AM3351: Can I know why below occurred and what is the gel file to be included

Hello Mounika,

When did this error happen? Were you trying to load code to your board through CCS?

Regards,

Jianzhong 

Hi,

I am trying to debug hello word program with CCS.

Do i want to change any DDr registers for it?

Ok. Can you please answer these questions to help us understand where the problem is?

1. Were you able to load the hello world program through CCS?

2. Were you able to run the code?

3. Did this error happen when the program tried to read from or write to the DDR?

Thanks,

Jianzhong

Hi,

I am trying to debug the code from ccs and I want to edit the .gel file because my custom board is with 16 bit and 512mib 

Thanks

Mounika

Hi Mounika,

I assume your code runs well until it tries to read from or write to DDR. So you want to know how to initialize your DDR through the gel file. Is this correct?

Thanks,

Jianzhong

Hi,

Yes it is think so.in gel file it runs fine till am335x evm v1.5 initialisation is done .

After that it is showing above error.i am using am335x_15x15_EVM.gel file.

I have changed the DDR3_REF_CTRL to 0x0000C30 is it correct for mt41k512m8rh-125.

Regards,

Mounika 

Hi Mounika,

Let me loop in our DDR expert to help you further.

Regards,

Jianzhong

After running the ddr initializaition gel (before you try to load the hello world code), try opening a memory window at 0x80000000 to see if you can read write individual addresses.  It looks like the DDR init is running fine, but there is some other CCS error you are hitting

Regards,

James

Hi,

Memory window at 0x80000000 is not opening

Thanks

Mounika

It appears the JTAG pod is losing connection with the processor.  Can you send the JTAG portion of your schematic?  What did you do to create your target configuration?  Can you disable the GEL function which initializes the DDR and see if you can connect thru CCS successfully?

Regards,

James

hi,

how can i disable the gel function which initializes DDR ?

i added  new target configuration file into basic hello world program , added name and click on finish .

in Basic i used am3351 as my board and connection as XDS110 USB Debug Probe 

Advanced : 

I am using gel file  in the location :ccs1240ccs/ccs_base/emulation/boards/evmam3358/gel/am335x_15x15_EVM_v1_3.gel

Thanks,

mounika