PBasic question from a newbie

dholl17207

I am just getting familiar with PBasic and was wondering if there was a way to turn on multiple outputs with one command. For instance when I use HIGH 14 etc. it would be nice be able to say HIGH 14, 15, 11 etc. Is this possible? any help would be appreciated. Thanks.

Chris Savage

Hello,

If the direction registers for a group of pins are set to output you can set multiple pins using OUTS (for all 16 pins), OUTL/OUTH (for 8 pins, P0-P7/P8-P15), OUTA/OUTB/OUTC/OUTD (for 4 pins) or OUTx (where x is a pin number, for one pin at a time). Take care.

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Chris Savage
Parallax Tech Support

dholl17207

Hi, Thanks for the info. This will help a lot to simplify my progs . If I use OUTL to set pins 0-7 as outputs and have led's connected to these pins, is there a way to set more than one output high on one command line. I have an eight segment display connected to pins 0-7 and would like to be able to turn on various segments at once to create numbers and letters. To do this I enter as follows.
HIGH 0
HIGH 2
HIGH 3
HIGH 5
HIGH 6

Is there a way to simplify this code block to:

HIGH 0,2,3,5,6 (or something similar) on one line

Thanks.

Chris Savage

OUTL does set 8 pins at once…You can either do something:

OUTL = %10101010

Or you could use a variable…

OUTL = ioByte

…where ioByte is the pattern you want to output.

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Chris Savage
Parallax Tech Support

allanlane5

Typically, I'd do this in "Hexadecimal".

OUTL = $3C, or
OUTL = %00110111

would do what you want.

Also, you could do:

OutBits VAR BYTE

MyVal CON %00110111

OutBits = MyVal
OutL = OutBits

And you could also create an 'alias' to OutL with:

MyPort VAR OutL

MyPort = %00110111

dholl17207

Thanks for the help, I'll give these a try.