Week_8 - Embedded Programming

Differences between two Harvad and Von-Neumann architectures

Test

AVR Microcontrollers on Arduino UNO
I programed my board and tested on an Arduino in virtual enviroment in Tinkercad Cirtucts on www.tinercad.com. Since I have already a board made there I decided to reuse it. I will make the old board use the LED supplied already plus additional one and say "HELLO WORLD" in Morse code after pushing the button. So one LED on will be a short signal and two LEDs on will be a long signal.

So 1st thing that I have to do is to add new LED to the current setup.

The new LED is connected with the board via turquoise wire and thats make the board complete and ready to get programed. All is left is to write the code... and yeah, learn Morse Code!!! So lets 1st look at the Morse Code Graph[1].

I will use this graph as a reference for making the code. So lets dig into code! The code we will use C language. I will start from reusing the previous code so I will simply add the new LED as an output on PIN number 4 (turquoise wire).

	
		const int buttonPin = 3; //Pin for the button
	const int LEDPin = 2; //Pin for the LED
	const int LEDPin2 = 4; //Pin for the LED2 (added line)

	void setup()
	{
		pinMode(buttonPin, INPUT); //setting the input PIN
		pinMode(LEDPin, OUTPUT); //setting the output PIN
		pinMode(LEDPin2, OUTPUT); //(added line)
		Serial.begin(9600); // Serial console setup
	}

individual assignment:

THE data Sheet

Data sheet to attiny is quite a thick book and has a function a bit like a phone book we don't need to know it all by heart but we need to know how to move around in it and search for the most important things. And another plus is that there are a lot of colorful pictures, which definitely makes it easier to accept complicated technical knowledge!

Already on page 13 we encounter the most interesting scheme or pinout - it can be compared to the road map:)

Programing in Tinkercad / Arduino

The project was programmed and tested on Tinkercad Circuits emulator using simplified C-coding for Arduino.
The idea of the project was to create a virtual dice which, after pressing a button, will draw any number, and then blinked the LED as many times as it came out when drawing any number between 1 and 8.
First, he defined in the code to which pin the button and LED will be connected and whether there will be input or output.
I connected everything in the diagram using the tutorial on the button.
I created a loop in which if the button is pressed, the program will draw a number between 1 and 8. Once it is drawn, it will repeat a simple code with flashing LEDs.

Code

	
	const int button = 10;
	const int LED = 11;
	int num = 0;

	int counter;

	void setup()
	{
	  pinMode(button, INPUT);
	  pinMode(LED, OUTPUT);
	  Serial.begin(9600);
	}

	void loop()
	{
	  if (digitalRead(button) == HIGH) {
	      num = random(1, 8 + 1);
	Serial.println(num);
	    for (counter = 0; counter < num; ++counter) {
	      digitalWrite(LED, HIGH);
	      delay(250); // Wait for 1000 millisecond(s)
	      digitalWrite(LED, LOW);
	      delay(250); // Wait for 1000 millisecond(s)
	    }
	  }
	}

I thought to myself why not add a 7-segment screen to this project, which would display the numbers drawn! I read an article on how to connect such a display. I found out there which pins to connect with each other and how the segment screen works. Below is some important information when writing the code:

Code

			

			#include "SevSeg.h"
			SevSeg sevseg;

			const int button = 10;
			const int LED = 11;
			int num = 0;

			int counter;

			void setup()
			{
			  pinMode(button, INPUT);
			  pinMode(LED, OUTPUT);
			  Serial.begin(9600);

			  byte numDigits = 1;
			    byte digitPins[] = {};
			    byte segmentPins[] = {6, 5, 2, 3, 4, 7, 8, 9};
			    bool resistorsOnSegments = true;

			    byte hardwareConfig = COMMON_CATHODE;
			    sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments);
			    sevseg.setBrightness(90);
			}

			void loop()
			{
			  if (digitalRead(button) == HIGH) {
			      num = random(1, 8 + 1);
			Serial.println(num);
			sevseg.setNumber(num);
			        sevseg.refreshDisplay();
			    for (counter = 0; counter < num; ++counter) {
			      digitalWrite(LED, HIGH);
			      delay(250); // Wait for 1000 millisecond(s)
			      digitalWrite(LED, LOW);
			      delay(250); // Wait for 1000 millisecond(s)
			    }
			  }
			}
		

all files from projects