aux i/o pins on BS2p40

dwbowen

howdy!

can someone direct me to instructions on how to access the aux pins on a BS2p40?

for example if I want to read a switch on pin 0 I type:

debug home, ? IN0

but what if I want to read a switch on the pin labeled as X0 on the BS2p40SchematicRevD downloaded from parallax?

i tried both:

debug home, ? INXO

and:

debug home, ? IN21


Im sure its something simple Im missing

thanks

Zoot

Seriously, read the Pbasic Manual where all this is explained in extreme detail.

But since you asked, pins on the AUXIO side are accessed *as if* they were also numbered 0-15, but you must "choose" which side you are working with at any given time using the AUXIO and MAINIO commands (IOTERM is cool also for more programmed switches).

i.e.

' mainio side pins
Sonar PIN 0
IRled  PIN 1

' auxio side pins
MotorLeft PIN 0 ' i.e. pin 16
MoroLeft PIN 1 ' i.e. pin 17
'etc

Main:

   MAINIO  ' working with pins on main side, i.e. 0-15
   HIGH Sonar 
   PULSIN Sonar, 1, temp
   FREQOUT IRled, 100, 100 'etc

   AUXIO  ' now i'm working with aux pins, i.e. 16-31, but you *use* pins 0-15 in commands:
   HIGH MotorLeft
   LOW MotorRight

GOTO Main

One note, that in my experience, while slot switches (i.e. RUN x) are fast, pin bank switches are *relatively* slow -- so if you pile them up you will see precious milliseconds start to vaporize. I try to set up my programs so that all the MAINIO work gets done, then all the AUXIO work, so that there are few switches back and forth.

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When the going gets weird, the weird turn pro. -- HST

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