Button array cdu

[Shimokuta]

Hi

I am currently creating a CDU for my sim.
I mis read the limitations of creating a button array for the keypad of 8 rows/ columns.
I was thinking this was per array, and not per arduino!
8 row/column is not sufficient for my cdu.
What options do i have for creating the key pad with about 65 buttons?

Grtz

[Sling]

Not sure it’s per Arduino. Have you tried? In any case if you only need 65 then just add an extra single button to the 64 in the array and you have what you need.

[Ralph]

It's not per Arduino as far as I know.

[Keith Baxter]

Hmmm...

I know the wiki says 8x8 but I did this some time ago for the Zibo as a test and it worked.

However you can have more than 1 button array per board as long as there are enough pins. I did one some time back in the beta but cannot find it. If i do find it I will post here to save you some time.

try this

test-Button Array - .siff

(7.8 KiB) Downloaded 67 times

The siff might be on the forum. I think I sent it to Gilles @SimPassion back then.

Keith

[Ralph]

8x8 yes, but then just start another.

[Keith Baxter]

8x8 yes, but then just start another.

100%

I did that already. Cannot find it. Got lost when we had the beta CTD issues.

I did a inline function version

Trying to see if I can find it.

Keith

[SimPassion]

Here's what I've made already in the Z_2D_XP MCDU, which can be used straight forward, for hardware only feature, with masking the bitmap on screen display (Air Manager feature on Panels)

Code: Select all

-------------------------------------

--		| Array I/O |

--	69	I/O	: PUSH BUTTONS (MCDU Keys) with direct individual input

--			or

-- from the SI WIKI : https://siminnovations.com/wiki/index.php?title=Hw_button_array_add

-- A button array is a way to connect a lot of buttons to your project with a reduces required pin count.
-- Normally, every button would need a separate pin.
-- With the button array, you can decrease the number of pins needed by arranging the buttons into a grid (see schematic below).

-- The grid has two different types of pins, rows and columns. Rows are set as an output and will be actively driven.
-- Columns are set as input and are read to see if a button changed state.

-- https://siminnovations.com/wiki/images/0/0b/Button_array_schematic.png

--	16	I/O	: for 8 x 8 Buttons Array = 64 Push Buttons Maxi
--	5	I/O	: for 2 x 3 Buttons Array = 6 Push Buttons Maxi, the last is not used in this case

--		= 21 I/O

--			or

--	37	I/O	: for 4 x 8 pins + 1 x 5 pins = (4 x (4 x 4 buttons) + 1 x (2 x 3 buttons) Buttons Array) = 70 Push Buttons Maxi

------------------------------------------------------------------------------------------------------------------------------------------

Code: Select all

if bln_btnarray == true then
	prtdbg("BUTTON ARRAY","SELECTED "..arr_str,"dbg07",true)
	if arr_str == str_arr1 then
		hw_btn_arr1	= hw_button_array_add("MCDU Push Buttons Array#1 : 8 x rows & 8 x columns", 8, 8, pr_arr6_press, pr_arr6_release)
		hw_btn_arr2	= hw_button_array_add("MCDU Push Buttons Array#2 : 2 x rows & 3 x columns", 2, 3, pr_arr7_press, pr_arr7_release)
	elseif arr_str == str_arr2 then
		hw_btn_arr1	= hw_button_array_add("MCDU Push Buttons Array#1 : 4 x rows & 4 x columns", 4, 4, pr_arr1_press, pr_arr1_release)
		hw_btn_arr2	= hw_button_array_add("MCDU Push Buttons Array#2 : 4 x rows & 4 x columns", 4, 4, pr_arr2_press, pr_arr2_release)
		hw_btn_arr3	= hw_button_array_add("MCDU Push Buttons Array#3 : 4 x rows & 4 x columns", 4, 4, pr_arr3_press, pr_arr3_release)
		hw_btn_arr4	= hw_button_array_add("MCDU Push Buttons Array#4 : 4 x rows & 4 x columns", 4, 4, pr_arr4_press, pr_arr4_release)
		hw_btn_arr5	= hw_button_array_add("MCDU Push Buttons Array#5 : 2 x rows & 3 x columns", 2, 3, pr_arr5_press, pr_arr5_release)
	end
else

[Shimokuta]

Thanks guys for the quick help
I did try a second button array on the same arduino; this did not work, so i was afraid there was a limit of a max per arduino.
So, i guess i made an error , in connecting or coding.

but good to hear there is no max per arduino, ok , only max is connections...

again thanks, i will go and try again from here

[SimPassion]

Thanks guys for the quick help
I did try a second button array on the same arduino; this did not work, so i was afraid there was a limit of a max per arduino.
So, i guess i made an error , in connecting or coding.

but good to hear there is no max per arduino, ok , only max is connections...

again thanks, i will go and try again from here

Could you please, post your script and a picture of your arduino wiring with description, in order to help further ?

[Ralph]

You can also use your own Arduino sketch.