Hi Mark Seen RCN's response below. I have several of the *hd44780 LCD displays also, *spent the weekend trying to get it to work with the info RCN provided. Seems the R/W line is always high, thus all the data signals are distorted. If I pull the R/W line low, then the data signals are ok, but nothing is written to the display. I know the displays are good, I wrote a uart-to-parallel with an atmel chip several years ago. if you have success with the Linux driver, I would like to know. amf
On Thursday, October 29, 2020 at 1:39:54 PM UTC-5 Mark A. Yoder wrote: > I've just recently discovered I have access to lots of 16x2 LCD displays. > > I see there are many examples of interfacing it to a Linux machine, but > most are via user space. I'm looking for kernel space examples. *modinfo > hd44780* shows a driver is there, but how do I use it. > > Is there a device tree for the hd44780 for a parallel interface? > > --Mark > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/8b717597-fc50-4b33-bc6a-27a96032e4b8n%40googlegroups.com.
