Dragon board 410c workshop - slideshow

Pre-Hack series
June 2016
DragonBoard™ 410c
Workshop
Author: Robert Wolff

Who am I?
● Robert Wolff
● Engineer - Technical Writer for 96Boards at Linaro
▣ University of California, San Diego - 2015
▣ Electrical Engineering - Digital Signal Processing
▣ Qualcomm Institute - Coursera IoT Specialization
Twitter: @sdrobertw
Email: Robert.wolff@linaro.org
Github: https://github.com/sdrobertw

Qualcomm Institute - Calit2 @ UCSD
● Coursera IoT specialization - Six Courses
● Focused on DragonBoard 410c
● History of IoT
● Board bring up
● Sensing and Actuation
● Communications Technologies
● Multimedia Technologies
● Capstone - Self sustainable DB410c
workstation/surveillance
● https://www.coursera.org/specializations/internet-of-things

Today’s Outline
● Introductions - Linaro and 96Boards
● DragonBoard 410c
○ What is it, how can I use it?
○ Board layout and components
● Resources
○ Software and Documentation
● “Hands-on” Preparations
○ Debian and Android preparations
○ Low speed expansion header
○ Other components
● Demos
○ GPIO and I2C

What is Linaro?
➢ Founded June 2010
● Unites the Industry and Open Source community
● Work together on key projects
● Deliver great tools
● Reduce industry wide fragmentation and redundant effort
● Provide common software foundations
● http://www.linaro.org/about/
● https://en.wikipedia.org/wiki/Linaro

What is 96Boards?
➢ Founded February 2015
● Series of open hardware specifications
● ARM 32-bit and 64-bit developer boards
● Community enabled open source software development
● http://www.96boards.org
Twitter: @96Boards

About the DragonBoard 410c

➢ Single Board Computer (SBC)
▣ A full computer built on a single printed circuit board (PCB)
▣ Includes: Microprocessor, Memory, I/O, and more
essentials…
▣ Demonstration, development, education, embedded
controllers
▣ Generally does not rely on expansion slots
What is the DragonBoard 410c?

Important Board Components
1. Qualcomm ® Snapdragon™ 410 processor
2. 1GB RAM, 8GB SanDisk eMMC storage
3. WLAN 802.11n, GPS, Bluetooth 4.1
4. MicroSD™ card slot and dip switches
5. Two USB 2.0 ports
6. Micro USB port
7. 40 pin expansion header
8. 16 pin analog expansion connector
9. 60 pin high speed connectors
10. Power button
11. DC barrel jack
12. HDMI port
512
9
7
6
8 11
2
3
10
1
4

1) (J8) Low-speed Expansion Connector: Used for many projects in Course 3. Contains many GPIO
interfaces such as: GPIO, UART, I2C, I2S, SPI and PCM.
2) APQ8016 Snapdragon Processor: Quad-core ARM® Cortex® A53 at up to 1.2 GHz per core with
both 32-bit and 64-bit support
3) (U9) Power Management PMIC: PMIC stands for Power Management Integrated Circuit. The PMIC
controls the flow and direction of power and allows boards like the DragonBoard™ 410c to have a
variety of internal and external voltages sources.
4) (J7) Analog Expansion Connector: The DragonBoard™ 410c analog header give access to audio
and microphone capabilities.
5) WLAN/Bluetooth/GPS: Wireless Local Area Network: used to link one or more computers together,
Bluetooth: short-range, low power way to connect devices, GPS: Global Positioning System uses radio
navigations to determine an exact location.
6) (J1) Power Jack: Capable of DC inputs ranging from 6.5V to 18V with 2000mA current. These
courses will use an adapter with 12V and 2000mA.
7) (J5) uSD Card Socket: Socket used for accessing microSD

