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Discussion Groups | BasicX | 2 X 16 LCD will not show text
Discussion forum for the BasicX family of microcontroller chips.
2 X 16 LCD will not show text - hamk7fj - May 30 20:41:08 2007
A new 2 X 16 LCD lights up and seems to accept and process control
codes for backlight and cpu reset but every attempt to send normal text
fails. I can see the bits arriving at the LCD with a scope. I have
copied sample software from web site. All settings are default (9600,
reverse logic, etc). I am using pin 13 of the BX-24 to drive the LCD
and have checked voltage level at the LCD as 5.15 volts.
I have used the BX-24 with serial LCD's before (a parallax LCD,
actually) with no problems. Am I missing something here?
Don
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
codes for backlight and cpu reset but every attempt to send normal text
fails. I can see the bits arriving at the LCD with a scope. I have
copied sample software from web site. All settings are default (9600,
reverse logic, etc). I am using pin 13 of the BX-24 to drive the LCD
and have checked voltage level at the LCD as 5.15 volts.
I have used the BX-24 with serial LCD's before (a parallax LCD,
actually) with no problems. Am I missing something here?
Don
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: 2 X 16 LCD will not show text - Tom Becker - May 30 20:59:41 2007
> ... every attempt to send normal text fails.
I assume you mean you see nothing on the LCD. Contrast?
Tom
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I assume you mean you see nothing on the LCD. Contrast?
Tom
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Re: 2 X 16 LCD will not show text - hamk7fj - May 31 18:04:27 2007
--- In b...@yahoogroups.com, Tom Becker wrote:
>
> > ... every attempt to send normal text fails.
>
> I assume you mean you see nothing on the LCD. Contrast?
> Tom
>
PROBLEM SOLVED! It was caused by the contrast pot turned all the way
down.
Don
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
>
> > ... every attempt to send normal text fails.
>
> I assume you mean you see nothing on the LCD. Contrast?
> Tom
>
PROBLEM SOLVED! It was caused by the contrast pot turned all the way
down.
Don
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: 2 X 16 LCD will not show text - Don Ehrlich - May 31 18:37:38 2007
After turning on the backlight it glows like it should with no characters but when the
same command is used to send text the screen remains blank.
I can turn the backlight on and off as described in the manual and when I send a 'reset' command the lcd does reboot but when sending a text letter nothing happens. I have set contrast to 255 with no effect.
Don
[Non-text portions of this message have been removed]
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I can turn the backlight on and off as described in the manual and when I send a 'reset' command the lcd does reboot but when sending a text letter nothing happens. I have set contrast to 255 with no effect.
Don
[Non-text portions of this message have been removed]
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