Seeed Beaglebone green User manual

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BeagleBone Green
SeeedStudio BeagleBone Green (BBG) is a low cost, open-source, community supported
development platform for developers and hobbyists. It is a joint effort by BeagleBoard.org and
Seeed Studio. It is based on the classical open-source hardware design of BeagleBone Black
and developed into this differentiated version. The BBG includes two Grove connectors, making
it easier to connect to the large family of Grove sensors. The on-board HDMI is removed to
make room for these Grove connectors.
Boot Linux in under 10 seconds and get started on development in less than 5 minutes with just
a single USB cable.

Features
Fully Compatible with BeagleBone Black
Processor: AM335x 1GHz ARMR Cortex-A8
o512MB DDR3 RAM
o4GB 8-bit eMMC on-board flash storage
o3D graphics accelerator
oNEON floating-point accelerator
o2x PRU 32-bit microcontrollers
Connectivity
oUSB client for power & communications
oUSB host
oEthernet
o2x 46 pin headers
o2x Grove connectors (I2C and UART)
Software Compatibility
oDebian
oAndroid
oUbuntu
oCloud9 IDE on Node.js w/ BoneScript library
oplus much more
Specification Item Value
Processor AM335x 1GHz ARMR Cortex-A8
RAM 512MB DDR3
on-board Flash Storage 4GB eMMC
CPU Supports NEON floating-point & 3D graphics accelerator
Micro USB Supports powering & communications
USB Host 1
Grove Connectors 2 (One I2C and One UART)
GPIO 2 x 46 pin headers
Ethernet 1
Operating Temperature 0 ~ 75
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Application Ideas
 Internet of Things
 Smart House
 Industrial
 Automation & Process Control
 Human Machine Interface
 Sensor Hub
 Robot
Here are some funny projects for your reference.
Home Center Retro Lamp Drive a Motor
MAKE IT NOW!
MAKE IT NOW! MAKE IT NOW!
BBG Acrylic Case GPIO Control Smart Light
MAKE IT NOW!
MAKE IT NOW! MAKE IT NOW!

Hardware Overview
USB Host - USB Host
DC Power and USB Client - Power the board and act as client
LEDs
oD2 is configured at boot to blink in a heartbeat pattern
oD3 is configured at boot to light during microSD card accesses
oD4 is configured at boot to light during CPU activity
oD5 is configured at boot to light during eMMC accesses
Boot button
oWhen there's a SD card insert, the system will boot from SD card first, if you want to boot from
eMMC, press this button and then power on.
oUse as a normal button after boot, connect to GPIO_72
I2C Grove Interface - Connected to I2C2
Uart Grove Interface - Connected to UART2
Serial Debug - Connect to UART0, PIN1~PIN6: GND, NC, NC, RX, TX, NC, note that pin1 is
near to the USB.
Pin map
Each digital I/O pin has 8 different modes that can be selected, including GPIO.
65 Possible Digital I/Os
Note
In GPIO mode, each digital I/O can produce interrupts.

PWMs and Timers
Note
Up to 8 digital I/O pins can be configured with pulse-width modulators (PWM) to produce signals
to control motors or create pseudo analog voltage levels, without taking up any extra CPU
cycles.

Analog Inputs
Note
Make sure you don't input more than 1.8V to the analog input pins. This is a single 12-bit
analog-to-digital converter with 8 channels, 7 of which are made available on the headers.

UART
Note
There is a dedicated header for getting to the UART0 pins and connecting a debug cable. Five
additional serial ports are brought to the expansion headers, but one of them only has a single
direction brought to the headers.

I2C
Note
The first I2C bus is utilized for reading EEPROMS on cape add-on boards and can't be used for
other digital I/O operations without interfering with that function, but you can still use it to add
other I2C devices at available addresses. The second I2C bus is available for you to configure
and use.

SPI
Note
For shifting out data fast, you might consider using one of the SPI ports.

