Posted by Lisbeth Spencer, August 20, 2019
Jump Start Your SX-59HLS-EVK with These Tips
If you are interested in evaluating Silex's SX-59HLS, and would like quick information to help get your project started, look no further.
Note: for a downloadable version of this guide, click here.
Below are the quick steps you'll need to follow to optimize your evaluation.
What you’ll need:
- A windows 10 machine
- An installation of terminal emulator software, TeraTerm is recommended.
- A micro-USB – USB type A (Android charger) cable
- A wireless network to connect to
- Silex's SX-59HLS-EVK Setup Manual (includes schematic of EVK)
- The AT command set specification
The SX-59HLS is a 3.3V part and should be designed as such, but the EVK is powered via a USB connection, which is 5V. The EVK has a ‘quad’ UART chip from FTDI on it to give access to all 3 UARTs on the SX-59HLS, and can support the maximum baud rate that it supports, 4Mb/s.
Once you have all the equipment listed above, you’ll need to install a USB driver for the FTDI chip that’s on the EVK. This is documented in the SX-59HLS-EVK. Once installed, you plug in the EVK. You should see 3 new Com ports in windows available to you. The first one will be the default UART used to communicate to the SX-59HLS part by default.
Next, you’ll need to open a terminal emulator for 115200 baud, no parity, 8 data bits, 1 stop bit and to send <CR> only. Sending <CR/LF> instead of <CR> will cause issues. Settings for TeraTerm are shown in the SX-59HLS-EVK setup manual.
From here, you should be able to enter commands to the SX-59HLS part and query status, make settings, and connect/disconnect to wireless networks. All of the AT commands are documented in the AT command set specification.
Some basic commands broken down by type (for all commands, refer to the AT command set specification) :
STA connection commands:
ATWA connect to an open network
ATWAWPA connect to a WPA PSK network
ATWAWPS connect to an AP using WPs push button or PIN method
ATWALEAP connect to an enterprise network using LEAP
ATWAEAPFAST connect to an enterprise network using EAP-FAST
ATWAEAPPEAP connect to an enterprise network using PEAP
ATWAEAPTLS connect to an enterprise network using EAP-TLS
ATWAEAPTTLS connect to an enterprise network using EAP-TTLS
AP connection commands: (will support up to 10 clients connected to it, but enterprise security is not supported)
ATWAP create an open network AP
ATWAPWPA create a WPA PSK network AP
Other wireless commands:
ATWS scan for what networks it sees across all channels
ATW display current connection status
ATWRSSI display current RSSI reading for current connection
ATWD disconnect from current AP or STA connection
Network/IP settings commands:
ANTSET sets the IP address
ATNDHCP enable/disable DHCP client
ATNDHCPS enable/disable DHCP server
ATNPING ping an address
ATNSOCK set current socket type (UDP, TCP, or SSL)
ATNSOCKINDEX sets the current socket index being used (0-3)
ATNTAGDATA incoming data is for the current SOCKINDEX only, or its tagged with a header to show which socket it comes from
ATNCLOSE close current socket
ATNCTCP create TCP client socket
ATNSTCP create TCP server socket
ATNCUDP create UDP client socket
ATNSUDP create UDP server socket
Here is an explicit example to test some functionality. You should be able to do this with an out of the box EVK.
<CR> means an ‘enter’ or Carriage Return is struck.
At this point, you can connect to an AP named SILEX_TEST with your windows laptop. Right now, the SX-59HLS-EVK is acting like an AP with a certain IP address which will also be a DHCP server for clients that connect to it.
Now try the following:
From here, open a web browser and type: ‘http://192.168.1.1/www.google.com’
You will see a connection message about the socket:
And then you will see the raw HTTP code sent by the browser:
GET /www.google.com HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0
Accept-Encoding: gzip, deflate
Cookie: _ga=GA1.4.435543011.1532539050; lang=en
Did this help you with your SX-59HLS-EVK? Have more questions? We can help.