INTRODUCTION
The SP2 is a self-contained plug-on radio port which
requires only a simple antenna, 5V supply and a byte-wide I/O port on a
host microcontroller (or bi-directional PC port). The module provides all
the RF circuits and processor intensive low level packet formatting and
packet recovery functions required to interconnect an number of microcontrollers
in a radio network.
A data packet of 1 to 60 bytes downloaded by a Host microcontroller into
the SP2's packet buffer is transmitted by the SP2's transceiver and will
"appear" in the receive buffer of all the SP2's within radio range.
A data packet received by the SP2's transceiver is decoded, stored in a
packet buffer and the Host microcontroller signaled that a valid packet
is waiting to be uploaded.
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