艾鍗教你從實作中認識物聯網！ https://bit.ly/3kLZhAq 課程使用Raspberry Pi結合ARM mbed Cloud來實現一個物聯網解決方案。你會了解M2M(Machine-to-Machine)網路協定,包含CoAP、MQTT、LWM2M等協定，並藉由Raspberry Pi連接 Cloud。 Raspberry Pi的部份教你連接一些感測器，包含GPIO、數位界面I2C的溫溼度感測器、類比感測器如光感應器等，並將這些感測器成為定義為不同的Resource Path並註冊在mbed cloud中。 本課程將採用Node.js撰寫WebAPP，使用HTTP/RESTful API存取Resource。在實作WebAPP中，除了後端Node.js，你也將會看到後端如何與前端瀏覽器之間要如何溝通的方式，如AJAX或WebSocket

1. Getting Started with ARM mbed OS
Joseph Chen
2016/6/24

2. Outline
IoT 技術架構簡介
開源硬體物聯網平台介紹
ARM mbed開發框架介紹
mbed開發快速上手
ARM mbed SDK & API說明 － GPIO + Sensor
mbed開發資源指引
Q&A

3. 3
M2M 通訊協定
IoT 技術架構簡介

4. open hardware platform for IoT
Intel Edison module
ARM mbed Platform
NXP LPC1768 (ARM Cortex M3)
LinkIT Smart 7688/7688 Duo
Raspberry PiArduino Yun
Ameba RTL8195AM

5. ARM mbed Ecosystem
Tools + mbed OS + mbed Device Server

6. mbed Partners

7. mbed Goal

8. ARM mbed IoT Device Platform

9. mbed Elements
mDS is limited to 100 devices, 10,000 events
per hours .

10. ARM mbed IoT Device Platform
mbed Device Connector Service
https://connector.mbed.com/
https://developer.mbed.org

11. mbed Enabled Platform
https://developer.mbed.org/platforms/

14. mbed Device Connector
When the device is powered off, you cannot query the last known state.

15. mbed IoT Device Platform

16. IoT 應用若沒有Business Intelligence
就如同人沒有了靈魂

17. Cloud Fleet www.cloud-tracker.com

18. Tutorial 1:
Getting Started with ARM mbed OS
Joseph Chen

19. What is mbed OS?

20. mbed OS

21. Nucleo F401RE

22. Nucleo F401RE Board features

23. Nucleo F401RE PinOut
Arduino-compatible headers

24. Morpho pinout
Access to all STM32 pins

25. mbed Getting Started
mbed SDK - All about the mbed C/C++ SDK and peripheral libraries
mbed HDK - All about the mbed Hardware Development Kit
mbed Compiler - All about the mbed Online Compiler
mbed Developer Website - All about the mbed Developer Website Tools

26. HDK (Hardware Development Kit)
Hardware design schematics (Eagle format)
Interface binary for the CMSIS-DAP interface

27. CMSIS-DAP
Drag and Drop programming, CMSIS-DAP debugger and USB serial
interface to a range of Cortex-M based microcontrollers.
1) USB Disk “drag and drop”
2) Debug interface using the CMSIS-DAP - Provides full debug
capability with tools like Keil MDK
3) USB Serial interface between the host computer and the target

28. The mbed Tools
mbed Online Compiler
Importing code
Collaboration
• Version control basics
• Pull requests
• Multiple authors
Publishing code
API Documentation
Debug

29. mbed Online Compiler
先申請帳號,然後登入 https://developer.mbed.org

30. API Document for SDK
For all the mbed C/C++ SDK APIs, see the mbed Handbook

31. Debug
• Flash LEDs - Turn LEDs on and off, also to indicate where the program is.
• Debug messages - printf () over the serial port
• Hardware debug: you may use Logical Analyzer or Oscilloscope

32. Source Version Control
Local Revisions
Remote Revisions :
update publish

33. Source Version Control
• Commit a version of your project, and view
the revision history
• View changes a version made,
and compare changes between versions
• Switch and revert to a different version
• Branch and merge version

34. mbed Peripheral Library
Joseph Chen

35. GPIO (General purpose Input/Output)
LED: PA_5
User button: PC_13
• Interrupt by falling edge trigger
PC_13
PA_5

36. PWM
Pulse Width Modulation

37. RC Servo
180度伺服馬達
SG90 訊號定義
50Hz (20ms) period, pulse width range 1.0ms~2.0ms
橘 訊號
紅 5V
棕 GND

38. 1.0ms 角度0度, 1.5ms角度是90度, 2.0ms角度是180度

39. Lab : Servo Motor

40. ADC for Photo Resistor (光敏電阻)

41. ADC Lab: Photo Resistor
printf is send to UART
(CMSIS-DAP)

42. I2C
This interface can be used for communication with a I2C
devices, such as serial memories, sensors and other
modules or integrated circuits
Remember, you will need a pull-up resistor on SDA and SCL

43. 它是一種半雙工的串列式 bus
它是一種廣播式的 bus
三種通訊速度
1) Standard is 100 Kbps
2) Fast-mode is 400 Kbps
3) high-speed mode supports speeds up to 3.4 Mbps
supports 7-bit and 10-bit address
Master-slave communication
43
What is I2C (Inter-IC) ?

44. 44
硬體接線

45. 45
硬體訊號

46. 46
Start and Stop conditions
•

47. 47
Data format
• Every byte put on the SDA line must be 8-bits long.
• Each byte has to be followed by an acknowledge bit.

48. 48
Link level protocol

49. I2C Lab : OLED
https://developer.mbed.org/users/ittraining/code/Nucleo_i2c_OLED/
SSD1306Z, 128x64, 0.94"

50. mbed RTOS
multi-task programming

51. 更多參考資源
ARM mbed Developer Site
• https://developer.mbed.org/
ARM mbed Device Connector
• https://docs.mbed.com/docs/mbed-device-connector-web-interfaces/en/latest/
mbed Device Connector Web API
• https://docs.mbed.com/docs/mbed-device-connector-web-interfaces/en/latest/api-reference/
ARM mbed Client Guide
• https://docs.mbed.com/docs/mbed-client-guide/en/latest/
• Yotta tutorial
• http://yottadocs.mbed.com/tutorial/tutorial.html