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Forum Index : Microcontroller and PC projects : Looking For - I2C Scanner - Picomite

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pwillard
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Joined: 07/06/2022
Location: United States
Posts: 324

Posted: 02:43pm 29 Jun 2022

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Is there a version of an I2C Scanner that works on Picomite? Maybe "Search" has failed me?

CaptainBoing

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Joined: 07/09/2016
Location: United Kingdom
Posts: 2171

Posted: 02:51pm 29 Jun 2022

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try this

you might have to tweak it a bit to define the I2C pins etc as the pico has no defaults

pwillard
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Joined: 07/06/2022
Location: United States
Posts: 324

Posted: 02:56pm 29 Jun 2022

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Lifesaver!

' i2cdetect like program

' Set Pins!
SetPin gp0, gp1, I2C

' Open first I2C
I2C open 100, 200

' Prep table
Print " 0 1 2 3 4 5 6 7 8 9 A B C D E F"

' loop col/row
For y=0 To 7
Print Hex$(y,2);": ";
For x=0 To 15
addr = y*16+x ' calc address
I2C write addr, 0, 1, &H00 ' write zerp to that adress
If MM.I2C=0 Then ' check for errors
Print Hex$(addr,2);" "; ' found one!
Else
Print "-- "; ' nothing here..
EndIf
Next x
Print
Next y

I2C close ' clean up

results in:

0 1 2 3 4 5 6 7 8 9 A B C D E F
00: 00 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
01: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
02: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
03: -- -- -- -- -- -- -- 37 -- -- -- -- -- -- -- --
04: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
05: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
06: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
07: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

Which is great! Thanks.

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