8) (J6) HDMI Type A Port: Male plug with 19 pins. Outside dimensions are 13.9 mm × 4.45 mm and
inside dimensions are 14 mm × 4.55 mm.
9) (J9) High Speed Connector: The 60-pin expansion header on the DragonBoard™ 410c contains:
4L MIPI-DSI, USB, I2C x2, 2L+4L MIPI-CSI
10) (J4) Micro USB Type B Connector: USB stands for Universal Serial Bus. The Micro USB type B
on the DragonBoard™ 410c is compatible with the standard type A USB which connects to a PC host.
11) Bluetooth/WLAN LED’s: LED’s used for monitoring the status of the Bluetooth and WLAN
capabilities
12) (J3) USB Host2 Connector: Standard USB type A used for interfacing with the DragonBoard™
410c. Typically used for Mouse, Keyboard or USB Flash drive
13) : User LED’s 1-4: These LED’s are driven directly by the SoC (System on Chip)
14) (J2) USB Host1 Connector: Standard USB type A used for interfacing with the DragonBoard™
410c. Typically used for Mouse, Keyboard or USB Flash drive

15) (S3-4) Vol+/Vol- Buttons: These buttons are used to toggle volume while in the Android
OS. The Vol- button can also be used to bring the DragonBoard™ 410c into Fastboot mode.
16) (S2) Power Button: Similar to a smartphone’s “lock button” it is primarily used while in
Android OS. Button will toggle sleep/wake up and is also used to power down.
17) Bluetooth/WLAN Antenna: Helps increase maximum reach for both Bluetooth and
WLAN.
18) GPS Antenna: Helps to increase maximum reach for GPS
19) (S6) Boot Switches: Found on the back side of the board, used to control the boot
sequence of the board.

● Next generation robotics
● Cameras
● Medical devices
● Vending machines
● Smart buildings
● Digital signage
● Casino gaming consoles
● Much more...
Uses for the DragonBoard 410c

Uses for the DragonBoard 410c
● Snapdragon Cargo
● Snapdragon Rover
● Snapdragon Drone
○ Flight™
➢ Control motors
➢ Feedback loops
➢ Interrupts
➢ Read security inputs
➢ Link
Author: Robert
Wolff

Resources

● Android
● Debian
● OpenEmbedded
● Windows 10 IoT Core
● Ubuntu Core
● More to come...
Software

Documentation
● Static and dynamic
● Github repository and website
● Contributions welcome!
● DB410c Landing page
● Github
● Website Rendering
Sample Code
● DBOpenSource
● 96Boards github
● Coursera IoT-410c Author: Robert Wolff

96Boards blogs
● Weekly reading
● Out of the box experience - Series
● Broad subject matter
● Beginner to advanced subjects
● http://www.96boards.org/blog/

● Real time chat / video
● Linaro and 96Boards developers
● Coffee hour - fun and informative
● Interactive
● Weekly countdown!
● YouTube Channel
Open Hours

Open Hours
● Wrap up software in a complete filesystem
● Contains all necessities to run code, runtime,
system tools, system libraries - anything can
install on a server.
● Always runs the same regardless of
environment it is running in.
Guest: Bill Fletcher, Linaro - Field Engineering
➢ https://www.docker.com/what-docker

● Real time chat
● Linaro and 96Boards developers
● https://webchat.freenode.net
● https://www.irccloud.com
● My handle: sdrobertw
Freenode IRC

● Community and Developers
● Forum topic search
● FAQ available
● DragonBoard 410c Forum
Forums

● Documentation:
○ DB410c Landing page
○ Github
○ Website Rendering
● 96Boards Blogs
○ http://www.96boards.org/blog/
● Open Hours
○ Weekly countdown!
○ YouTube Channel
● Forums
○ DragonBoard 410c Forum
Resources on one page

“Hands on” preparations
Operating Systems and Debugging

SD Card Method
● Download image
● Follow SD card install instructions
Download and Install Debian
SD Card Method
● Download image
● Follow SD card install instructions
ADB and Fastboot set up: https://www.youtube.com/watch?v=W_zlydVBftA
Download and Install Android

