Part Number:OMAP-L138
Tool/software: Starterware
Hello All, I am a new user to the OMAP-L138 LCDK board. I have been trying to run the liddDisplay.c example in the starterware on the board using an Esumic 20x4 Character LCD (2004A) which I believe has an HD44780 compatible controller. I have been able to build the project with no errors and have checked the initialization sequence and everything appears to be set correctly. However, when I run the program nothing happens with the display. I have triple checked that the display is connected properly to the LCD controller (P1/P2) via the schematic. To troubleshoot I have probed the output pins from LCDC to the display and see that there is no output on the data pins (D[0:7]) as if the controller is doing nothing. I would expect that if the LCDC was properly configured in LIDD mode I would at least see some changes in the output even if I did not have the proper timing setup for this particular LCD. I understand that it could be possible the data pins are changing at such a fast rate that the multi-meter cannot get a solid reading but there would still be some flicker in its display, which I do not see and just get a solid zero volts. I'm not sure if there is a problem with the initialization of the LCDC in LIDD mode. I copied all the proper files from the starterware, double checked the multiplexing, etc. I would greatly appreciate any help/suggestions to get this to work. Thanks. Best Regards.