Matrix Orbital Corp

Hi, I have one of the 821 LCD displays and it's working great! I'm using I2C to connect it to an Atmel AVR 2313 MCU. I've built a handheld serial terminal.
My only problem is using the Go To Position command. I can't seem to get this to work... I can clear the screen, turn of the cursor, go to upper left, etc. But I just can't get it to accept the go to command.

I'm using Bascom to program the MCU. Here is the code that I'm using:

Sub Line1 'Move cursor to start of line 1
'Device is at address &H5C
I2csend &H5C , 254 'Control Code
I2csend &H5C , 71 'Go To command
I2csend &H5C , 1 'Column 1
I2csend &H5C , 1 'Row 1
Waitms 25
End Sub

Sub Line2 'Move cursor to start of line 2
I2csend &H5C , 254
I2csend &H5C , 71
I2csend &H5C , 1
I2csend &H5C , 2 'Row 2
Waitms 25
End Sub

Isn't the top left 0,0 not 1,1?

Might be the problem...

r.

Hi!

Top left for positioning the cursor is at 1,1. So that is probably not your problem.

I think it is a funny inconcistency that all graphic commands have it's orgin at 0,0 (On the graphic displays that is)...

/Oskar Sj

I thought about the 1 vs 0, but it didn't make any difference... Besides, it would have at least done something when I issued the col 1, row 1 command.

Strange...

Eddy