Hey Russ,

Not really an option in my case. Since I use the LCD/Keypad pair as a maintenance & diagnostic tool that I normally don't have connected, I want to minimize the connection requirements and also I/O is already at a premium in my design.

The addressing scheme Miles suggests should work ...

Miles,

Good suggestion. I hadn't considered that. Thanks!

Chester

(Russ, See below.)

Miles,

Thanks for the link to the FAQ. I had search forum for this info unsuccessfully. Guess I used the wrong keywords.

When I had issues with loading Splash screen over I2C I was told by MO support that the command was not compatible with I2C (turns out it actually does work ...

Tom,

I'm not sure I follow. You originally agreed with me that it was a timing issue related to time to write data to EEPROM. That made sense and so I then asked for a value for required time delay between bytes to allow for the EEPROM write cycle. The response was that the load start-up screen was ...

Russ,

Thanks again for your reply.

Yes, I can and do read from other I2C devices currently. My read function does switch SDA line to input (in the case of my microcontroller this is done simply by leaving the output in the high state and then reading it as an input). I know that portion of I2C ...

Russ,

Thanks for the reply. Yes, I'm definitely using I2C and it is working properly. All output to LCD works properly as does I/O to other devices on the I2C buss. This is on an embedded microcontroller, not a PC.

All I need is the high level protocol for the LCD, not the low level I2C stuff. If ...

I'm looking for an example or better instructions for how to read data from the LK404-55. The info in the User Manual is pretty sketchy and I'm not having any luck getting it to work. For example, for the "Read Module Type" command I use something like the following:

flag lcd_present()
{ ubyte ec ...

Tom, thanks for your help. I just wanted to post solution for the benefit of others...

First, [80 char] is a mistake in LK404-55 User Manual. It should read [160 char].

Second, my problem using the Load Startup Screen command was associated with my use of I2C interface. (For my case, RS232 was not ...

I am trying to load startup splash screen for LK404-55. Manual gives format as follows: "254 64 [80 char]" and description says "Loads new startup screen (160 characters)." Note 80 characters is not enough for 160 character display. When I try to use this command, it seems to take the first 80 ...