Compiler/IWR6843ISK-ODS: about iwr6843 image size

tim zhao

Part Number: IWR6843ISK-ODS

Tool/software: TI C/C++ Compiler

Hello ,TI expert

We use gesture recognition demo code,sdk version is v3.4.0.3. When rebulid the whole project, it will be generated multi_gesture_68xx_ods_dss.bin(size is 169KB)under the multi_gesture_68xx_ods_dss\Debug,

under the multi_gesture_68xx_ods_mss\Debug, generate multi_gesture_demo_68xx_ods.bin , size is 505KB.

The multi_gesture_demo_68xx_ods.bin should contain mss patch image and dss patch image,

After system reset, bootloader will load mss/dss patch image from SFLASH to program memory,

1)is dss image loaded into L1P(32KB)+L2 x2(128x2=256KB) RAM? Is is corrrect?

2)MSS TCM A size is 512kb ,If the mss image size exceeds 512kb, what do we need to do next?

3)in the r4f_linker.cmd, What is the maximum value of MMWAVE_SHMEM_TCMA_NUM_BANK?

over 4 years ago

0 Yogesh Siraswar over 4 years ago

TI__Mastermind 20755 points

Hi,

1) The DSS image is loaded based on the linker command file:

~ti/platform/xwr68xx/c674x_linker.cmd & ~\gesture_recognition\68xx_multi_gesture_and_motion_det\src\dss\dss_mmw_linker.cmd

2) Will need your memory map to provide more information.

3) Max is 6 which is shared with DSS L3.

Thanks

Yogesh

0 tim zhao over 4 years ago in reply to Yogesh Siraswar

Intellectual 981 points

Hello Yogesh

Attached is mss and dss memory map file for your reference.

6843_memory_map.zip

0 Yogesh Siraswar over 4 years ago in reply to tim zhao

TI__Mastermind 20755 points

Hi,

I do not see any memory allocation issue. Not sure if I am missing anything.

Thanks

Yogesh

0 tim zhao over 4 years ago in reply to Yogesh Siraswar

Intellectual 981 points

Hi,

Yes, the code size does not exceed memory limit.

However, with the increase of code size in the future, the memory space may be insufficient.

How should we solve this problem? Please provide some detailed steps, thank you.

0 Yogesh Siraswar over 4 years ago in reply to tim zhao

TI__Mastermind 20755 points

Hi,

In that case you can either reduce the DSS_L3 shared bank and increase the TCMA shared bank.

Or you may also place the code in TCMB.

Thanks

Yogesh

0 tim zhao over 4 years ago in reply to Yogesh Siraswar

Intellectual 981 points

Hi Yogesh

1. reduce the DSS_L3 shared bank and increase the TCMA shared bank.

==> just modify MMWAVE_SHMEM_TCMA_NUM_BANK，is it correct?

0 Yogesh Siraswar over 4 years ago in reply to tim zhao

TI__Mastermind 20755 points

Hi,

You need to decrease the MMWAVE_L3RAM_NUM_BANK if it is not utilized completely.

Example:

MMWAVE_L3RAM_NUM_BANK = 6
MMWAVE_SHMEM_TCMA_NUM_BANK = 0
MMWAVE_SHMEM_TCMB_NUM_BANK = 0

MMWAVE_L3RAM_NUM_BANK = 5
MMWAVE_SHMEM_TCMA_NUM_BANK = 1
MMWAVE_SHMEM_TCMB_NUM_BANK = 0

Thanks

Yogesh

0 tim zhao over 4 years ago in reply to Yogesh Siraswar

Intellectual 981 points

Hello Yogesh

ok, i will have a try. Thanks for your support!

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Compiler/IWR6843ISK-ODS: about iwr6843 image size