<![CDATA[ChipMusic.org - Detect button press on DMG by Arduino?]]> https://chipmusic.org/forums/topic/14567/detect-button-press-on-dmg-by-arduino/ Fri, 20 Jun 2014 20:16:04 +0000 PunBB <![CDATA[Re: Detect button press on DMG by Arduino?]]> https://chipmusic.org/forums/post/211432/#p211432 Jazzmarazz says:

Let us know how it goes, with photos!

]]> Fri, 20 Jun 2014 20:16:04 +0000 https://chipmusic.org/forums/post/211432/#p211432 <![CDATA[Re: Detect button press on DMG by Arduino?]]> https://chipmusic.org/forums/post/211384/#p211384 friendofmegaman says:
Jazzmarazz wrote:

This will...only work when the gambeoy itself is looking to read buttons though. If you want to be able to read presses at any time, I cannot help you. To be honest, the gameboy may be looking for a button press a million times a second, so the compromise is minimal at best.


Oh that's quite enough for me smile Thank you kindly wink

]]> Thu, 19 Jun 2014 23:48:40 +0000 https://chipmusic.org/forums/post/211384/#p211384 <![CDATA[Re: Detect button press on DMG by Arduino?]]> https://chipmusic.org/forums/post/211245/#p211245 Jazzmarazz says:

This will...only work when the gambeoy itself is looking to read buttons though. If you want to be able to read presses at any time, I cannot help you. To be honest, the gameboy may be looking for a button press a million times a second, so the compromise is minimal at best.

]]> Tue, 17 Jun 2014 22:05:59 +0000 https://chipmusic.org/forums/post/211245/#p211245 <![CDATA[Re: Detect button press on DMG by Arduino?]]> https://chipmusic.org/forums/post/211244/#p211244 Jazzmarazz says:

Easy, read the data sheet. lol
http://www.devrs.com/gb/files/gbspec.txt
CTRL+F "I/O Registers"
and read up on how the GB reads button presses and then check the schemataic:
http://www.freeinfosociety.com/electron … hp?id=1449

I suggest connecting P10 - P15 to digital inputs. Enable pull ups on your P10-P13 inputs. Conventional code will
1. activate P14,
2. read P10 - P13
3. deactivate P14
4. activate P15
2. read P10 - P13

Connect P14 and P15 to interrupts and when one goes low, read P10-P13. The datasheet will tell you how to know which button is pressed.

]]> Tue, 17 Jun 2014 22:04:05 +0000 https://chipmusic.org/forums/post/211244/#p211244 <![CDATA[Detect button press on DMG by Arduino?]]> https://chipmusic.org/forums/post/211241/#p211241 friendofmegaman says:

Today I'm being one of those annoying people who creates two (or more) topics in a row.

The idea: RGB backlight + RGB LEDs to illuminate silicon buttons. All controlled by Arduino.

When a button pressed it lights up in its own color (say, A - red, B - green, DPAD-blue, etc).

In the variable clock mode (when LTC is on that is) all buttons are lit and the color changes depending on the speed. Blue (Slow) -> Red (Fast). Thus the pot will be a stereo pot.

Now the question is - how to let arduino know that a button was pressed?

]]> Tue, 17 Jun 2014 21:53:06 +0000 https://chipmusic.org/forums/post/211241/#p211241