Parallax BASIC Stamp 2e - Page 294

SERIN - BASIC Stamp Command Reference
Page 292 • BASIC Stamp Programming Manual 2.0b • www.parallaxinc.com
Demo Program (SERIN-OUT_SENDER.bs2 & SERIN-OUT_RECEIVER.bs2)
' Using two BS2-IC's, connect the circuit shown in the SERIN command description and run
' this program on the BASIC Stamp designated as the Sender. This program demonstrates
' the use of Flow Control (FPin). Without flow control, the sender would transmit the
' whole word "HELLO!" in about 6 ms. The receiver would catch the first byte at most; by
' the time it got back from the first 1-second PAUSE, the rest of the data would be long
' gone. With flow control, communication is flawless since the sender waits for the
' receiver to catch up.
'{$STAMP BS2} 'STAMP directive (specifies a BS2)
Loop:
SEROUT 1\0, 16468, ["HELLO!"] ' Send the greeting.
PAUSE 2500
GOTO Loop
' Using two BS2-IC's, connect the circuit shown in the SERIN command description and run
' this program on the BASIC Stamp designated as the Receiver. This program demonstrates
' the use of Flow Control (FPin). Without flow control, the sender would transmit the
' whole word "HELLO!" in about 6 ms. The receiver would catch the first byte at most; by
' the time it got back from the first 1-second PAUSE, the rest of the data would be long
' gone. With flow control, communication is flawless since the sender waits for the
' receiver to catch up.
Letter VAR BYTE
Again:
SERIN 1\0, 16468, [Letter] ' Get 1 byte.
DEBUG Letter ' Display on screen.
PAUSE 1000 ' Wait a second.
GOTO Again
Case2:
DEBUG "Branched to Case2",cr
GOTO Start
2
e
2
sx
2
p
2
NOTE: This is written for the BS2
but can be used for the BS2e,
BS2sx and BS2p also (with
modifications). Locate the proper
source code file or modify the
STAMP directive and the
Baudmode before downloading to
the BS2e, BS2sx or BS2p.