KS0108 GLCD Issues

[james_r_lucas]

I am having fun attempting to get a KS0108 type GLCD working

I have created a simple program simply initialise the display, and it's coming up with a random image as attached (it's always the same)

Any suggestions as to why it's doing this?



Code https://dl.dropboxusercontent.com/u/284 ... 0Test.fcfx

[Jordy101091]

maybe a some what strange question but, ar you convinced that you connections are 100% ok, and correspond with the connections you have set in the software.
maybe you have connected your databus lines backwards.

regards jordy,

PS. I also use a GLCD 128x64 KS0108 display and that display is working nicely.

[james_r_lucas]

Yup, I spent hours checking the connections, right down to PCB layouts, pin assignments on the PCB etc, I'm pretty sure all is OK.

Datasheet is here http://www.farnell.com/datasheets/1485458.pdf. I've tried various pin combinations (Wouldn't be the first time where the datasheet is wrong...)

Connections are:

Data0:7 - PortB 0:7
CS1 - RA0
CS2 - RA1
RST - RA2
R/W - RA3
D/I (RS) - RA5
E - RA6

[james_r_lucas]

Been playing with the config options on the chip - they seem to have changed when I migrated up to V6, and as a result, clock out was enabled (which happens to be RA6 output - the E line), which confised tyhe LCD.

All working now