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Grogster

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Posted: 03:11am 30 Mar 2018

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With the PORT function, for reading several pins at once, the manual mentions you can repeat START/NBR can be repeated if another group of pins is needed.

How many times can you repeat that?
I have ten pins I want to read at the same time, but they are all over the place on the chip(44-pin).

Can I just use X=PORT(05,01,13,01,12,01,15,01,19,01,......)?

Is there a limit to the number of times you can repeat the groups(in my case, just specifying one bit rather then consecutive pins), or are you restricted to two groups as the manual suggests on page 78?

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Geoffg

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Posted: 04:00am 30 Mar 2018

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The maximum is 50 arguments or 25 start/nbr pairs. The function is reasonably efficient so you would not slow down your program if you used all 25 pairs.

Geoff

Geoff Graham - http://geoffg.net

Grogster

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Posted: 04:54am 30 Mar 2018

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Awesome, thanks a bunch. I only need ten pairs for each of the ten bits.

Manual reads like you can only have two pairs. I seem to recall that might have been the case in an earlier version of MMBASIC - yes?

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Geoffg

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Posted: 05:58am 30 Mar 2018

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Grogster said Manual reads like you can only have two pairs. I seem to recall that might have been the case in an earlier version of MMBASIC - yes?

No, not ever.

I will update the manual to remove any confusion on this subject.

Geoff Graham - http://geoffg.net

Grogster

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Posted: 11:36pm 30 Mar 2018

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I stand corrected.

Thanks.

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

redrok

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Joined: 15/09/2014
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Posted: 01:27am 31 Mar 2018

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Hi Grogster;

Micromite User Manual MMBasic Ver 5.4

PORT(start, nbr [,start, nbr]�) = value
PORT(start, nbr [,start, nbr]�)

Both the command and function show the "..." before the ")"
This implies the preceding part can be repeated.

redrok

redrok

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Posted: 01:37am 31 Mar 2018

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Hi Geoffg;

Would it be possible to have the port instruction switch the direction
of the pins such as:

PortDir(start, nbr [,start, nbr]�) = Value

Where the Value defines the pin direction, 1 = DIn, 0 = DOUT

This would be a very useful.

redrok

Geoffg

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Posted: 03:32am 31 Mar 2018

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I was thinking of changing the SETPIN command so that it could set a number of pins simultaneously. I know that it is not the same but it is close.

Geoff Graham - http://geoffg.net

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