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atmega8

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Joined: 19/11/2013
Location: Germany
Posts: 724

Posted: 05:46am 08 Mar 2016

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Hello,

do we have a Function to read out the 1-Wire Device ID's?

THX

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10250

Posted: 07:30am 08 Mar 2016

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Not in 5.1

There was a command "OWSEARCH" in some previous releases but it didn't make the "cut" in 5.1

The command is still in the source file but not compiledEdited by matherp 2016-03-09

CircuitGizmos

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Joined: 08/09/2011
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Posted: 07:50am 08 Mar 2016

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This will read the ROM serial number (Family code, serial number, checksum) for a single device attached to pin 25.

Onewire.PIN = 25

ONEWIRE RESET Onewire.PIN
PRINT MM.ONEWIRE

ONEWIRE Write Onewire.PIN, 9, 1, &h0F
ONEWIRE READ Onewire.PIN, 10, 8, r1, r2, r3, r4, r5, r6, r7, r8

PRINT Hex$(r1)
PRINT Hex$(r2)
PRINT Hex$(r3)
PRINT Hex$(r4)
PRINT Hex$(r5)
PRINT Hex$(r6)
PRINT Hex$(r7)
PRINT Hex$(r8)

Matherp is saying that there isn't a search routine built into MMBASIC for reading multiple devices connected to one pin.

Micromites and Maximites! - Beginning Maximite

atmega8

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Posted: 08:31am 08 Mar 2016

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Hi,

i think enumerating multiple devices is is a useful function.
Don't know the reason why Geoff decided to not compile it in the new Versions.
Place, or simply forgot it????

Answers?

THXh

Justplayin

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Joined: 31/01/2014
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Posted: 09:20am 08 Mar 2016

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atmega8 said Don't know the reason why Geoff decided to not compile it in the new Versions. Place, or simply forgot it????

Answers?

Space. When Geoff saw developing the MicroMite 150, he was tight on space and felt the OneWire code was very bloated. So, he chopped it down to fit the limited space available.

--Curtis

I am not a Mad Scientist... It makes me happy inventing new ways to take over the world!!

atmega8

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Posted: 09:24am 08 Mar 2016

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Ok,

but with the actual processors there should be some space left...

matherp
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Posted: 09:35am 08 Mar 2016

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There is definitely no space in the MX170. There is in the MM+ but I assume Geoff has had so little demand for it it wasn't considered worth including. Other than the DS18B20 one-wire seems like a pretty dead technology.

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