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Conditionals

CSCE 155H - Fall 2018

• Normally, programs have sequential control flow
• However, more complex problems require decisions
• Conditionals are how we can make some code execute under some condition(s) and/or other, different code to execute under other conditions
• if-statements, if-else statements, if-else-if statements
• Conditionals rely on some logical condition

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Introduction

CSCE 155H, Fall 2018

An overview of basics including variables, input and output in C and Java.

Programming, Compiling & Running Process

• Source file are plain text files containing source code
• Source files are assembled and compiled:

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/**
 * Name: Chris Bourke
 *
 * CSCE 155E Midterm
 *
 * Write a full program to determine if two circles intersect.
 * Details are provided in the midterm handout.
 */
#include <stdlib.h>
#include <stdio.h>

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Microcontroller communication protocol

Goal: overviewing over I2c, serial, and SPI communication protocol. Impotance of communication protocol

Overall idea

• There are multiple microcontroller, and programming language like C, Java, C++,...
• Each has it own strength and weaknesses.
• Question arrive: How can all programming language and microcontroller be unite? How can they work together to create one piece of technology?
• follow up example: If one person is good at C programming languague(Arduino), and one is good at Python(raspberry pi) then how can they work together to create one piece of technology?
• Through universal communication. 3 main:

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ORB (Oriented FAST and Rotated BRIEF)

• COmbination of FAST feature detector and BRIEF descriptor algorithm

  • FAST(Features from Accelerated Segment Test) is a corner deteion algorithm that helps find keypoint.
  • BRIEF is a feature descriptor calculation and matching.(descriptor tell what is unique about a keypoint)

• Theory behind FAST: choose a pixel p. check n surrounding pixels(see image below). p is a corner if there exist a set of n-numbers contigous pixel in the circle which are brighter than p. The idea is that outer corner is brighter than p

  

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@ Author Dat Nguyen. Last modified date. 5/17/19

Introduction

• PHP/java
• Method are part of class.

helloWorld.

package unl.cse // package declaration

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/*csce155e Cbourke

C introduction

1/11/17

• Programming, compiling and running process
• Source files are plain text
• Have to be compile into an excutable program
• Source – assembly – machine code(binary)

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classes = ['dogs','cats']
num_classes = len(classes)

# refer to this link for why need this complicated path declaration 
# https://stackoverflow.com/questions/37619246/python-glob-glob-always-returns-empty-list
train_path = '/home/*datduyn/*Documents/*dataset/*dog-cat/*training_set/'

#validation split

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Weather station

Section

• Overview
• Components
• Wiring
  • troubleshooting on wiring process
• example code.
• Data export
• Interact with thingspeak

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/**
 * This program interact the electron with thingspeak, send data
 * @author Dat Nguyen 
 * Date: 3/7/18
 */
#include <ThingSpeak.h>
#include <Wire.h>
#include "Particle.h"
#include <stdlib.h>