VFD Display Baud Rate Settings

Alan Bradford · 2008-12-03 16:43

I am trying to use a GU112x16G-7003 VFD from Parallax.
I ran the demo programs on a Stamp2 no problem.
Now I am trying to run another display (Same type) on a BS2px and the screen is all junk like a bad baud rate setting.
There is no documentation on changing the baud on the display (J0-J3)
The demo program is using 38.4k baud (Baud = 6)
Do I need to change anything for the px?

Thanks,
Alan Bradford
Plasma Technologies

PJAllen · 2008-12-03 17:00

Is the BAUDMODE for a BS2px the same as that for a BS2?

Alan Bradford · 2008-12-03 17:06

I dont know...I am sitting in a hotel room 1000 miles away from my shop with a slow internet connection.
I did not bring my stamp manual and I have 49 min left on the manual download.
Im a sorry site for sure...
I hate last minute R&D projects...

Thanks,
Alan Bradford
Plasma Technologies

Chris Savage · 2008-12-03 17:08

The baud value for the BS2px for 38.4K is 84. I hope this helps. Take care.

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Chris Savage
Parallax Engineering

Alan Bradford · 2008-12-03 18:10

Thanks,
That Works real good.

Alan Bradford
Plasma Technologies

flying_flip · 2008-12-03 18:17

Here is what I use in all my programs.

#SELECT $STAMP
  #CASE BS2, BS2E, BS2PE
    T1200 CON 813
    T2400 CON 396
    T9600 CON 84
    T19K2 CON 32
    T38K4 CON 6
  #CASE BS2SX, BS2P
    T1200 CON 2063
    T2400 CON 1021
    T9600 CON 240
    T19K2 CON 110
    T38K4 CON 45
  #CASE BS2PX
    T1200 CON 3313
    T2400 CON 1646
    T9600 CON 396
    T19K2 CON 188
    T38K4 CON 84
#ENDSELECT

Phil

Alan Bradford · 2008-12-03 18:47

Where do you find all this stuff.
I have been looking in the Stamp Manual and missed it.

Also in the Demo Programs it shows lines of code to run the VFD, like ( SEROUT VFD, Baud, [noparse][[/noparse]$1F, $28, $77, $10, $01] ).
I dont see anywhere it explains all the elements of the code.
Thanks for the help.

Alan Bradford
Plasma technologies

flying_flip · 2008-12-03 19:15

I have been digging into any and all code examples, nuts and volts columns, etc, to find "gems" to use or learn from.
I had issues with my LCD when I switched to a BS2PX from the BS2, and found this gem.

As to the Serout command.
In the basic manual...

SEROUT {Pin}, {Baud}, [noparse][[/noparse]{commands}]

{Pin} => VFD would be the defined pin that your sending the signal on
{Baud} => from your select and a CONstant defined in your program.
The commands are different based on the LCD,VFD your using, but would/could be defined in your program after reading the VFD manual.

Hope this helps.

Phil

Alan Bradford · 2008-12-03 19:43

Thanks Phil,

I just got back from a meeting at the customer site, and the manual finished downloading.
I saw the Serial information.
The Noritake web site leaves lots to be desired.
I requested the full data sheet and they will send it in 24-48 hours.
I do have enough information to get this part of the rush job done.

Once again thanks for the help evereyone.

Alan Bradford
Plasma Technologies

VFD Display Baud Rate Settings

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