SILICA I The Engineers of Distribution 1

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1 1 SILICA I The Engineers of Distribution 1

2 Joe Bungo ARM mbed Hello World 2 SILICA I The Engineers of Distribution 2

3 Agenda ARM Overview Who is ARM? mbed Introduction to mbed Lab 1 mbed registration and hello world demo Lab 2 Rapid prototyping: Creating a file system What you ll need: (download driver and run installer if you have Windows) (download any terminal application if you do not already have one installed) 3 SILICA I The Engineers of Distribution 3

4 ARM Ltd ARM founded in November 1990 Advanced RISC Machines Company headquarters in Cambridge, UK Processor design centers in Cambridge, Austin, and Sophia Antipolis Sales, support, and engineering offices all over the world Best known for its range of RISC processor cores designs Other products fabric IP, software tools, models, cell libraries - to help partners develop and ship ARM-based SoCs ARM does not manufacture silicon More information about ARM and our offices on our web site: 4 SILICA I The Engineers of Distribution 4

5 ARM Connected Community SILICA I The Engineers of Distribution 5

6 Huge Range of Applications IR Fire Detector Tele-parking Intelligent toys Utility Meters Exercise Machines Energy Efficient Appliances Intelligent Vending Equipment Adopting 32-bit ARM Microcontrollers 6 SILICA I The Engineers of Distribution 6

7 Huge Opportunity For ARM Technology 35+ billion processors shipped 100+ billion accumulated after next 7 yrs SILICA I The Engineers of Distribution 7

8 From 1mm 3 to 1km 3 1mm 3 1km 3 10 $1000 Mobile Home Embedded Consumer Mobile Computing Enterprise PC Server HPC 8 SILICA I The Engineers of Distribution 8

9 ARM Cortex Advanced Processors ARM Cortex -A family: Applications processors for featurerich OS and 3 rd party applications ARM Cortex-R family: Embedded processors for real-time signal processing, control applications ARM Cortex-M family: Microcontroller-oriented processors for MCU, ASSP, and SoC applications 9 SILICA I The Engineers of Distribution 9 Cortex-A53 Cortex-A15 Cortex-A9 Cortex-A8 Cortex-A7 Cortex-A5 Cortex-R7 Cortex-R5 Cortex-R4 Cortex-M4 Cortex-M3 Cortex-M1 Cortex-M0 SC300 Cortex-M0+ <12k gates... Cortex-A GHz SC000

10 ARM Cortex family Cortex-A8 Architecture v7a MMU AXI VFP & NEON support Cortex-R4 Architecture v7r MPU (optional) AXI Dual Issue Cortex-M3 Architecture v7m MPU (optional) AHB Lite & APB 10 SILICA I The Engineers of Distribution 10

11 Rapid Prototyping for Microcontrollers 11 SILICA I The Engineers of Distribution 11

12 What s happening in Microcontrollers? Microcontrollers are getting cheap 32-bit ARM Cortex-M3 $1 Microcontrollers are getting powerful Lots of processing, memory, I/O in one package Microcontrollers are getting interactive Internet connectivity, new sensors and actuators Creates new opportunities for microcontrollers 12 SILICA I The Engineers of Distribution 12

13 Opportunities for Microcontrollers Before 1980 computers were used and applied by computer scientists now they are: Applied across all industries Widely used in the home Used by almost anybody Currently microcontroller technology is mainly applied by the embedded professional Microcontrollers interact with the real world Sensors, actuators and communication, define their application Their potential is greater than the home computer 13 SILICA I The Engineers of Distribution 13

14 Barriers for Microcontrollers What prevents microcontrollers from being designed in? Conceptually simple things can be hard to prototype I want to send an SMS when my cat comes through the cat flap Repetition of choices to make: Microcontroller Tool chain Dev board Sensors It s not difficult, but can be tedious and time consuming Overhead for starting a new project Fine for a long complex projects A deterrent for quick experiments and tests 14 SILICA I The Engineers of Distribution 14

