Search found 3 matches

by Dale Ward
Mon Apr 26, 2010 9:29 pm
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: How to determine if display has reset
Replies: 7
Views: 6831

Hi Troy, We had the issue that cable looms were already made, so I preferred a solution that didnt involve changing the wiring between the units. I have implemented a change where I set the GPO 1 on powerup to 5v (the default of this output), and this turns on a bc549, which is wired across one col/...
by Dale Ward
Wed Apr 21, 2010 6:02 pm
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: How to determine if display has reset
Replies: 7
Views: 6831

Hi Troy, Thanks for the reply. My problem is that the LCD may not derive its power from the same source as the controller, and as a further complication, the overall power supply is usually from a vehicle which can (when start/cranking) do some weird things to the supply voltage for milliseconds. In...
by Dale Ward
Mon Apr 19, 2010 8:51 pm
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: How to determine if display has reset
Replies: 7
Views: 6831

How to determine if display has reset

Hi. I am using the LK204, serial (rs232) mode attached to another embedded controller. It is possible during use that the LCD will loose power while the controller does not. What I would like to do is be able to send a command (rs232) to the LCD, and know that the LCD has had a power reset, allowing...