Has anyone ever uploaded any of the fonts from the Download sections using I2C? I was trying to see if it was possible to do 'on the fly' uploads without using the Mogd software. The command structure is there, but since each font as a .MGF file and many .BMP files, I was wondering about the 'file s...

Hi, We are a developer of government security systems worldwide and are evaluating several of the M.O. displays for a couple of projects, namely the GLK24064 and GLK12232. While we are generally pleased about the looks and general operation of the displays (we use I2C), we have a little concern on t...

Jon, According to the GLK24064-25 datasheet, section 4.1.1, it does support I2C reads. It talks about the reads in the 2nd paragraph. Other displays such as the GLK12232-25 do not support I2C reads, and it is documented in the datasheet. But, I think the GLK24064-25 does support reads if you have th...

I have a GLK24064-25 display. I2C writes work fine. Just like other I2C chips I use. However, the 2 reads (READ VERSION and READ MODULE TYPE) don't work yet. The manual is not that clear. Usually, when issuing I2C reads, you first issue a WRITE of the command, then issue a RESTART, then a READ. The ...

Problem fixed.

If you don't wait 10ms after issuing a baud rate change command, the uart doesn't accept the baud rate change. Jon is noting that for the next manual release. Actually, the data I have is 3+ ms delays seem to work, but I put 10ms in case of fluctuation.

Sutton

I am using the I am using the GLK24064-25 as a RS232 display. as a RS232 display. I have been using it for a couple of months. However, I can't seem to get the baudrate commands to work at all. I can draw graphics, text, everything else, but it seems not to respond to the change of baud rate. Both t...

James,

More troubleshooting:

If I hookup the Linear LTC1384 RS232 output to a dumb terminal, it works fine. But the same output of +5V is not registered with the display. At a +12V level, the output is displayed on the display.

Sutton

James, Thanks for the quick reply. The RS232 straps on connected. That was the default condition when I got the display. It is a newer display. Just got it about 2 months ago. I am using a Tektronic scope to look at the various signals. The signals are identical coming out of the CPU UART as well at...

I am using the GLK24064-25 as a RS232 display. I have configured it to receive data from a CPU UART and it prints to it just fine. I have also configured it to receive data from a Linear LTC1384 RS232 driver connected to a UART chip (Philips SCC2692) that is not working. I discovered that the CPU UA...

What is the range of reference numbers in the font and bitmap upload commands? I can't find it in the manual. Thanks.