15 Rapid Prototyping Rapid Prototyping helps industries create new products Control, communication and interaction increasingly define products Development cycles for microelectronics have not kept pace 3D Moulding 3D Printing 2D/3D Design Web Frameworks 15 SILICA I The Engineers of Distribution 15

16 mbed Rapid Prototyping Platform Complete Hardware, Software and Web 2.0 Solution Dedicated Developer Website Lightweight Online Compiler High-level Peripheral APIs Prototyping Form-Factor 16 SILICA I The Engineers of Distribution 16

17 mbed.org - Rapid Prototyping for MCUs Fastest way to get started with ARM microcontrollers Plug n Play Hardware, Online Compiler Get setup and run Hello World! in 60 seconds Removes entry barriers to MCU technology Focused on rapid prototyping for a diverse audience DIP form-factor, High-level APIs, Developer website Technology and tradeoffs to enable fast experiments Creates new applications for MCU technology Launched at ESC Boston in Sept 2009 with live demo Internet-enabled Twittering Billy read out tweets An embedded internet device, prototyped in ½ day Over ¼ million video views in first week! 17 SILICA I The Engineers of Distribution 17

18 mbed SDK C/C++ SDK for ARM Microcontrollers High-level APIs and standard environment Low level control as needed Portable across different ARM silicon vendor MCUs Built on industry standard technology ANSI/ISO C/C++ CMSIS Compliant Compatible with all major professional MCU tools Open Source Released under permissive Apache 2.0 license Suitable for commercial and non-commercial use Managed, maintained and tested by ARM 18 SILICA I The Engineers of Distribution 18

19 mbed HDK HDK for ARM Microcontroller Boards MCU sub-system and debug interface architecture Includes on-board USB interface Enables standard connection on low-cost boards, starter kits, modules Built on industry standard technology USB Device CMSIS-DAP Debug Interface Protocol Compatible with Windows, Mac, Linux Free for commercial and non-commercial use Portable across different ARM silicon vendor MCUs Developed, tested and maintained by ARM 19 SILICA I The Engineers of Distribution 19

20 mbed-enabled Hardware Expanding range of off-the-shelf mbed-enabled hardware ARM Cortex-M0, M0+, M3 all represented; M4 TBA DIP prototyping modules, Arduino eval board form-factors Available through worldwide distribution $49 $45 Design and production TBA... $13 $20 All boards implement the mbed HDK Hardware is designed and/or made by ARM or 3 rd parties mbed HDK enables anyone to build alternate board designs 20 SILICA I The Engineers of Distribution 20

21 mbed Website Dedicated Developer Web Platform Custom Web 2.0 tools and environment focused on developers Simple route to get started, comprehensive resources and support 21 SILICA I The Engineers of Distribution 21

22 mbed Compiler Lightweight Online Compiler Web 2.0 browser-based IDE with personal workspace in the cloud Nothing to install or configure, login from anywhere Industry leading compilation tools in the back end. It is a real tool 22 SILICA I The Engineers of Distribution 22

23 mbed Library High-level Peripheral APIs Trading memory and CPU performance for ease of use Abstract software interfaces for controlling microcontroller hardware Intuitive peripheral access, encapsulation of implementation details Treat hardware and software the same 23 SILICA I The Engineers of Distribution 23

24 Lab 1 mbed registration and hello world 24 SILICA I The Engineers of Distribution 24

25 Registration mbed microcontroller enumerates as a Mass Storage Device (USB disk) double-click the mbed.htm file on the mbed USB disk Log in or sign up for a new account The mbed microcontroller contains your license to the compiler 25 SILICA I The Engineers of Distribution 25

26 Getting Started Useful resources linked from the first page, including very clear links to Hello World and the Getting Started guide Compiler linked from front page 26 SILICA I The Engineers of Distribution 26

27 Getting started Create or open a project in the Program Workspace Develop code in the text editor Save and compile Compiler outputs Errors and warnings -or- A downloadable binary Save to the USB flash disk 27 SILICA I The Engineers of Distribution 27

28 Getting started Once the file has saved to the flash disk, it needs to be programmed into the microcontroller Press the button on the mbed module Your code will start running! 28 SILICA I The Engineers of Distribution 28

