LCDC output is all 0x7fff

Are you sure your DDR is configured correctly? How are you checking the frame buffer? Are you connecting to CCS and viewing through the memory window? Are you running your code standalone or loading it though CCS?

Jeff

Are you sure your DDR is configured correctly? well the values look OK in the debugger.  I was getting good output at one point last week. then we fixed a problem with the ramp generator. now we only get 0x7fff as output.  the ramp pattern now looks good in DDR.

How are you checking the frame buffer? emulator/debugger

Are you connecting to CCS and viewing through the memory window? yes

Are you running your code standalone or loading it though CCS? loading through CCS

And just to be sure, your LCDDMA_FB registers match with the location of your frame buffer in the DDR memory?

You might want to look at other regions of the DDR memory map and see what the uninitialized values are. If you see a lot of 0x7fff, it might indicate your frame buffer address is not setup correctly.

Jeff

LCDDMA_FB0 looks fine.  I copied the address from the base register into the memory display just to be sure.

I have added initializing all my DDR to zero on startup, still getting bad output

Kurt

If you have an EVM, LogicPD provides a board support library with working LCD code. You might want to look at the initialization done there and compare to what you're doing. Otherwise you could send your code to me privately and I could see how you are setting it up.

Jeff

Thanks. Can you provide a little bit more description of what was going on for the record?

I will look into the debug register issue as well.

Jeff