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Wiring is minimal with 4K7 Pull-up's on SCL & SDA (Pins 12, 13)
10K Pull-up on Reset (Pin 18)
A0,A1,A2 tied to ground. (Pins 15,16,17)
Power to Vdd (Pin 9)
Vss to Ground (Pin 10)
I see Jman got in there first but I post this here anyway as a quick test for you to try.
Cheers
Chris
Edited by Chris Roper 2015-09-12http://caroper.blogspot.com/
Chris Roper Senior Member Joined: 19/05/2015 Location: South AfricaPosts: 280
Posted: 03:23am 11 Sep 2015
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I see the Example that Jman gave is for the Maximite, which is what you asked for. My examples are for the Micromite which is slightly different, so I will leave them here for others.
Another example with the same hardware as above but with the addition of a Normally High push button connected to GPA7 (PIN 28).
This will show how to read and write GPIOA
[code]
' Micromite MKII MMBasic Ver 4.7 Beta 23
' I2C MCP23017 Test 2
' Control LED on GPA0 with Button on GPA7
'setup
I2C open 100, 1000
I2C Write &H20,0,2,&H00,&H80 ' GPA7 as Input GPA(6:0) as Output
'mainloop
DO
I2C Write &H20,0,1,&H12 ' address GPIOA Register
I2C Read &H20,0,1,Mask
if Mask = 0 then
I2C Write &H20,0,2,&H14,&H01 ' GPA0 ON
else
I2C Write &H20,0,2,&H14,&H00 ' GPA0 OFF
end if
LOOP
END
[/code]
Cheers
Chris
Edited by Chris Roper 2015-09-12http://caroper.blogspot.com/
2001cpx Regular Member Joined: 03/10/2013 Location: CanadaPosts: 59
Posted: 04:42am 12 Sep 2015
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Thank You very Much!!
Yes ,i can use directly Pin on MM,but i need 25 Inputs!
Thanks Again for your Help!!!"Color Maximite,(Duinomite-Mega,Mini),CGmmStick,GCmicroboard2b,Micromite + explore 64,100,LCD backpack,Lcd Backpack V2,TFT Backpack,Micromite Extreme,Armmite L,F,H,CMM2"
WhiteWizzard Guru Joined: 05/04/2013 Location: United KingdomPosts: 2948
Posted: 09:23pm 12 Sep 2015
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Are you aware that a 44-pin MicroMite has 33 I/Os compared to 19 I/Os that the 28-pin MicroMite has.
And as for the 64-pin MM . . . . .
WW
2001cpx Regular Member Joined: 03/10/2013 Location: CanadaPosts: 59
Posted: 10:13am 13 Sep 2015
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Hi all!
I need to use Maximite because i need a VGA Output.
i think a made an error when i wrote MM,was for Micromite ?
i read everyday this Forum,Very Good A++++,i never used micromite,
but i will try soon,Very Great beast!
and Many Thanks to All ,For the Fantastic Works you made Here,
helped me a Lot's!!!!.
Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.
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but I post this here anyway as a quick test for you to try.
