vk204-25 not sending keypresses correctly

pjwerdna · Post by **pjwerdna** » Tue May 07, 2002 9:41 am

Hi Just got a couple of LCD's :-)

The vk204-25 works fine for displaying anything LCDC or your test program puts out.

Problem is I can't get GPO 5 to work (the others are ok) and pressing keys on the keypad (diy) don't get sent correctly.

They do get sent according to my oscilloscope, but the PC never detects them even running your test program. Tried three differant RS232 ports so far on two differant machines. The ports must be ok as they worked for a modem.

Any suggestions?

<font size=-1>[ This Message was edited by: pjwerdna on 2002-05-07 13:39 ]</font>

pjwerdna · Post by **pjwerdna** » Wed May 08, 2002 5:43 am

I guess that's a no?

Post by **Mat-Moo** » Wed May 08, 2002 7:03 am

When you are in the LCDC test mode, and you short the two middle pins of the keypad connector, does anything come up on the screen? The only other thing I can think of is that your cable is wrong?

pjwerdna · Post by **pjwerdna** » Wed May 08, 2002 7:48 am

LCDC test mode show nothing when I short the middle pns of the keypad connector, neither does the MO Alpha demo proggy. Something is sent though as I can sometimes catch it on the scope.

Don't think the cable is wired wrongly as pins 2 and 3 are connected 2-2 and 3-3 and I can control the display contents so it is receiving ok. :-(

Post by **Mat-Moo** » Wed May 08, 2002 9:38 am

Sorry, don't know what else to suggest