Fastboot mode
● Board is power “off”
● Press and hold (-) button down
● Power “on” the board
● Continue holding the button for ~5
seconds
● Release and issue the command
./fastboot devices and your board
should be there Author: Robert Wolff

USB Debugging
1 - Access applications and click “Settings”
2 - Click “About Phone”
3 - Locate “Build number”
4 - Click “Build number” seven times
5 - “You are now a developer!”
6 - Access “Developer options”
7 - Check “USB debugging”

Low-Speed Expansion Header

Pin Layout
2 - SPI
3 - I2C
4 - UART
1 - GPIO and MPP
5 - PCM

Pin Layout
1
40

Pin Layout
Ground Ground
GroundGround

Pin Layout
1.8 V
SYS_DCIN
5 V

Pin Layout
GPIO GPIO
I2C

Low Speed header diagram
Low Speed Expansion Header

Mezzanine Boards

96Boards Sensors Mezzanine - LINK
● Arduino IDE enabled
● Seperate Arduino pins
● Serial Console available
● GPIO breakout
● I2C breakout
● SPI breakout
● Power and reset button

Arrow LinkSprite Mezzanine - LINK
● ADC chip for analog modules
● Variable 3.3V/5.0V
● GPIO breakout
● I2C breakout
● SPI breakout
● UART breakout

Demo 1: Access GPIO through Terminal

Low Speed header diagram
Low Speed Expansion Header
Pinouts

1. Update & Upgrade system
$ sudo apt-get update
$ sudo apt-get upgrade
$ sudo apt-get dist-upgrade
2. Super user to GPIO folder
$ sudo su
# cd /sys/class/gpio
3. Export, direction, value…
# echo GPIO_# > export
# cd gpio(GPIO_#)
# echo “out/in” > direction
# echo 0/1 > value
4. Profit!!! (Next we look at libraries)
Demo #1 on one page - LINK

Demo 2: Access GPIO with Libraries

$ sudo apt-get dist-upgrade -u
2. Install Libraries
$ sudo apt-get install libsoc-dev libmraa0 libmraa-dev libump0 libupm-dev
3. Install Dependencies
$ sudo apt-get install git
4. Clone sample code
$ git clone https://github.com/davidmandala/library_test.git
5. Compile and run
$ cd library_test
$ gcc AC-ledSOC.c -o AC-ledSOC -lsoc
$ sudo ./AC-ledSOC
6. Profit!!! (Next we look at I2C)

Demo 3: Access I2C with Libraries

$ sudo apt-get dist-upgrade -u
2. Install Libraries
$ sudo apt-get install libmraa0 libmraa-dev libump0 libupm-dev
3. Install Dependencies
$ sudo apt-get install git
4. Clone sample code
$ git clone https://github.com/96boards/Starter_Kit_for_96Boards
5. Compile and run
$ cd Starter_Kit_for_96Boards
$ make
$ sudo ./rgb_lcd_demo
6. Profit!!! (Next we look at I2C)

./adb root
./adb remount
mount -o rw,remount /system
exit out of adb shell
./adb pull /etc/init.qcom.post_boot.sh
(add to the post_boot.sh)
set -A pins 938 915 1017 926 937 930 914 971 901 936 935
for i in 0 1 2 3 4 5 6 7 8 9 10
do
echo ${pins[i]} > /sys/class/gpio/export
chmod 777 /sys/class/gpio/gpio${pins[i]}
chmod 777 /sys/class/gpio/gpio${pins[i]}/value
chmod 777 /sys/class/gpio/gpio${pins[i]}/direction
done
./adb push init.qcom.post_boot.sh /etc/init.qcom.post_boot.sh
./adb reboot
./adb root
./adb shell
cd /sys/class/gpio (to check if they’re their)
GPIO Access with Android OS

Dragon board 410c workshop - slideshow

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