{"id":142,"date":"2018-09-18T16:30:15","date_gmt":"2018-09-18T16:30:15","guid":{"rendered":"http:\/\/blogs.plymouth.ac.uk\/embedded-systems\/?page_id=142"},"modified":"2019-09-23T16:59:14","modified_gmt":"2019-09-23T16:59:14","slug":"topic-1-digital-output","status":"publish","type":"page","link":"https:\/\/blogs.plymouth.ac.uk\/embedded-systems\/microcontrollers\/mbed-os-2\/courses\/embedded-systems-in-context-level-4\/topic-1-digital-output\/","title":{"rendered":"Topic 1 – Digital Output"},"content":{"rendered":"

Intended Learning Outcomes<\/b><\/h1>\n
    \n
  1. Identify the leads of an LED and light via a current limiting resistor.<\/li>\n
  2. Calculate the value of a current limiting resistor given an ideal current<\/li>\n
  3. Use a DVM to measure potential difference in a circuit<\/li>\n
  4. Apply Kirchoffs and Ohms laws to predict voltages and currents in a simple circuit<\/li>\n
  5. Use the C language to drive a single GPIO pin to a given state<\/li>\n<\/ol>\n

    Time Required:\u00a0<\/strong>2 weeks (8 hours lab time + self-study).<\/p>\n

    Welcome<\/b><\/h1>\n

    Welcome to the start of Embedded Systems in Context, a module focused on writing \u201cembedded software\u201d to measure, analyse and control real-world signals and information.\u00a0If you are a Plymouth student, then w<\/span>elcome also to the first semester on your taught programme.<\/p>\n

    This module is a first introduction to the subject of electronics, robotics and software. The focus is on software, written to work in modern electronic systems.\u00a0Before we can even begin writing embedded software, it is important to have some understanding of fundamental electrical principles. Although this is taught elsewhere, it is helpful to cover the information on a needs-basis.<\/p>\n

    \n

    Activity 1.1<\/b><\/h1>\n

    In electronics, we mostly work with one (or both) of the following signal types :<\/p>\n