Controlling Sensors Efficiently with MCUs MCUs as Sensor Controllers Course Description/Overview: The growing applications of the Internet of Things (IoT) will rely fundamentally on acquiring data from the world around us. Sensors will be used invariably, gathering information on temperature, pressure, light levels, speed, direction, altitude -- the list goes on and on. In most applications, microcontrollers (MCU) will be used to control a variety of sensors while processing sensor data and communicating important results to a centralized monitor. This course will discuss techniques for most efficient sensor control using MCUs, so your designs can be optimized for your application requirements.   Titles for Each Class and 50-word Description: 1) Sensors in the IoT Sensors will be, literally, the eyes and ears of the IoT. This class will describe several common sensors and their requirements for use in efficient MCU-based designs. 2) MCUs as Sensor Controllers This class will review several key MCU features -- like low power, serial communications, and data processing -- that are critical for efficient MCU-based sensor implementations. 3) Example MCU-based Sensor Designs Many MCU manufacturers have targeted sensor designs and provided reference designs and product examples. This class will explore some of these resources that can help you more efficiently implement your designs. 4) More Example Designs This class will continue exploring reference designs and development platforms provided by MCU manufacturers to help you more quickly and efficiently create MCU-based sensor designs. 5) Future Trends This class will review some of the most recent trends in MCU-based sensor designs in order to explore the future types of applications MCUs will need to address and the most likely enhancements they will need to be successful. Sept 15th, 2015 Warren Miller

Course Overview IoT applications will rely fundamentally on acquiring data from the world around us. Sensors will gather information on temperature, pressure, light levels, speed… MCUs will be used to control sensors while processing data and communicating results. This course will discuss techniques for most efficient sensor control using MCUs. Course Description/Overview: The growing applications of the Internet of Things (IoT) will rely fundamentally on acquiring data from the world around us. Sensors will be used invariably, gathering information on temperature, pressure, light levels, speed, direction, altitude -- the list goes on and on. In most applications, microcontrollers (MCU) will be used to control a variety of sensors while processing sensor data and communicating important results to a centralized monitor. This course will discuss techniques for most efficient sensor control using MCUs, so your designs can be optimized for your application requirements.   Titles for Each Class and 50-word Description: 1) Sensors in the IoT Sensors will be, literally, the eyes and ears of the IoT. This class will describe several common sensors and their requirements for use in efficient MCU-based designs. 2) MCUs as Sensor Controllers This class will review several key MCU features -- like low power, serial communications, and data processing -- that are critical for efficient MCU-based sensor implementations. 3) Example MCU-based Sensor Designs Many MCU manufacturers have targeted sensor designs and provided reference designs and product examples. This class will explore some of these resources that can help you more efficiently implement your designs. 4) More Example Designs This class will continue exploring reference designs and development platforms provided by MCU manufacturers to help you more quickly and efficiently create MCU-based sensor designs. 5) Future Trends This class will review some of the most recent trends in MCU-based sensor designs in order to explore the future types of applications MCUs will need to address and the most likely enhancements they will need to be successful.

This Week’s Agenda 9/14/15 Sensors in the IoT 9/15/15 MCUs as Sensor Controllers 9/16/15 Example MCU-based Sensor Designs 9/17/15 More Example Designs 9/18/15 Future Trends 2) MCUs as Sensor Controllers This class will review several key MCU features -- like low power, serial communications, and data processing -- that are critical for efficient MCU-based sensor implementations.

Today’s Goals and Objectives Provide an overview of the key features and functions MCUs need/use for sensor control. What will an MCU do? What are the key features used/needed? Resources and Example Applications 1) Sensors in the IoT Sensors will be, literally, the eyes and ears of the IoT. This class will describe several common sensors and their requirements for use in efficient MCU-based designs.

What is the IoT? Things, people and cloud services getting connected via the Internet to enable new applications and business models Different from M2M Enabling technology- not a market

What Will MCUs Do? Control Data Collection and processing Communications Power management Facilitate energy harvesting

Control Key Features/Functions Implement algorithms Decisions State machines Command parsing and execution Efficiency Peripherals DMA, Event Link Control

Data Collection Key Features/Functions Analog Inputs Serial Interfaces DMA Low Power Modes Buffering Simple Filters (Average, Decimation, etc) Control Timing

Data Processing Key Features/Functions Implement Algorithms Digital Filters, DSP Moving Averages Sensor Fusion Command Processing Floating Point Real-time: Time dependencies Latency Control Loops!

Communications Key Features/Functions Communications standards Simple serial interfaces I2C, SPI Host communications USB, Ethernet, Wireless System interfaces Other devices, FPGAs, etc DMA Buffer memory

Communications- Wireless From TI Portfolio, as an example

Peripherals Key Features/Functions Clocks ADC, DAC Timers Serial Interfaces DMA, Event Link Efficiency Peripherals DMA, Event Link Control

Peripherals- Serial Interfaces Key Features/Functions Flexibility Multiple standards UART, I2C, SPI, etc Autonomous control DMA and Event Link Independent baud rate control Low power Renesas RL78 Serial Array Unit

Energy Harvesting Solar (Photovoltaic) Thermal (TEG) 2W peak for a 160cm2 surface area Thermal (TEG) Thermal to Electrical or Visa Versa Pressure/Vibration (Piezoelectric) 5mW for .1 in displacement at 75Hz 16 grams Air/Fluid Flow Fans in reverse! http://www.linear.com/products/energy_harvesting

Energy Harvesting Key MCU Features/Functions Monitor and Control Energy Source Monitor and Control Storage Other Devices

Resources for Todays Class CEC Courses: ARM Architecture MCU Software Development Embedded Software Design Designing with ARM Cortex-M4 (and a dev board) PIC MCUs Mastering the Embedded Software Development Cycle Getting the Most Out of Low Power MCUs Understanding Smart Sensors Understanding Smart Sensors 2

This Week’s Agenda 9/14/15 Sensors in the IoT 9/15/15 MCUs as Sensor Controllers 9/16/15 Example MCU-based Sensor Designs 9/17/15 More Example Designs 9/18/15 Future Trends