SX-550-1701 Silex Technology, SX-550-1701 Datasheet - Page 73

• Manufacturer Part Number: SX-550-1701
• Description: WiFi / 802.11 Modules & Development Tools 802.11a/b/g Bridge Serial Server
• Manufacturer: Silex Technology

Specifications of SX-550-1701

• Interface Type: UART
• Board Size: 59.6 mm x 49.1 mm x 14.3 mm
• Security: 802.1xEAP, PEAP, WEP, WPAPSK, TKIP, WPA2, AES
• Operating Voltage: 3.3 VDC
• Operating Temperature Range: 0 C to + 50 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Part Number 40183-101
The E-GPIO TCP monitor allows a computer system to access the SX-550 GPIO pin values. If
enabled, this monitor will attempt to make a TCP connection to the remote computer specified.
Once connected, the monitor will periodically send the state of the GPIO pins to the remote
computer. This monitor is configured via the console with the following commands:
SET GPIO MON [EN | DIS]
SHOW GPIO MON
SET GPIO ADDR <ip address>
SET GPIO PORT
SET GPIO POLL <period>
GPIO status message format
Command
Table 26 E-GPIO TCP Monitor Commands
Silex SX-550 Developer's Guide
Enables or disables the E-GPIO monitor
Shows the current state of the GPIO monitor.
Sets the IP address of the remote computer for E-
GIO connection
Sets the TCP port on the remote computer for E-
GPIO connection.
Sets E-GPIO poll period. When not connected,
this controls how often the E-GPIO monitor
attempts to make a connection to the remote
computer. When connected, this indicates how
often the E-GPIO monitor will send the GPIO
state to the remote computer.
<period> is the time interval in milliseconds. Note
that this interval will be rounded to the system
clock resolution (10msec). A value less than a
single clock period will result in the default value
of 5000 (5 seconds) being used.
The periodic message sent by the E-GPIO
monitor is a simple text string in the following
format:
GPIO=00ab<LF>
Where ab are 2 hex digits representing the state
of the GPIO pins. Since there are only 8 GPIO
pins on the SX-550, the first two digits are always
0. The message is sent every n milliseconds,
where n is the poll period set by the SET GPIO
POLL command.
Description
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