Matrix Orbital Corp

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 the standard and non-standard baud rate commands are ignored. I need to downscale the display so that a 14400 modem can communicate to it.

Anybody had any problems with this? Is there any way to verify a baud rate change? I am issuing a FE 39 CF command just like I do with any other command. It doesn't work. The FE A4 with 2 byte speed doesn't work either. Can someone verify that these work on another display? Thanks.

Sutton

Hello Sutton,

Thank you for your post.

Can you please tell me the PCB rev of your GLK24064-25? It should be printed on the PCB.

"I am issuing a FE 39 CF command just like I do with any other command." - this command changes the baud rate to 9600. Please try FE 39 8A.

"The FE A4 with 2 byte speed doesn't work either." - can you tell me the two bytes you send?

When doing baud rate changes, please make sure the you do not have the manual override jump on.

Thanks,

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