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Forum Index : Microcontroller and PC projects : MMbasic 6 x 4 Keypad

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58kk90
Regular Member

Joined: 14/06/2023
Location: United Kingdom
Posts: 59

Posted: 03:35pm 22 Nov 2023

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Afternoon all,

I have a 6 x 4 keypad that came from a piece of salvaged surplus equipment, I would like to use with MMBasic, I know there is support for a 4 x 3 and 4 x 4 but what about 6 x 4?

It is laid out as 6 columns by 4 rows, would it be useable with MMbasic can anyone advise please?
I know I could use an Arduino, and was planning to do so, but I would love to actually use MMbasic for something other than simply flashing LEDs's or generating tones etc.

Any ideas please.

Regards Tony.,

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10064

Posted: 03:52pm 22 Nov 2023

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Easy enough to code in Basic. Set up a regular timer interrupt which sets one of the 4 lines low in sequence, the rest high. Set the 6 lines as inputs with pullups and use the PORT function to read the 6 lines looking for anything low

58kk90
Regular Member

Joined: 14/06/2023
Location: United Kingdom
Posts: 59

Posted: 05:54am 23 Nov 2023

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Yes, you are correct, I could write a dedicated routine, and i'll probably give that a go, just wondered if the existing keypad routine would support a 4 x 6 or 6 x 4 keypad, to save code and time really.

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