/*
 * NAME:  hello-world-to-mods-10steps-r13board

   BY: Paul X. O'Neill on June 24, 2018

   PURPOSE:  Demo program for the Hello-World board from "Electronic Design" week
    where you make a board using Attiny44 without a resonator or crystal.
    You need to set the Tools-Clock to 1MHz or the software serial will not work correctly.
    Once this program is set up, you can use it to demonstrate a Websocket Serial connection to
    MIT CBA/mods
  Software serial multple serial test

  Receives from the hardware serial, sends to software serial.
  Receives from software serial, sends to hardware serial.

  The circuit:
   RX is digital pin 10 (connect to TX of other device)
   TX is digital pin 11 (connect to RX of other device)

  Note:
  Not all pins on the Mega and Mega 2560 support change interrupts,
  so only the following can be used for RX:
  10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69

  Not all pins on the Leonardo and Micro support change interrupts,
  so only the following can be used for RX:
  8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).

  created back in the mists of time
  modified 25 May 2012
  by Tom Igoe
  based on Mikal Hart's example

  Heavily Modified by Paul X. O'Neill for use as a debugging tool when
  troubleshooting serial communications between a board and a laptop, especially
  with MIT Center for Bits and Atoms mods 

  This example code is in the public domain.

*/
#include <SoftwareSerial.h>


int ledPin = 7;    // Built-in LED 13, make 7 when using hello-world board
int max = 10;      // Maximum times to add
int min = 0;        // minimum value of count
int count = 0;      // initialize the counter to zero
int x = 0;
bool direction = true;  // flag for which direction to count.  true=up false=down

SoftwareSerial mySerial(4, 3); // RX, TX

void setup()
{
  // Open serial communications and wait for port to open:
  Serial.begin(19200);
/*  while (!Serial)
  {
    ; // wait for serial port to connect. Needed for native USB port only
  }

*/
  // Serial.println("Test Data for O2 Sensor");

  // set the data rate for the SoftwareSerial port
  mySerial.begin(19200);
//  mySerial.println("Test data?");
}

void loop() { // run over and over
//  Serial.println("First loop...");
  for (int x = 0; x < 10; x++)
    {
      digitalWrite(7, HIGH);   // set built-in led on
      //    Serial.println("Test Data increase for..loop");
      delay(25);                // wait a fraction of a second
      digitalWrite(7, LOW);    // set LED off
      delay(25);
//      Serial.println("Test Data count plus");
      Serial.print(x);
//      Serial.print(":");
      Serial.println("");
    }

//  Serial.println("Second loop....");
  for (int x = 10; x >= 0; x--)
  {
    digitalWrite(7, HIGH);   // set built-in led on
//    Serial.println("Test Data decrease for..loop");
    delay(25);                // wait a fraction of a second
    digitalWrite(7, LOW);    // set LED off
    delay(25);

    count = count - 1;
//    Serial.println("Test Data count minus");
    Serial.print(x);
//    Serial.print(":");
    Serial.println("");
  }

}