Typo? RESETn is a low-active input so it wants a pullup, not pulldown...Yup, reset, a0, a1 and a2 pulled down.
The traces show you're getting a NAK to the first byte (chip address), so that needs to get fixed before anything else.
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Re: more i2c and mcp23017
Typo? RESETn is a low-active input so it wants a pullup, not pulldown...Yup, reset, a0, a1 and a2 pulled down.
The traces show you're getting a NAK to the first byte (chip address), so that needs to get fixed before anything else.
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Re: more i2c and mcp23017
Originally Posted by tumbleweed
...insert facepalm emote here...
Who knows how long this thing has been working.
My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.
Not as dumb as yesterday, but stupider than tomorrow!
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Re: more i2c and mcp23017
Weeeeee!
My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.
Not as dumb as yesterday, but stupider than tomorrow!
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