some text to it and see what happens. Carefully read through the
commands set and experiment. you should get something to go as long as
you put in the pull up resistor on the SDA line as we said earlier in
this thread.
DLC
jasuk1970 wrote:
> Hi again.
>
> I've given this a go. I found a 3 pin cable which connected to the
> pins in the I2C connector.
>
> http://www.robotchat.org/images/lcd_oopic_1.JPG
>
> The white cable connects to pin 1 in the connector which is data, the
> black cable connects to pin 2 which is ground and the red cable which
> is the clock. I've connected these to the bread board:
>
> http://www.robotchat.org/images/lcd_oopic_2.JPG
>
> These then connect to the daughter board, Plus a +5 and Ground to
> power the board.
>
> http://www.robotchat.org/images/lcd_oopic_1.JPG
>
> These connect to the respective Data Ground and clock (top left) and
> +5, ground connect to the board to power it (bottom right). The dip
> switches are set to 00, which sets the IC2 address to 0x50
>
> The display then lights up when the power is connected.
>
> http://www.robotchat.org/images/lcd_oopic_4.JPG
>
> I now write the following program to send the command to switch off
> the back light:
>
> Dim screen As oI2C
>
> Sub Main()
> screen.Node = 0x28 ' 0x50 divided by 2
> screen.Mode = cv7Bit
> screen = 0x28
>
> End Sub
>
> Unfortunatly nothing seems to happen. Any ideas?
>
> Thanks,
>
> Jas
> --- In oopic@yahoogroups.com, <dennis.clark@...> wrote:
>
>> Yon are correct in all of your guesses. Check the ooPIC site on
>>
> the "connectors" page for the part number for that connector.
>
>> DLC
>>
>> ooPIC Tech Support
>>
>> -----Original Message-----
>>
>> From: "jasuk1970" <mail@...>
>> Subj: [oopic] Re: NC2004A LCD Screen with Modtronix LCD2S daughter
>>
> board
>
>> Date: Fri Jan 25, 2008 3:31 am
>> Size: 3K
>> To: oopic@yahoogroups.com
>>
>> Thanks for the info. I'm going to give it a try as soon as I Can
>>
> get
>
>> the I2C pins connected.
>>
>> I've posted a picture of the OOBoard with the hilighted sections
>>
> from
>
>> the manual that came with the OOPic 5 compiler software in the
>>
> files
>
>> section. It seems to have 2 I2C Ports on the board, One (in the
>> cluster of Various IO Ports labelled (Local Devices) and one
>>
> labelled
>
>> Network. I am assuming that it's the local devices one I need to
>>
> use.
>
>> Also does anyone recognise what the connector type is (Its the
>>
> white
>
>> connectors) It has 5 pins. I've been trying to google for it, but
>>
> as
>
>> 5 pin connector is pretty vague thing to search for, I'm not having
>> much luck. I have the pin information in the documentation so could
>> end up soldering wires to the pins if need be.
>>
>> Cheers,
>>
>> Jas
>>
>> --- In oopic@yahoogroups.com, ooPIC Tech Support <dennis.clark@>
>> wrote:
>>
>>> It's actually simpler than you are making this out to be. Set
>>>
> your
>
>> I2C
>>
>>> address as they recommend, then divide this by 2 (bit shift right
>>>
>> one
>>
>>> place) and this is the .node value. When you are sending data to
>>>
>> the
>>
>>> device you would use cv10bit format and the .Location attribute
>>>
> is
>
>> the
>>
>>> command, so you'd do this:
>>> dev.Mode = cv10bit
>>> dev.Node = <whatever address shifted right one bit>
>>> dev.Location = <command>
>>> dev = <data>
>>>
>>> When you are sending a command you would use this:
>>> dev.Mode = cv7bit
>>> dev = <command>
>>>
>>> That's it. If you are using an ooPIC R you don' t need to worry
>>>
>> about
>>
>>> pull ups on the SCL line - Its already driven. The SDA line
>>>
>> should
>>
>>> have a 4.7K pull up on it.
>>>
>>> DLC
>>>
>>> jasuk1970 wrote:
>>>
>>>> --- In oopic@yahoogroups.com, "rtstofer" <rstofer@> wrote:
>>>>
>>>>
>>>>> --- In oopic@yahoogroups.com, "jasuk1970" <mail@> wrote:
>>>>>
>>>>>
>>>>>> Cheers,
>>>>>>
>>>>>> I am looking at this now. I am trying to work out what Mode
>>>>>>
> it
>
>>>>>>
>>>>>>
>>>>> should
>>>>>
>>>>>
>>>>>> be using.
>>>>>>
>>>>>> An example of the commands it is looking for to get the
>>>>>>
> status
>
>> is:
>>
>>>>>> SaaaaaaadAccccccccASaaaaaaadAbbbbbbbbP
>>>>>>
>>>>>> S= start
>>>>>> a= address bit (7 bits + direction)
>>>>>> d= read or write bit
>>>>>> A= acknowledgement from slave
>>>>>> c= command bit (8 bits)
>>>>>> b= First byte of data (8 bits)
>>>>>> P= stop
>>>>>>
>>>>>> If the address is 0x50 then it would look like:
>>>>>>
>>>>>> S01010000 A 11010000 A S01010001 A {Recieve first byte of
>>>>>>
> data}
>
>>>>>> I hope it makes sense, Looking at it I am assuming it is
>>>>>>
> cv7Bit.
>
>>>>>> Or would I need to do some custom controlling to get this
>>>>>>
>> working?
>>
>>>>>> Thanks for any help,
>>>>>>
>>>>>> Jas
>>>>>>
>>>>>>
>>>>> I must be looking at the wrong datasheet because the one I am
>>>>>
>>>>>
>>
>>
>> Yahoo! Groups Links
>>
>>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
--
------------------------------------------------------
Dennis Clark ooPIC Tech Support
www.oopic.com
------------------------------------------------------
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