29 Lab 2 Rapid Prototyping: Data Logging 29 SILICA I The Engineers of Distribution 29

30 Example : Data Logging Applications often include data logging capabilities, and access to the data often involves custom software and interface cables. This example shows how standard methods and interfaces can be used to display, save and retrieve data from an application For the purposes of the experiment, we will be displaying and logging noise from an unconnected ADC Touching the pin will influence the noise It is a demonstration, imagine it is real data! 30 SILICA I The Engineers of Distribution 30

31 Example : See the data The USB connection to mbed can also be used to provide a serial port Windows requires a driver, linux and Mac just work -serial-configuration Standard C functions, printf and scanf This example displays 100 samples to a terminal application 31 SILICA I The Engineers of Distribution 31

32 #include mbed.h AnalogIn ain(p20); DigitalOut myled(led1); int main() { for (int i=0; i<300; i++) { printf( %.2f\n\r, ain.read()); wait (0.05); } myled=1; } 32 SILICA I The Engineers of Distribution 32

33 Example : Data Logging The mbed Flash disk is accessible from user code using the LocalFileSystem object Standard C file handling techniques apply fscanf for runtime configuration fprintf for data logging purposes This example logs 100 samples to a CSV file 33 SILICA I The Engineers of Distribution 33

34 #include mbed.h AnalogIn ain(p20); DigitalOut myled(led1); LocalFileSystem fs( fs ); int main() { FILE *fp = fopen( /fs/data.csv, w ); for (int i=0; i<300; i++) { fprintf(fp, %.2f\n, ain.read()); wait (0.05); } fclose(fp); myled=1; } 34 SILICA I The Engineers of Distribution 34

35 Data quickly visible to a PC While the program executes the flash drive disappears from the PC, and returns when the file is closed Logging to a CSV file means Excel can open the file and interpret, manipulate or plot the data. 35 SILICA I The Engineers of Distribution 35

36 Extend it to store lots of data Perhaps a final system might want to store lots of data SD cards are ideal, ubiquitous and recognisable by everyone GND MISO p6 SCL - p7 Vcc MOSI p5 ncs - p8 Hardware for an SD Card is minimal SPI Port connection using simple breakout As before, mbed keeps it simple 36 SILICA I The Engineers of Distribution 36

37 Extend it to store lots of data Import the SDFileSystem Library into the project Include the SDFileSystem header Swap LocalFileSystem for SDFileSystem Everything else remains the same 37 SILICA I The Engineers of Distribution 37

38 What about a USB drive? USB Host hardware is minimal; a USB A connector VCC -> VU D- -> D- D+ -> D+ GND -> GND 38 SILICA I The Engineers of Distribution 38

39 What about a USB drive? On your project, right click -> Import the files for MSCFileSystem Add #include for MSCFileSystem Call it fs, as before The change in storage medium is transparent to the application 39 SILICA I The Engineers of Distribution 39

40 Summary There is huge opportunity for microcontroller applications A major barrier to adoption is simple experimentation mbed helps with getting started and rapid prototyping Fast turnaround of experiments and prototyping new ideas Try out new technology and new ideas Makes the technology very accessible Demo showed a start to finish prototyping example From getting a user started to enabling an application experiment Use at as a tool when you need to experiment! 40 SILICA I The Engineers of Distribution 40

41 Summary A solution focused on prototyping has a broad appeal Engineers new to embedded applications Enables experimentation and testing product ideas for the first time Create designs where electronics and MCUs are not the focus Experienced engineers Provides a way to be more productive in the proof-of-concept stages Introduce 32 bit microcontroller technology to existing designs Marketing, distributors and application engineers Provides a consistent platform for demonstration, evaluation, support Make promotion of MCUs more effective and efficient 41 SILICA I The Engineers of Distribution 41

42 mbed Lab-in-a-Box 42 SILICA I The Engineers of Distribution 42

43 Freedom Lab-in-a-Box 43 SILICA I The Engineers of Distribution 43

44 AUP Registration To keep up with AUP offerings and ARM developments overall, register to the ARM University Programme online: Tell us about your ARM-based activities and feedback on our various offerings

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