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Guilherme Jardim
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« on: 13.05.2003 at 16:48:44 » |
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I can't find the program to connect Nokia LCD to LPT1 port. Can you help?
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Jeepman
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« Reply #1 on: 14.05.2003 at 10:45:59 » |
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Salutations !
Eric G.
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Dj_Spooky
Newbie
Posts: 23
i like the yampp 7
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« Reply #2 on: 17.05.2003 at 04:30:36 » |
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do you have any scematic to connect your nokia LCD to your LPT1 ?
If you have one can you post it here plz
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Jeepman
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« Reply #3 on: 19.05.2003 at 19:28:14 » |
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Hi,
The schematic is inside the program !! (menu : View, Schematic)
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Salutations !
Eric G.
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Guilherme Jardim
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« Reply #4 on: 26.05.2003 at 00:26:53 » |
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tnx for help!  |
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Robin Stridh
Newbie
Posts: 3
Keep on Smurfin'
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« Reply #5 on: 02.06.2003 at 13:18:23 » |
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Hello Eric!
How do you manage to convert the 0-5V levels from the parallell port to the 0-3.3V levels required by the nokia LCD?
I cannot figure that out fram the schematics. Also, what I/O pins are to be conected to the nokia lcd.
Is the source code available somewhere?
Thanks!
/ Robin
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Gall
Full Member
Gender: 
Posts: 217
Cats just love ... MP3!
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« Reply #6 on: 02.06.2003 at 15:16:32 » |
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Generally, the level conversion can be done in two ways:
1) just use resistors or resistors + diodes to convert levels, or 2) use a special level; converter IC. This IC is just a buffer or inverter with two power supplies - one for input and one for output. There is one in 40xx series, also there should be one in 74xx (but I'm not sure, as I use Russian analogues with different names - in Russian naming, they are K561PUxx, the K561 is of the same CMOS type as 40xx).
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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The difficult we do today; the impossible takes a little longer.
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Jeepman
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« Reply #7 on: 03.06.2003 at 05:59:36 » |
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Hi,
You can use the 74LVC245. Use the same hardware as the Y3U except for the crystal. You should use the 24.576Mhz.
I know, the scematic inside the program is not clear. It's a general schematic for both Nokia and VS1001. I will include a new schematic soon.
The code is written in delphi. It's an exact conversion of the Y3U library.
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Salutations !
Eric G.
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Leif Bakken
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« Reply #8 on: 08.09.2003 at 23:31:09 » |
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Hey, I've figured out some of the schematics, but not all..
Where does DREQ and SO (serial out) go on the 3310 display? Are they used for anything at all? Does anyone have a specific schematic for only 3310 display? Shouldn't be very difficult to make, if someone has gotten it to work...
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Leif Bakken
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« Reply #9 on: 08.09.2003 at 23:48:09 » |
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YOOOOHOOOO...
I finally got it to work. I simply could not belive my eyes. Man that was great. Phouh, I need a sigarette, and then I want to cuddle...
I used a 74hc245, and found out that pin 1 should be set high, and pin 19 should be set low to set the direction of data flow.
DREQ is not used and neither is SO.
This is for use with the 3310 display...
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Jeepman
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« Reply #10 on: 09.09.2003 at 15:48:33 » |
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Hi,
The schematic is used for the Nokia LCD and the VS1001K. So you don't need to connect the DREQ and SO Pins. These pins are use to control the MP3 decoder (VS1001).
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« Last Edit: 01.01.1970 at 01:00:00 by 1080169200 »
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Salutations !
Eric G.
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