20-101-1221 Rabbit Semiconductor, 20-101-1221 Datasheet - Page 72

• Manufacturer Part Number: 20-101-1221
• Description: RCM4400W (JAPAN TELEC CERTIFIED)
• Manufacturer: Rabbit Semiconductor
• Series: RabbitCore®r

Specifications of 20-101-1221

• Frequency: 2.4GHz
• Modulation Or Protocol: 802.11 b
• Power - Output: 16dBm
• Voltage - Supply: 3.3V
• Current - Receiving: 450mA
• Current - Transmitting: 450mA
• Data Interface: Connector, 2 x 25 Header
• Memory Size: 512K Flash, 1MB SRAM
• Antenna Connector: SMA
• Operating Temperature: -20°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Sensitivity: -
• Data Rate - Maximum: -
• Other names: 316-1147

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The next macro specifies a suitable pre-shared key. The key may be entered either as 64
hexadecimal digits or as an ASCII string of up to 63 characters.
When you assign your own key, there is a good chance of typos since the key is long. It
is advisable to enter the key in this macro first, then copy and paste into your access
point to ensures that both the RCM4400W and the access point have the same key.
Initially, it may be easier to use the 64 hexadecimal digits form of the key rather than
the ASCII passphrase. A passphrase requires considerable computation effort, which
delays the startup of the sample by about 40 seconds.
If you want to add authentication, set the authentication to “open system,” which basi-
cally means that knowing the key is sufficient to allow access.
Change
change the amount of time in milliseconds between the outgoing pings.
Uncomment the
Once you have compiled the sample program and it is running, LED DS2 will flash
when a ping is sent, and LED DS3 will flash when a ping is received.
POWERDOWN.C
Wi-Fi circuit to reduce power consumption. Note that powering down the Wi-Fi portion
of the RCM4400W module results in a loss of the network interface (unlike an Ethernet
connection), and so is only suitable for applications such as data logging where only
intermittent network connectivity is required.
The sample program demonstrates the powerdown operation as a simple sequential
state machine. LED DS2 on the Prototyping Board will be on when the network inter-
face is up, and LED DS3 will be on when the Wi-Fi circuit is powered up.
Before you compile and run this sample program, modify the configuration macros,
including the
down for these intervals.
SMTP.C
the S2 and S3 switches on the Prototyping Board are pressed. LEDs DS2 and DS3 on
the Prototyping Board will light up when e-mail is being sent.
#define _WIFI_PSK_HEX
#define WIFI_AUTH WIFICONF_AUTH_OPEN_SYS
PING_WHO
—This program demonstrates using the SMTP library to send an e-mail when
DOWNTIME
—This program demonstrates how to power down the FPGA chip in the
VERBOSE
to the host you want to ping. You may modify
and the
define to see the incoming ping replies.
UPTIME
values. The interface will be powered up and
RabbitCore RCM4400W
PING_DELAY
to