When baudrate be set at 4800, the data sent from the
ZigBee transceiver can be received by the computer, but the
data received does not match the data sent. While the data sent
from the wifi transceiver can not be accepted by the ZigBee
transceiver. During the experiments, when baudrate set at
9600 we can see that the data sent in accordance with the data
received, from both of ZigBee transceiver and wifi
transceiver. While baudrate at 19200 bps, data transmission
has an error.