Software Design

 

INTRO

The Software Design follows a similar path as the Hardware Design. Although this series is HW focused, we'll walk through a lite version of the SW Design.

 

Back to Design Series
 

REQUIREMENTS

FUNCTIONS

• Measure Voltage
• Display Voltage
• Select Voltage Range

FEATURES

• Voltage Ranges:  4V, 20V
• Voltage Range Select:  Pushbutton
• Display Upsate Rate:  4 Readings / sec

STRATEGY

• Arduino C Program Structure
• Setup()
  • Excecute once
  • Initialize variables, configure pins, set modes
• Loop()
  • Run continuously
  • Read and Display Voltage
  • Read Pushbutton and Set Vrange
  • Delay

DESIGN

• Arduino IDE (Integrated Development Environment)
  • write, compile, debug, upload C code to Arduino board
• Key Input / Output Statements
  • Write Digital Pins (V Range Switches)
  • Read Digital Pin (V Range Pushbutton)
  • Read Analog Pin (ADC)
  • Serial Print (to PC screen)

FLOW CHART

To assist our coding, let's chart a possible flow for both following the structure and implementing the functions! The best practive here is grabbing a pencil and paper to create a few options.

The code for the Digital Voltmeter for this series is fairly straightforward. One possibility appears below

 

NEXT UP

We are now ready to code the Initial Test of our meter.

Back to Design Series