Getting Started
Note
This chapter is writing under Win10. The steps are familiar for the other operate systems.
STEP1. Plug in your BBG via USB
Use the provided micro USB cable to plug your BBG into your computer. This will both power
the board and provide a development interface. BBG will boot Linux from the on-board 2GB or
4GB eMMC.
BBG will operate as a flash drive providing you with a local copy of the documentation and
drivers. Note that this interface may not be used to re-configure the microSD card with a new
image, but may be used to update the boot parameters using the uEnv.txt file.
You'll see the PWR LED lit steadily. Within 10 seconds, you should see the other LEDs blinking
in their default configurations.
 D2 is configured at boot to blink in a heartbeat pattern

D3 is configured at boot to light during microSD card accesses
D4 is configured at boot to light during CPU activity
D5 is configured at boot to light during eMMC accesses
STEP2. Install Drivers
Install the drivers for your operating system to give you network-over-USB access to your
Beagle. Additional drivers give you serial access to your board.
Operating System USB Drivers Comments
Windows (64-bit) 64-bit installer
Windows (32-bit) 32-bit installer
Mac OS X Network Serial Install both sets of drivers.
Linux mkudevrule.sh Driver installation isn't required, but you might find a few udev rules
helpful.
Note
For Windows system, please note that:
Windows Driver Certification warning may pop up two or three times. Click "Ignore", "Install" or "Run"
To check if you're running 32 or 64-bit Windows see this.
On systems without the latest service release, you may get an error (0xc000007b). In that case, please
install and retry:
You may need to reboot Windows.
These drivers have been tested to work up to Windows 10
Note
Additional FTDI USB to serial/JTAG information and drivers are available from
https://www.ftdichip.com/Drivers/VCP.htm.
Note
Additional USB to virtual Ethernet information and drivers are available from https://www.linux-
usb.org/gadget/ and https://joshuawise.com/horndis.
STEP3. Browse to your Beagle
Using either Chrome or Firefox (Internet Explorer will NOT work), browse to the web server running on
your board. It will load a presentation showing you the capabilities of the board. Use the arrow keys on
your keyboard to navigate the presentation.
Click http://192.168.7.2 to launch to your BBG. Older software images require you to EJECT the
BEAGLE_BONE drive to start the network. With the latest software image, that step is no longer required.

STEP4. Cloud9 IDE
To begin editing programs that live on your board, you can use the Cloud9 IDE by click
Update to latest software
You need to update the board to latest software to keep a better performance, here we will show you how to make it step by step.
STEP1. Download the latest software image
First of all, you have to download the suitable image here.
Note
Due to sizing necessities, this download may take about 30 minutes or more.
The file you download will have an .img.xz extension. This is a compressed sector-by-sector image of the SD card.
STEP2. Install compression utility and decompress the image
Download and install 7-zip.

Note
Choose a version that suitable for your system.
Use 7-zip to decompress the SD card .img file
STEP3. Install SD card programming utility
Download and install Image Writer for Windows. Be sure to download the binary distribution.
STEP4. Write the image to your SD card
You need a SD adapter to connect your microSD card to your computer at the first. Then use the software Image Write for Windows to write
the decompressed image to your SD card.
Click on Write button, then the process is started.
Note
 You may see a warning about damaging your device. This is fine to accept as long as you are pointing to your SD card for writing.
 You should not have your BeagleBone connected to your computer at this time.
 This process may need up to 10 minutes.

STEP5. Boot your board off of the SD card
Insert SD card into your (powered-down first) board. Then the board will boot from the SD card.
Note
If you don't need to write the image to your on-board eMMC, you don't need to read the last of this chapter. Otherwise please go ahead.
If you desire to write the image to your on-board eMMC, you need to launch to the board, and modify a file.
In /boot/uEnv.txt:
##enable BBB: eMMC Flasher:
#cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh
Change to:
##enable BBB: eMMC Flasher:
cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh
Then you will find the 4 user led light as below
Note
If you don't find the upper tracing light, please press the RESET button to reset the board.
When the flashing is complete, all 4 USRx LEDs will be off. The latest Debian flasher images automatically power down the board upon
completion. This can take up to 10 minutes. Power-down your board, remove the SD card and apply power again to be complete.
Grove for BBG
Grove is a modular, standardized connecter prototyping system. Grove takes a building block approach to assembling electronics. Compared
to the jumper or solder based system, it is easier to connect, experiment and build and simplifies the learning system, but not to the point
where it becomes dumbed down. Some of the other prototype systems out there takes the level down to building blocks. Good stuff to be
learned that way, but the Grove system allows you to build real systems. It requires some learning and expertise to hook things up.

