05. Embedded Programming¶
###### Tasks - Group assignment - Demonstrate and compare the toolchains and development workflows for available embedded architectures - Document your work to the group work page and reflect on your individual page what you learned - Individual assignments - Browse through the data sheet for a microcontroller - Write and test a program for an embedded system using a microcontroller to interact (with input &/or output devices) & communicate (with wired or wireless connections) - Extra credit - Assemble the system - Try different languages &/or development environments ###### Key Terms PWM : Pulse Width Modulation - digital / analogue signalling in cycles PCB : Printed Circuet Board ICs : Integrated Circuet (Processor) Firmware : Built in to program the hardware Compile : Transfer instructions into assembly language Toolchain : What runs to put code on controller
¶
Outline¶
LED = A/Positive/bent leg/red C/Negative/straight/black
Class¶
Arduino -C : To compile micro Python : To interperate
Arduino¶
Install¶
1. Download Arduino IDE
2. File - Preferences
to install boards add URLS from guide on individual lines
[Download](https://www.arduino.cc/en/software/#ide)
3. Board manager - Install esp 32 s3
4. Compile sketch
Structure¶
Void Setup (){
//code here runs once
}
Void loop (){
//notes for humans
tone (pin, frequency, milliseconds);
delay (time); // Wait time for next instruction
}
Examples¶
Wokwi ESP32(-S3) Simulator Wokwi
Display changing message on screen¶
Variable pin response¶
Application¶
SOS Beeps¶
3 long beeps . 3 short beeps . 3 long beeps
Will repeat on loop until other instructions are given/power is stopped
SOS Flashes¶
Adding an LED that flashes the morse code for SOS
###### Notes Page 62 11/02/2026 Wednesday Lectures Embedded programming PWM - Pulse Width Modulation digital / analog signaling in cycles * Modify existing code • Assembly laungage - pios/old simple • C 'level' - efficient mid level • Python - more energy, more instructions Thorny • Arduino for implimenting processes • Xiao easier implimenting board • Wokai - processor Simulator Rasberry Pi. Data sheet Tool chain installed & loading code Programming microcontroller ------------------------------------- Page 63 - 66 12/02/2026 Thursday Class A mechanical process that makes analogue movements into digital calculations PCB - Printed Circuet Board ICs - Integrated Circuet (Processor) Program ~ CPU ~ Data Firmware - Built in to program the hardware Arduino -C To compile micro Python - To interperate Compile - transfer instructions into assembly laungage Toolchain- stuff that runs to put code on controller 1. Download Arduino IDE 2. File - Preferences to install boards URLS on guide, use individual lines 3. Board manager - Install esp 32 *if processing timeout to short change arduino-cli.yaml 4. Compile sketch *[](../images/week0/.jpg) Void Setup (){ //code here runs once } Void loop (){ //notes for humans tone (pin, frequency, milliseconds); delay (time); // Wait time for next instruction } Wokwi- ESP32 - S3 Class - uppercase e. g. Serial Function- no cap e. g. delay Pin = location (ref data sheet for pin number) *add new parts in simulation window Black = Ground (?low) Red = Pin (?high) Arduino can have built in parts, check reference for inputs assigned to specific pins Barduino - inputs/outputs Barca modified practice Arduino * multiple gnd don't need defining, all must be grounded individually or as a functional loop LED = A/Positive/bent leg/red C/Negative/straight/black always on e.g. 3V3,to be variable, assign pin with red, black stays on ground Voltage: High=Positive Low=Negative ?O=Ground electricity flows high to low LED on/off Activate Pin: Void setup pinMode (pin, OUTPUT); VoidLoop digitalWrite(pin, HIGH); tone... delay… Serial.println ("Hey!"); digitalWrite (pin, Low); Serial.begin //open communication with computer Serial = processor e.g.screen Setup int isButtonPressed = digitalRead (0); Serial.println (isButtonPressed); //send info back to processor Loop Serial.beginl(); pinMode (0, INPUT);