This tag refers to Hitachi's HD44780 LCD controller. Often used with Raspberry Pi's as an inexpensive way to display alphanumeric characters, this tag is for questions around using the controller from a coding/software perspective
Questions tagged [hd44780]
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Accessing system resources from ruby
I'm writing a ruby wrapper for Hitachi-44780 library for Raspberry Pi. The library itself is written in C.
I have the following code that tries to open /dev/mem
void setup_io()
{
/* open /dev/mem */
if ((mem_fd = open("/dev/mem",…
roman
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