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I2C programmer wanted
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Bob Minchin
electronics forum beginner


Joined: 24 May 2005
Posts: 4

PostPosted: Sat Jun 10, 2006 4:03 pm    Post subject: I2C programmer wanted Reply with quote

I need to send 4 bytes to a frequency synthesiser chip with an I squared C
interface. I am a hardware engineer and not capable of writing PC
applications etc.
A convenient way would seem to run some code on my laptop to squirt out some
bits via the serial or parallel port.
Can anyone point me towards a source of such code?

TIA

Bob
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Pooh Bear
electronics forum Guru


Joined: 24 Mar 2005
Posts: 3507

PostPosted: Sun Jun 11, 2006 12:57 am    Post subject: Re: I2C programmer wanted Reply with quote

Bob Minchin wrote:

Quote:
I need to send 4 bytes to a frequency synthesiser chip with an I squared C
interface. I am a hardware engineer and not capable of writing PC
applications etc.
A convenient way would seem to run some code on my laptop to squirt out some
bits via the serial or parallel port.
Can anyone point me towards a source of such code ?

You'll have to 'frig' the serial or parallel interface to do this by 'bit
banging' it. I2C just has 2 lines for its interface. As for programming, I know
how to write an I2C driver for embedded uCs but using a parallel or serial port
on a PC is another matter.

Graham
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Jasen Betts
electronics forum Guru


Joined: 31 Jul 2005
Posts: 997

PostPosted: Sun Jun 11, 2006 1:51 am    Post subject: Re: I2C programmer wanted Reply with quote

On 2006-06-10, Bob Minchin <bob.minchin@OEnewsreader.com> wrote:
Quote:
I need to send 4 bytes to a frequency synthesiser chip with an I squared C
interface. I am a hardware engineer and not capable of writing PC
applications etc.
A convenient way would seem to run some code on my laptop to squirt out some
bits via the serial or parallel port.
Can anyone point me towards a source of such code?


linux has an I2C module apparrently capable of communicating via parallel
port. (I've never used it) the documentation includes a simple schematic.



Bye.
Jasen
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petrus bitbyter
electronics forum Guru


Joined: 24 Mar 2005
Posts: 363

PostPosted: Sun Jun 11, 2006 8:17 pm    Post subject: Re: I2C programmer wanted Reply with quote

"Bob Minchin" <bob.minchin@OEnewsreader.com> schreef in bericht
news:t3Cig.7215$n13.4566@newsfe2-win.ntli.net...
Quote:
I need to send 4 bytes to a frequency synthesiser chip with an I squared C
interface. I am a hardware engineer and not capable of writing PC
applications etc.
A convenient way would seem to run some code on my laptop to squirt out
some
bits via the serial or parallel port.
Can anyone point me towards a source of such code?

TIA

Bob



Bob,

Guess this appnote will do:

http://www.maxim-ic.com/appnotes.cfm/appnote_number/3230

petrus bityter
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Kat
electronics forum beginner


Joined: 11 Jun 2005
Posts: 2

PostPosted: Mon Jun 12, 2006 10:28 pm    Post subject: Re: I2C programmer wanted Reply with quote

Try www.i2cchip.com...great serial to i2c/spi/1wire chips, dip format and
fairly cheap. They also have a couple of test jig programs and various dev
hardware.

Cheers,
Mike




Pooh Bear wrote:

Quote:


Bob Minchin wrote:

I need to send 4 bytes to a frequency synthesiser chip with an I squared
C interface. I am a hardware engineer and not capable of writing PC
applications etc.
A convenient way would seem to run some code on my laptop to squirt out
some bits via the serial or parallel port.
Can anyone point me towards a source of such code ?

You'll have to 'frig' the serial or parallel interface to do this by 'bit
banging' it. I2C just has 2 lines for its interface. As for programming, I
know how to write an I2C driver for embedded uCs but using a parallel or
serial port on a PC is another matter.

Graham
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Bob Minchin
electronics forum beginner


Joined: 24 May 2005
Posts: 4

PostPosted: Tue Jun 13, 2006 8:43 pm    Post subject: Re: I2C programmer wanted Reply with quote

"petrus bitbyter" <pieterkraltlaatditweg@enditookhccnet.nl> wrote in message
news:448c7a62$0$5407$e4fe514c@dreader16.news.xs4all.nl...
Quote:

"Bob Minchin" <bob.minchin@OEnewsreader.com> schreef in bericht
news:t3Cig.7215$n13.4566@newsfe2-win.ntli.net...
I need to send 4 bytes to a frequency synthesiser chip with an I squared
C
interface. I am a hardware engineer and not capable of writing PC
applications etc.
A convenient way would seem to run some code on my laptop to squirt out
some
bits via the serial or parallel port.
Can anyone point me towards a source of such code?

TIA

Bob



Bob,

Guess this appnote will do:

http://www.maxim-ic.com/appnotes.cfm/appnote_number/3230

petrus bityter



Thank you Petrus, this is just what I need.

best regards

Bob
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Bob Minchin
electronics forum beginner


Joined: 24 May 2005
Posts: 4

PostPosted: Tue Jun 13, 2006 8:44 pm    Post subject: Re: I2C programmer wanted Reply with quote

"Kat" <kat@challengeassociates.ca> wrote in message
news:wUljg.25893$43.7613@nnrp.ca.mci.com!nnrp1.uunet.ca...
Quote:
Try www.i2cchip.com...great serial to i2c/spi/1wire chips, dip format and
fairly cheap. They also have a couple of test jig programs and various dev
hardware.

Cheers,
Mike




Pooh Bear wrote:



Bob Minchin wrote:

I need to send 4 bytes to a frequency synthesiser chip with an I
squared
C interface. I am a hardware engineer and not capable of writing PC
applications etc.
A convenient way would seem to run some code on my laptop to squirt out
some bits via the serial or parallel port.
Can anyone point me towards a source of such code ?

You'll have to 'frig' the serial or parallel interface to do this by
'bit
banging' it. I2C just has 2 lines for its interface. As for programming,
I
know how to write an I2C driver for embedded uCs but using a parallel or
serial port on a PC is another matter.

Graham


Thanks Mike, a good suggestion but the idea from Petrus works out really
cheap so i'll give that a try first.

Best regards

Bob
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