This week I will program my board to do something. This will involve learning some C code and making use of the arduino environment. Exciting stuff!!

Assignment:

Read a micro-controller data sheet

program the board to do something, with as many different programming languages and programming environments as possible

First thing I did was install the arduino environment (easy!). Then I had to install the necessary files so that the program could also put code onto ATtiny chips. This was done by following this tutorial. After that, Emma, our instructor, gave me a crash course in using the arduino environment and putting some code onto a board (which she did excellently considering I am currently playing catch up!). However when it came to putting code onto my own board we discovered a huge short in the circuit... so huge in fact that it was even in the schematic that I had designed. Below you can see where the short was in the design (pointed out by a crudely drawn arrow):



This was easily rectified. I removed the capacitor, dug out the offending trace with a blade, and put the capacitor back. Amazing what one stray trace can do to an entire board! Below, you can see the offending trace mid-operation.



Once the issue was rectified I came across a rather novelty issue. The lack of compatability between the USB 2.0 of the programmer and the USB 3.0 of my laptop. This was rectified by borrowing a USB extension cable (USB-male to USB-female). The first program I used was the basic example file provided by the software called "Blink". Once the correct pins have been assigned in the code, the LED blinks:

/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the Uno and
  Leonardo, it is attached to digital pin 13. If you're unsure what
  pin the on-board LED is connected to on your Arduino model, check
  the documentation at http://arduino.cc

  This example code is in the public domain.

  modified 8 May 2014
  by Scott Fitzgerald
 */


// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 13 as an output.
  pinMode(13, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second
  digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);              // wait for a second
}

void setup() {
  
  pinMode(7, OUTPUT);
  pinMode(3, INPUT);
}

void loop() {
  if(digitalRead(3) == LOW){
  digitalWrite(7, HIGH);   
  delay(200);              
  digitalWrite(7, LOW);   
  delay(200); }
else{
digitalWrite(7, HIGH);   
  delay(500);              
  digitalWrite(7, LOW); 
  delay(500);
}  
}

#include <SoftwareSerial.h>

SoftwareSerial mySerial(0, 1); // RX, TX
 boolean led_status;

void setup() {

  pinMode(7, OUTPUT);
  pinMode(3, INPUT);
  led_status = false;
  mySerial.begin(9600);
  mySerial.println("Hello, world?");
}


void loop() {

if(digitalRead(3) == LOW){
  
 if(led_status){
  digitalWrite(7, HIGH);
   led_status =false;
   mySerial.println("LED on");
}

else{
  led_status = true;
  digitalWrite(7, LOW);
  mySerial.println("LED off");
}
delay(500);
}




}