Silicon Laboratories AMW007 Manual de usuario
UG370: Wireless Xpress AMW007 Kit
User's Guide
The AMW007 evaluation board is an excellent starting point to get familiar with the
AMW007 Wi-Fi module.
The evaluation board includes everything a developer needs to exercise the AMW007’s
UART interface and demonstrate data transfer over Wi-Fi. The board can operate stand-
alone by connecting a PC to the on-board CP2102N USB-to-UART bridge device. Alter-
natively, the board can be connected to a Silicon Labs EFM8 or EFM32 starter kit, where
a EFM8 or EFM32 microntroller can communicate with the AMW007 over UART.
The kit includes the following:
KEY FEATURES
• The AMW007 can connect to an existing
Wi-Fi network or be a Wi-Fi access point.
• UART interface and flow control pins use
Gecko OS command API to connect and
communicate across Wi-Fi
• Breakout test points for easy interface with
prototype boards
• Power sources include USB and EXP
Header
• AMW007 Evaluation Board
• 1 x micro USB cable
• Getting Started card
silabs.com | Building a more connected world. Rev. 1.1
1. Getting Started
Software
To set up the software for the AMW007 kit, either install Simplicity Studio, available at https://www.silabs.com/products/development-
tools/software/simplicity-studio to use Xpress Configurator or install a terminal program (e.g. Tera Term).
For most userss labeled AMW007, it will not be necessary to install a virtual comm port driver in order to interface with the AMW007 kit
using the on-board USB-to-UART bridge. Please see the section below for details.
AMW007 evaluation boards labeled AMW007-E04.2 or higher that are connected to Windows and Linux machines should be config-
ured to this driver automatically. However, if the board is not automatically recognized by the operating system, please download and
install the latest version of the CP210x VCP driver: https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-
drivers
Hardware
To set up the hardware for the AMW007 kit:
1. Connect the micro USB cable to AMW007 board and the other end to the PC.
2. Ensure the two blue LEDs labeled USB and 5V near the USB connector are on.
3. Connect to the virtual COM port using the terminal program.
• For Windows, use a terminal program (e.g. Tera Term) set to 115200, 8N1.
• For a Mac, the terminal can be accessed using [tty.usbserial]. There may be a modifier at the end of this for your computer.
Type [tty.usbserial_modifier 115200,8n1] to set the connection to the right settings. If using a utility like CoolTerm, make sure
the settings are configured to 115200, 8N1.
Note that AMW007 kits labeled AMW007-E04.2 and higher that are connected to Windows or Linux machines do not require a driver to
be installed in order to communicate with the board. However, if using a Mac or if the driver does not automatically install, please down-
load and install the driver from https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers.
UG370: Wireless Xpress AMW007 Kit User's Guide
Getting Started
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Check the Version
After connecting the board to the PC and opening the terminal program, press the [[RESET]] button on the board. You should see a
header with the version information for the device. Ensure this version is 2.1.5 or newer. If you find you are using an older version of
firmware, perform an over the air update on the board as described on docs.silabs.com.
help
The [help] command provides information both for commands and variables on the device.
Variables are system-level variables that determine the configuration of the AMW007 module.
Commands are actions that can be taken.
1. Type [help] to see the options for the help command.
2. Type [help commands] to see a list of commands supported by this module.
Figure 1.1. help
Commands used:
•https://docs.silabs.com/gecko-os/latest/cmd/commands#help
UG370: Wireless Xpress AMW007 Kit User's Guide
Getting Started
silabs.com | Building a more connected world. Rev. 1.1 | 3
Claiming Your Device
The Zentri Device Management Service (ZentriDMS) tracks GeckoOS devices, their owners, their firmware configuration and many oth-
er details. The DMS handles Over-the-Air (OTA) updates, providing a secure way to update devices in the field. You need a free DMS
account before using DMS features like OTA.
To create an account go to the DMS Signup page. The DMS username (your email address) and password you register are used when
you claim your device. To claim your device, in the terminal, issue the dms claim command:
GeckoOS command Description
dms claim YOUR_DMS_USERNAME YOUR_DMS_PASSWORD
Request POST /claim
Connecting (https): ota.zentri.com:443
Starting TLS
{"result":"ok"}
claims your device. GeckoOS response shows a successful result
Once you have successfully claimed your device, you can OTA.
Performing an OTA
Use OTA to update to the latest version of your device's GeckoOS product, or to load a development GeckoOS device with a specific
GeckoOS product or version. You need to claim your device before performing an OTA. See above.
To OTA, in the GeckoOS terminal, issue the ota command:
Gecko OS command Description
ota
Disassociated]
UUID: 06413041000000002E0049001951343438333231
Connecting to network
Security type from probe: WPA2-AES
Request POST /ota
Connecting (https): ota.zentri.com:443
Starting TLS
Bundle size: 729088, Free space: 823296, Core size: 425984
Bundle version: ZENTRI-AMW106-3.4.1.0, 2017-09-01T03:14:19Z, ZentriOS-W-3.4.1.0
Updates your device via the DMS
server
GeckoOS displays progress mes-
sages
For full details of the DMS claim and OTA update process, see docs.silabs.com.
