lcd 27977 with 16f88 and picbasic

billwill

i have a parallax lcd 27977. i use picbasic to program my 16f88. what i'm trying to do is get some text displayed to this lcd but not having any success. i'm using the picbasic "serout" statement via portb.4/pin 10. having Rx lead connected to this port produces no text at all to the lcd.

anyone tried this setup before and/or have any suggestions?

tia

Leon

Are you using the correct baud rate?

Leon

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Mike Green

Also make sure the contrast is set properly. Look at the LCD documentation on page 5 about test mode.

billwill

test mode works ok, and displays the char's ok. the contrast i did adjust, so that is working ok. i tried different baud rates and set the dips accordingly too.

Mike Green

Can't help you much on the PICBasic piece. You might try inverted mode. That shouldn't be what's needed, but PICBasic might have this backwards.

billwill

thanks!

"t2400" did the trick but values "396",[noparse][[/noparse]Driven,True,None] and "16780",[noparse][[/noparse]Driven,Inverted,None] didn't. {??}

OSC and OSCCON had to be set correctly or i couldn't get any text to display. the datasheet at section at 4.6.1 for 16F88 helped with that. working now


mucho gracias!