AM3359 LCD controller wih RTOS

Filippo Antonini

Prodigy 90 points

Other Parts Discussed in Thread: AM3359

Hi,

I'm developing an embedded system based on my board very similar to Black Beagleboard com AM3359,

I use Real Time OS, the TI-RTOS.

The boot, the asynchronous serial bus are functioning and my application works.

I need to drive an raster LCD display (ex.640x480), but I can't set up the AM3359 to use it with RTOS.

I tryed to adapt some code from StarterWare example (Raster example):

- I'm able to do the LCDModuleClkConfig() function;

- The system fail when I try to do the RasterClocksEnable(SOC_LCDC_0_REGS) function and when I try to read the memory address related to display these seems to be locked.

In fact, the memory area in the registers of the LCD will be locked, not accessible.

Can you give some advice to solve this problem?

over 8 years ago

0 Lalindra Jayatilleke over 8 years ago

TI__Mastermind 30365 points

Hi Filippo,

Before continuing, please take a look at the latest Processor SDK release for AM335x which was just released. This release has a starterware package which has updates (pdk_am335x_1_0_0\packages\ti). You would need the latest CCS 6.1.1 to work with this release.

To demonstrate based on the lcdc raster example in this release I was able to access LCD_CONTROLLER_RASTER_TIMING_0 at location 0x4830E02C and manipulate the values in the CCS memory browser.

Which specific memory location are you trying to access? 0x4830E000?

Lali

0 Filippo Antonini over 8 years ago in reply to Lalindra Jayatilleke

Prodigy 90 points

Good evening,
I loaded the CSS and the package indicated above to a new PC.
I can not access the registers of the LCD.
The proof you've made it with one of the examples? Which?
I tried to configure the logs and CM_PER CM_WK, but I can not access stably registers LCD.
I also used the files that are present in startware.
It 'really urgent that I find a solution.
In forums I not found helpful replies

0 domenyko over 8 years ago in reply to Lalindra Jayatilleke

TI__Genius 9655 points

Hi Lali,

I've attached on behalf of the customer the screenshot with the memory location not accessible after the initialization of the LCD.

regards,

Domenico

0 Lalindra Jayatilleke over 8 years ago in reply to domenyko

TI__Mastermind 30365 points

Domenico,

Attached is my screenshot. This is the example from ProcessorSDK run on the AM335x GP EVM.
C:\ti\pdk_am335x_1_0_0\packages\ti\starterware\examples\lcdc\raster

Are you running this on a custom board?
I notice that you are running the example of the older starterware package. Could you please try this from the ProcessorSDK package? The link is in my earlier post.

Lali

0 Filippo Antonini over 8 years ago in reply to Lalindra Jayatilleke

Prodigy 90 points

Hi,
yes, this is a custom board.
for ease of capture and send e-mails I captured the screen of a PC with the previous installation.
On the PC with all new environment Sys / bios does the same thing.
Even with a beagle black board does the same thing.

0 Lalindra Jayatilleke over 8 years ago in reply to Filippo Antonini

TI__Mastermind 30365 points

HI Filippo,

Are you using a standard GEL file?
Are you able to run your application with the proper output and only have issues reading the memory?

Lali

0 Filippo Antonini over 8 years ago in reply to Lalindra Jayatilleke

Prodigy 90 points

2251.Rev.txt

I'm using the standard file GEL.
I can load the software and run the software with Sys / Bios, I manage myself, the serial, but the task can not log all'LCDC.

I have three versions of the latest CCS is 6.1.1.00022.
the behavior is similar.
My reference is the document SPRUH73L of February 2015.
For example, the register CM_PER_L4FW_CLKSTCTRL displayed on CCS is not described on the documentation and so also others.
There is a correct document? Complete?