UG370: Wireless Xpress AMW007 Kit User's Guide
Getting Started
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2. Kit Block Diagram
An overview of the AMW007 evaluation board is shown in the figure below.
AMW007
Module
2 x Buttons
2 x LEDs
CP2102N
UART-to-
USB bridge
Wi-Fi
UART
USB Micro
Connector
USB Expansion
Header
From PC
Figure 2.1. AMW007 Evaluation Board Block Diagram
UG370: Wireless Xpress AMW007 Kit User's Guide
Kit Block Diagram
silabs.com | Building a more connected world. Rev. 1.1 | 5
3. Kit Hardware Layout
The layout of the AMW007 evaluation board is shown below.
AMW007 Module
CP2102N
USB-to-serial
USB
Expansion Header
Buttons and LEDs
Reset Button
Figure 3.1. AMW007 Evaluation Board Hardware Layout
UG370: Wireless Xpress AMW007 Kit User's Guide
Kit Hardware Layout
silabs.com | Building a more connected world. Rev. 1.1 | 6
4. Power and Operation
4.1 Power Selection
The AMW007 evaluation board is designed to be powered by two different sources:
• External regulator via 5V from USB connector
• External regulator via 5V from expansion header
The figure shows how the different power sources are connected to the AMW007.
AMW
Module
Regulator
USB Micro
Connector
5V
Expansion
Header
3.3V
5V
Automatically
Switches
Figure 4.1. AMW007 Power Supply
When the USB is connected, the AMW007 is powered from the external regulator, and the external regulator is powered by the USB
cable.
The external regulator also be powered externally through the 5V and GND pins of the expansion header when the board is attached to
a power supply or an EFM MCU Starter Kit.
When power is provided through the USB or an external power supply, the AMW007 module can act as a stand alone device. When it
is connected to an EFM MCU Starter Kit through the expansion header, the AMW007 acts as a peripheral to the MCU.
4.2 Stand-alone
In stand-alone mode, the AMW007 on the evaluation board can be communicated with using the USB-to-UART bridge device. Simply
connect to the CP2102N’s virtual COM port in a terminal program and send commands to the AMW007.
Note: By default, the AMW007 communicates at 115200 baud, though this is a configurable setting.
UG370: Wireless Xpress AMW007 Kit User's Guide
Power and Operation
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4.2.1 AMW007 as an Access Point
To set up the AMW007 as an access point using a terminal program:
1. Connect to the AMW007 expansion board's COM port using a terminal program.
2. Set/Get commands access variables that configure operation and features in the device. Type [set setup.web.ssid] to ["GeckoOS
#"], where [#] is a unique SSID that will be easy to see on a list of other SSIDs as shown in Figure 1.3. Ensure this SSID does not
match any nearby SSIDs. Note that you will need quotes around the network name if it contains spaces.
Note: The [Get/Set] commands access variables that configure operation and features in the device. [Get] reads a variable from
RAM and [Set] writes a new value to that variable in RAM.
3. To read the password on the network, call [get setup.web.passkey]. The default password is "password". Set the password for
the network by calling [set setup.web.passkey].
4. Type [save] to save the new SSID values.
Note: The [save] command saves the [ssid] variable to flash.
5. Type [setup web] to enable the module as a Wi-Fi access point.
Note: By default, Gecko OS evaluation boards are configured to enter Setup Web mode when you hold down Button 2, press Re-
set, and continue to hold down Button 2 for at least three seconds.
Figure 4.2. setup web / set setup.web.ssid / save / get setup.web.passkey
UG370: Wireless Xpress AMW007 Kit User's Guide
Power and Operation
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6. Configure GPIO 5 to be an input by executing the command 'gpio_dir 5 in'. Note that this is done to illustrate additional capability in
step 9 of this QSG. This command is not typically required to configure your device.
7. Using your computer or phone, connect to the Gecko OS access point [Gecko OS #] using the password.
Figure 4.3. Connecting to the Gecko OS Access Point
8. Using a web browser, go to setup.com.
9. Click the [GPIOs] area on the left side of the browser.
Figure 4.4. Navigating to the Module's index.html
UG370: Wireless Xpress AMW007 Kit User's Guide
Power and Operation
silabs.com | Building a more connected world. Rev. 1.1 | 9
10. Press and hold the [BUTTON 2] switch on the AMW007 board to change the GPIO toggle on the webpage. Note that the GPIO
state is able to be read because that GPIO was configured as an input earlier in this tutorial.
Figure 4.5. Toggling the GPIO Using the Buttons
Please see https://docs.silabs.com/ for a complete description of all commands and variables used in this tutorial.
4.2.2 Connecting to an Existing Network
Connecting to an Existing Network using a Terminal Program
To connect to an existing Wi-Fi network using a terminal program:
1. Connect to the AMW007 expansion board using a terminal program.
2. If the AMW007 was previously configured as an access point, type [reboot] to disable the AMW007 as an access point.
3. Use the [scan] command to find all the networks in range.
Figure 4.6. scan
Please see https://docs.silabs.com/ for a complete description of all commands and variables used in this tutorial.
UG370: Wireless Xpress AMW007 Kit User's Guide
Power and Operation
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