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DuinoMiteMegaAn
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Joined: 17/11/2011
Location: Australia
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Posted: 02:08am 05 Apr 2012

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Just Curious - MMBasic 3.1 for DuinomiteMega

@Geoffg

Com2: on D2 Rx (13) & D3 Tx (14) works.

Com1: on D4 Rx (15) & D5 Tx (16) does not work?

I used Open/Close comspec as Console several times, for a serial port quick check,
and only Com2 works. It seems Com1 doesn't work in MMBasic 3.1 or my port is fried?

Has anyone else got their Com1 port working on their DuinomiteMega using MMBasic 3.1?Edited by DuinoMiteMegaAn 2012-04-06

Geoffg

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Posted: 04:40am 05 Apr 2012

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I am sure that I tested COM1: when I originally released ver 3.1 and it worked OK then.

At this time I am working on ver 3.2 and COM1: definitely works in that version (I have just tested it). It might be better to wait for 3.2 anyway as that also supports the hardware UARTs giving four serial ports in total (on the DuinoMite).

Version 3.2 should be out in a couple of weeks.

GeoffEdited by Geoffg 2012-04-06

Geoff Graham - http://geoffg.net

DuinoMiteMegaAn
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Posted: 01:10pm 06 Apr 2012

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Also, Should printing to a serial port(#nbr) echo on the video display?

Open "Com2:9600,256" AS #5
Print #5, "comtest"

Geoffg

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Posted: 01:25pm 06 Apr 2012

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Yes, that is the correct behaviour.
You can use OPTION VIDEO OFF to disable it.

Geoff

Geoff Graham - http://geoffg.net

vk4tec

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Posted: 02:02pm 06 Apr 2012

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I am confused more than normal

Why would opening COM2 echo to VGA ?

Is it the AS CONSOLE that is doing it ?

Andrew

Andrew Rich VK4TEC
www.tech-software.net

DuinoMiteMegaAn
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Posted: 04:52pm 06 Apr 2012

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Why would opening COM2 echo to VGA ?

I think you meant
Why would printing [? #5, "test"] to an opened serial port echo to VGA ?

In my application, I opened a serial port to transmit chars by using a ? (print) and MMBasic echoed the chars back on the VGA video. I would have think that a print command with a serial port file nmbr would not do this but it does.

Edited by DuinoMiteMegaAn 2012-04-08

Geoffg

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Posted: 11:03pm 06 Apr 2012

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Sorry, I am the one who is confusing everyone because I misread the post.

If you open a port normally like: OPEN "COM1" AS #3
Then: PRINT #3, "hello"
Will only be sent out on COM1, it will not appear on the VGA or USB.

If you open a port like this: OPEN "COM1" AS CONSOLE
Then: PRINT "hello"
Will be sent out on the VGA, USB and COM1:

In the latter case you can use OPTION VIDEO OFF to disable echo to the VGA and OPTION USB OFF to disable echo to the USB (both only while the program is running).

Geoff

Geoff Graham - http://geoffg.net

DuinoMiteMegaAn
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Location: Australia
Posts: 231

Posted: 11:46pm 06 Apr 2012

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Whew ... I checked my application again and found that a microcontroller
with built-in Python "the snake" was echoing command characters back through the serial port.

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