Hi,

I just got this 4x40 character NewHaven LCD display.

http://www.newhavendisplay.com/specs...WH-ATMI-JT.pdf

From the datasheet you can see that it has two enable pins, E1 and E2. E1 for the top two lines and E2 for the bottom two lines.

Name: LCD4x40.JPG Views: 4779 Size: 70.9 KB

Now, from the well known PBP procedure that we all use to drive these character LCD displays we only have access to one enable pin.

Code:
DEFINE LCD_DREG PORTA      全et LCD Data port
DEFINE LCD_DBIT 0     全et starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_RSREG PORTA      全et LCD Register Select port
DEFINE LCD_RSBIT 4      全et LCD Register Select bit
DEFINE LCD_EREG PORTB      全et LCD Enable port
DEFINE LCD_EBIT 3      全et LCD Enable bit
DEFINE LCD_BITS 4      全et LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 2      全et number of lines on LCD
Is there any workaround for this problem? How can I make this 4x40 display work?

Thank you,

Robert