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Forum Index : Microcontroller and PC projects : which terminal?
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BobDevries Senior Member  Joined: 08/06/2011 Location: AustraliaPosts: 266 |
Hi all, I've looked through the manual (v4.5) but found no answer: Is there currently a way for an MMBasic programme to know whether it is "talking" to a USB terminal (Tera Term) or the internal keyboard/display? We currently have MM.DEVICE$, so maybe MM.TERMINAL could be added to return (say) 0 for internal or 1 for external? Regards, Bob Devries Dalby, QLD, Australia Bob Devries Dalby, QLD, Australia |
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TassyJim Guru  Joined: 07/08/2011 Location: AustraliaPosts: 6220 |
You could monitor the USB 5V supply and if it is there, you are 'possibly' using the USB. If the 5V is not there, it is probably safe to say that you are using the on-board keyboard/VGA. Jim VK7JH MMedit |
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| BobDevries Senior Member Joined: 08/06/2011 Location: AustraliaPosts: 266 |
Hi Jim, Is it possible to monitor the USB supply without modifying the MM? Sorry, I omitted to mention I'm using a Mono MM. Regards, Bob Devries Dalby, QLD, Australia Bob Devries Dalby, QLD, Australia |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6220 |
There should be a diode between the +5V pin on the USB connector and the input to the 3.3V regulator. Put a resistor, about 1k, between the USB connector side of the diode and a spare input on the maximite. I would use a voltage divider if not using a 5V tolerant pin. This will let you know when 5V is supplied via the USB but there is no easy way to know if you have your terminal program running. Jim VK7JH MMedit |
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