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