LCDOUT custom commands - how to?

[Fredrick]

Did you ever get the display to work in 4 bit mode?

[Art]

I have my doubts with that circuit.

With the 4 unused LCD data bits permanently tied high it’s impossible to initialise 4 bit mode,
unless the LCD modules actually ignore the lower four bits value during initialisation.

[flotulopex]

Did you ever get the display to work in 4 bit mode?

All my circuits that use these LCDs are configured in 4 bits mode. Here is one example.

If you're using one of these ELECTRONIC ASSEMBLY LCDs, the most important point is the initialisation sequence, especially, the 1 second PAUSE to settle the module.

' DOGM LCD display Mandatory settings
PAUSE 1000      'Time to settle Vdd (THIS IS VERY IMPORTANT!!!)
LCDOUT $FE, $29 'Function Set: 4 bits bus mode
LCDOUT $FE, $1C 'Bias set
LCDOUT $FE, $55 'Power control + Contrast (HiByte)(for 5V=$52/3,3V=55)
LCDOUT $FE, $6D 'Follower control  (5V=$69/3,3V=6D)
LCDOUT $FE, $75 'Contrast (LowByte)

[Fredrick]

Thank you flotulopex for this thread, now my 3x16 DOGM display works perfect.

[flotulopex]

I'm happy it helped