AVR-Chat

Hi Mark,

If your program has been working with other HD44780 display drivers, I'd 
assume some problem with the displays. I haven't seen that they changed 
anything within that chip.

Or does HD44780 compatible mean it actually uses an HD44780? Or something 
else?

Zack

On Wed, 22 Aug 2007, Mark Nowell wrote:

>
> We've recently switched to yet another cheaper, brighter, 16x2, HD44780
> compatible LCD (Ampire AC162DY1LY). A small number of these latest
> displays lock-up after correctly initialising and executing a (variable)
> number of display commands. By "lock-up" I mean that the busy-flag stays
> set for at least 150ms, after which time the watchdog resets the micro,
> which then attempts to re-initialise the display, and fails, presumably
> because it's still busy. Display shows the last written text overwritten
> by blocks on the top line, bottom line blank. The display controller
> appears to still be alive because the successive E-cycles show different
> data-bit patterns for the alternate BF and AC3 cycles (4-bit mode).
>