Understanding Compilation Process and Arduino Programming
Dive into the compilation process, from preprocessing to linking, and explore Arduino programming with examples on button pull-up modes and LED control. Get insights on dynamic versus static linking and practical coding implementations.
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Presentation Transcript
Compilation Preprocessor gcc -E code.c Compiler code gcc -S code.c Assembler gcc -c code.c Linker gcc code.c code.i code.S code.o code.exe
Linker (entry point)
Dynamic vs static Linking Static linking/ . (+) (-) + Arduino Dynamic linking / . (+) + (-) dll- hell arduino
# this is sample main file .SILENT : main libadd.a Makefiles main : gcc_main.o libadd.a @echo "> Started building main.exe" gcc -o main.exe gcc_main.o -Lbin\static -ladd ( ) . ( Arduino). @echo "> Finished building main.exe gcc_main.o : software projects. @echo ">>>>>>>>>>>>>>>>>building gcc_main.o" gcc -c gcc_main.c -o gcc_main.o compile . libadd.a : add.c X 3. @echo ">>>>>>>>>>>>>>>>>building libadd.h" mkdir -p bin\static gcc -c add.c -o bin\static\add.o ar rcs bin\static\libadd.a bin\static\add.o clean : -rm main.exe -rm -rf bin/*
Arduino (tinkercad) physical 2 . : to button pullup mode : global
bool buttonState = 0; bool previousState = 1; long int prevTime = 0; bool flagMessageSent = 0; K void setup() { Serial.begin(9600); pinMode(2, INPUT_PULLUP); 2 : 1o void setup() void loop() pinMode(LED_BUILTIN, OUTPUT); } void loop() { buttonState = digitalRead(2); elegxoi (buttonState); previousState = buttonState; } 2o: void elegxoi() void elegxoi (int buttonState){ long int time = millis(); // check if pushbutton is pressed. if it is, the // buttonState is HIGH if (buttonState == LOW ) { // turn LED on digitalWrite(LED_BUILTIN, HIGH); if(previousState==HIGH){ prevTime = time; }else{ if(time-prevTime>=2000 && flagMessageSent==0){ Serial.println("To koumpi path8hike"); flagMessageSent = 1; } . 1o 2 } } else { // turn LED off //prevTime = time; flagMessageSent =0; digitalWrite(LED_BUILTIN, LOW); } }
(ino, hpp) (loop, setup) Ino file #include other.hpp Other.hpp bool previousState = 1; long int prevTime = 0; bool flagMessageSent = 0; bool buttonState = 0; bool previousState = 1; void setup() { Serial.begin(9600); pinMode(2, INPUT_PULLUP); void elegxoi (int buttonState){ long int time = millis(); // check if pushbutton is pressed. if it is, the // buttonState is HIGH if (buttonState == LOW ) { // turn LED on digitalWrite(LED_BUILTIN, HIGH); if(previousState==HIGH){ prevTime = time; }else{ if(time-prevTime>=2000 && flagMessageSent==0){ Serial.println("To koumpi path8hike"); flagMessageSent = 1; } pinMode(LED_BUILTIN, OUTPUT); } void loop() { buttonState = digitalRead(2); elegxoi (buttonState); previousState = buttonState; } } } else { // turn LED off //prevTime = time; flagMessageSent =0; digitalWrite(LED_BUILTIN, LOW); } buttonState ? } ino elegxoi
3 arxeia other.hpp void elegxoi (int buttonState); Program.ino other.cpp #include <Arduino.h> #include "other.hpp #include other.hpp extern bool previousState; long int prevTime = 0; bool flagMessageSent = 0; bool buttonState = 0; bool previousState= 1; void elegxoi (int buttonState){ long int time = millis(); // check if pushbutton is pressed. if it is, the // buttonState is HIGH if (buttonState == LOW ) { // turn LED on digitalWrite(LED_BUILTIN, HIGH); if(previousState==HIGH){ prevTime = time; }else{ if(time-prevTime>=2000 && flagMessageSent==0){ Serial.println("To koumpi path8hike"); flagMessageSent = 1; } void setup() { Serial.begin(9600); pinMode(2, INPUT_PULLUP); pinMode(LED_BUILTIN, OUTPUT); } void loop() { buttonState = digitalRead(2); elegxoi (buttonState); previousState = buttonState; } } } else { // turn LED off //prevTime = time; flagMessageSent =0; digitalWrite(LED_BUILTIN, LOW); } }
