BASIC stamp manual v2.2

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5: BASIC Stamp Command Reference – POLLRUN

BASIC Stamp Syntax and Reference Manual 2.2 • www.parallax.com • Page 333

Demo Program (POLLRUN0.bsp)

' POLLRUN0.bsp

' This program demonstrates the POLLRUN command. It is intended to be

' downloaded to program slot 0, and the program called POLLRUN1.bsp

' should be downloaded to program slot 1. I/O pin 0 is set to watch for

' a low signal. Once the Main routine starts running, the program

' continuously prints it's program slot number to the screen. If I/O

' pin 0 goes low, the program in program slot 1 (which should be

' POLLRUN1.bsp) is run.

' {$STAMP BS2p, POLLRUN1.BSP}

' {$PBASIC 2.5}

pgmSlot VAR Byte

Setup:

POLLIN 0, 0 ' polled-input, look for 0

POLLRUN 1 ' run slot 1 on polled activation

POLLMODE 3 ' enable polling

Main:

GET 127, pgmSlot

DEBUG "Running Program #", DEC pgmSlot.LOWNIB, CR

GOTO Main

END

Demo Program (POLLRUN1.bsp)

' POLLRUN1.bsp

' This program demonstrates the POLLRUN command. It is intended to be

' downloaded to program slot 1, and the program called POLLRUN0.bsp

' should be downloaded to program slot 0. This program is run when

' program 0 detects a low on I/O pin 0 via the polled commands.

' {$STAMP BS2p}