense I'm pulling PCM data from an onboard microphone and running it through the arduinoFFT library (version 1.5.6) to obtain a spectrogram. Since the arduinoFFT library ...
- 23
2 votes
1 answer
1k views
Arduino IDE - scope of the pre-processor "#define"
I'm creating an Arduino library and have 3 files - a "test.ino" program, and two library/class files: "testLibrary.h" and a "testLibrary.cpp". The library makes use of ...
- 61
6 votes
3 answers
3k views
Using Arduino as a standalone compiler
I mostly program in C/C++ so I conviniently have a GCC compiler for all my compilations. I was wondering if there is a special compiler for Arduino that can be used just like the GCC Compiler? Because ...
4 votes
1 answer
619 views
Does the compiled binary of a sketch include uncalled functions from a library?
I am writing a GUI using a TFT display and the Adafruit GFX library and its default font on Arduino Nano. I want to be memory efficient and I assumed that the 'optimise for size' default setting of ...
- 323
1 vote
0 answers
259 views
Error compiling to ESP32 using Arduino: Operand 2 of 'l32r' has out of range value
I was trying to follow this tutorial and ran into a problem compiling on the Arduino IDE with an ESP32 board. https://eloquentarduino.github.io/2019/12/how-to-do-gesture-identification-on-arduino/ I ...
- 111
1 vote
0 answers
99 views
How to compile Arduino Framework with GNU
I'm wondering if it's possible to use GNU (g++) to compile a arduino Sketch. I wanna be able to unit test my code with catch2. g++ -std=c++11 <filename> works well with catch2, but I obviously ...
1 vote
2 answers
121 views
Runtime compilation
I want to compile a sketch on Arduino Uno, while Arduino is running and not connected to anything else, and then run the compiled sketch automatically. Is this feasible? How?
- 11
0 votes
1 answer
4k views
Can't use uint16_t in library
I wonder why the following minimal example sketch doesn't compile (unknown type name 'uint16_t'): sketch_does_not_compile.ino: #include "myheader.h" void setup() { char a[]="hello ...
- 1,878