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Semtech
Wireless & Sensing Products
User Guide for the SX1261 and SX1262 Development Kits
Rev 1.1
UG.DEV.SX126x.W.APP
March 2018
3.
Ping Pong Demo
A Ping Pong Test is a bidirectional test between a pair of SX1261/SX1262 kits. One kit needs to be configured as
the Ping Pong Master and the other kit as the Ping Pong Slave. Communication is initiated by the Master whose
packet is received by the Slave from which the PER may be calculated.
In response to this packet the Slave sends an acknowledgement, which also contains statistical information
about the link calculated by the Slave. The Master, upon receiving this response, will then display both the PER
for the Master to Slave and the Slave to Master packet exchanges.
Press on Demo Ping Pong from the Welcome Display to access this test.
You can change the radio settings from this menu:
Press SETTINGS
to adjust the same radio settings on the Master and the
Slave units. See
Section 6 for more details on the radio settings.
Before starting the test:
-
Place the Slave unit into the desired position
-
Place the Master unit into the desired position
Press SLAVE to toggle a unit to MASTER and vice-versa
To start the Ping Pong test:
Press START first on the Slave unit then on the Master Unit
-
Both units will exchange data until you press STOP on either unit.
The reception and transmission of data are indicated by LEDs on each unit.
-
The result of the test is displayed on the screen of the Master unit:
o
Rx OK : number of packets completely received
o
Rx KO: number of packets not completely received
o
Rx PSR: Percentage Packet Success Rate for the last packet exchange
o
Rx PER: Percentage Packet Error Rate for the last packet exchange
o
Last RSSI: Received Signal Strength Indication [dBm]
o
Last SNR: Signal to Noise Ratio for the last packet exchange [dB]
Figure 4. PING PONG Demo Slave Display
Figure 5: PING PONG Demo Master Display
