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larny
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Joined: 31/10/2011
Location: Australia
Posts: 349

Posted: 08:56pm 01 Feb 2016

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I wrote the programme below in order to test the Maximite interface hardware that I designed & built.

It is intended to light LEDs in sequence - LED1 for 3 seconds, then LED1 goes off & LED2 lights, etc.

But, when I ran the programme, all LEDs remained dark. So I removed the interface & connected my DMM to one of the outputs. But the voltage remains at 0 when the appropriate output is supposed to be high.

I can't see anything wrong with the programme.

I ran the datalog.bas programme. It detects & displays the voltage at each of the pins 1 ~ 10. So I don't think there is anything wrong with the Maximite.

Any assistance will be appreciated.

100 FOR i = 1 TO 20 : SETPIN i, DOUT : NEXT i 'DOUT or 8 for digital outputs
110 'Pins 1 ~ 20 digital outputs
120 PRINT "Start" : PRINT
130 For i=1 to 20
140 PIN(i)=1
150 PRINT i,
160 Pause 3000
170 PIN(i)=0
180 NEXT i
190 PRINT "Stop"
200 end

Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 10036

Posted: 09:05pm 01 Feb 2016

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I don't think you can use the setpin command in a loop like that, can you?

IE: You have to define your setpin commands separately, one after another.

Smoke makes things work. When the smoke gets out, it stops!

TassyJim

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Joined: 07/08/2011
Location: Australia
Posts: 6603

Posted: 09:19pm 01 Feb 2016

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What version of MMBasic are you using?

Line numbers suggests an early version.

DOUT was only introduced in later versions so try

100 FOR i = 1 TO 20 : SETPIN i, 8 : NEXT i 'DOUT or 8 for digital outputs

Jim

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larny
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Joined: 31/10/2011
Location: Australia
Posts: 349

Posted: 11:34pm 01 Feb 2016

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TassyJim said What version of MMBasic are you using?

Line numbers suggests an early version.

DOUT was only introduced in later versions so try

100 FOR i = 1 TO 20 : SETPIN i, 8 : NEXT i 'DOUT or 8 for digital outputs

Jim

Thanks Jim,
That worked. I have MM Version 2.7B. I have not used the MM for about 2 years.

Thanks for the responses.

Len

twofingers

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Joined: 02/06/2014
Location: Germany
Posts: 1769

Posted: 01:40am 02 Feb 2016

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Hi Len,

Quote I have MM Version 2.7B.

I strongly recommend the latest MMBasic version (4.5). It's very easy to update.

Regards
Michael

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larny
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Joined: 31/10/2011
Location: Australia
Posts: 349

Posted: 12:36pm 02 Feb 2016

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twofingers said Hi Len,

Quote I have MM Version 2.7B.

I strongly recommend the latest MMBasic version (4.5). It's very easy to update.

Regards
Michael

Thanks Michael,
I have downloaded the 4.5 version. I'll install it shortly.
Regards, Len

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