Below listed the Grove modules that work well with BBG.
SKU Name Interface link
101020054 Grove - 3-Axis Digital Accelerometer(+16g) I2C link
101020071 Grove - 3-Axis Digital Accelerometer(+400g) I2C link
101020034 Grove - 3-Axis Digital Compass I2C link
101020050 Grove - 3-Axis Digital Gyro Analog link
101020081 Grove - 6-Axis Accelerometer&Compass v2.0 I2C link
101020072 Grove - Barometer Sensor(BMP180) I2C link
104030010 Grove - Blue LED I/O link
101020003 Grove - Button I/O link
111020000 Grove - Button(P) I/O link
107020000 Grove - Buzzer I/O link
104030006 Grove - Chainable RGB LED I2C link
101020030 Grove - Digital Light Sensor I2C link
103020024 Grove - Finger-clip Heart Rate Sensor I2C link
101020082 Grove - Finger-clip Heart Rate Sensor with shell I2C link
113020003 Grove - GPS UART link
104030007 Grove - Green LED I/O link
103020013 Grove - I2C ADC I2C link
103020006 Grove - I2C Hub I2C link
101020079 Grove - IMU 10DOF I2C link
101020080 Grove - IMU 9DOF v2.0 I2C link
101020040 Grove - IR Distance Interrupter I/O link
104030011 Grove - OLED Display 0.96'' I2C link

SKU Name Interface link
104030008 Grove - OLED Display 1.12'' I2C link
104030005 Grove - Red LED I/O link
103020005 Grove - Relay I/O link
316010005 Grove - Servo I/O link
101020023 Grove - Sound Sensor Analog link
101020004 Grove - Switch(P) I/O link
101020015 Grove - Temperature Sensor Analog link
101020019 Grove - Temperature&Humidity Sensor Pro Analog link
Cape for BBG
You will need some expansion board when you start a project. There're many cape for BBG already, they include LCD display, motor driver
as well as HDMI expansion etc. Below is some of them recommend.
Grove Cape Motor Bridge Cape HDMI Cape
GET ONE NOW! GET ONE NOW! GET ONE NOW!
Grove Cape 5 Inch LCD 7 Inch LCD

Grove Cape Motor Bridge Cape HDMI Cape
GET ONE NOW!
GET ONE NOW! GET ONE NOW!
FAQ
1. What is the different between BBG 1 and BBG 2?
We have updated the eMMC on Beaglebone Green in 2016. So the previous firmware for BBG1 is not workable on BBG2, but the new
firmware is ok on BBG1 and BBG2.
2. Sometimes the BBG's network port does not work and must be restarted to resume work. Occasionally this happens.
Please replace a stable power supply and try again. Usually mobile phone USB power adapter is more stable than that computer USB. Or
you can remove the capacitor C162.

References
There're many references to help you to get more information about the board.
BeagleBoard Main Page
BeagleBone Green info at BeagleBoard page
BeagleBoard Getting Started
Troubleshooting
Hardware documentation
Projects of BeagleBoard
CE certification of BBG
FCC certification of BBG

Resources
•[PDF] BEAGLEBONE_GREEN SRM(v1a)(pdf)
•[PDF] BEAGLEBONE_GREEN SRM(v3)(pdf)
•[PDF] BEAGLEBONE_GREEN Schematic(pdf)
•[RAR] BEAGLEBONE_GREEN Schematic(OrCAD)
•[RAR] BEAGLEBONE_GREEN PCB(OrCAD)
•[Zip] AM335X Datasheet
Tech Support
Please do not hesitate to contact [email protected] if you have any technical issue. Or
submit the issue into our forum.
http://wiki.seeedstudio.com/BeagleBone_Green/ 7-26-18