SENA Parani-ESD100-110-200-210 - Manual (Page 31)

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A.1.5. Pairing Signal (only for Parani-ESD100/110)
Parani-ESD100/110 provides a pairing signal input for instant configuration and automatic
connection to two Parani-ESDs. In this example, we will name the two Parani-ESDs as ESD1 and
ESD2. In pairing status, Parani-ESD auto change COD value(reference S43, S44).
Step 1. Turn on ESD1 and ESD2 and hardware reset both of them by using RST signal.
Step 2. Set the pairing signal of ESD1 to a low state and hold the signal for 2 seconds.
Step 3. Set the pairing signal of ESD2 to a low state and hold the signal for 2 seconds. Set the
pairing signal of ESD2 to high state and hold the signal for 2 seconds. Now Set the pairing signal
of ESD2 to low state and hold it for 2 seconds
Step 4. Wait for ESD1 & ESD2 to connect to each other. It may take about 10 seconds to make a
connection. If there are many Bluetooth devices nearby, the connection time may increase.
Step 5. At this point your pair of Parani-ESD is configured to make automatic connection to each
other.
You can now use this pair of Parani-ESD’s like virtual serial cable.
* Note: During the pairing process, by way of the pairing signal, the Command Response will be
deactivated. Thus, the Parani-ESD will not send the response messages such as OK, Connect and
Disconnect.
Table A-3 Pairing Process by Pairing Signal
ESD1 Status Pairing Signal ESD2 Status Paring Signal
1. Reset Mode0 HIGH 1. Reset Mode0 HIGH
2. Drop pairing
signal Mode3 LOW 2. Drop pairing
signal Mode3 LOW
3.Restore
pairing signal Mode3 HIGH 3.Restore
pairing signal Mode3 HIGH
4. Drop pairing
signal Mode1 LOW
5.Restore
pairing signal Mode1 HIGH
6. Connected Slave HIGH 6. Connected Master HIGH