RTOS/TMDXLCDK6748: Porting Starterware Nand Example to my NDK Project

Jiawei Zhu

Part Number: TMDXLCDK6748

Tool/software: TI-RTOS

I want to use telnet to read/write NAND flash. But Processor SDK doesn't have NAND driver currently. So I am working on porting Starterware NAND example to my project.

I find when i read/write NAND using serial console, everything is ok.

BUT when i call NC_NetStart() after NAND operation, the network cannot start.

My environment is:

CCS 7.3

processor_sdk_rtos_omapl138_4_00_00_04

C6748_StarterWare_1_20_04_01

Could anyone help me? thanks a lot.

over 6 years ago

0 Yordan Kovachev over 6 years ago

TI__Guru**** 161600 points

Hi,

I've notified the RTOS team. Their feedback will be posted here.

Best Regards,
Yordan

0 Rahul Prabhu over 6 years ago

TI__Guru** 114410 points

Have you confirmed that there is no pin conflicting between the two interfaces? Have you check that the NC_NetStart was working before adding the NAND code. Can you perform the BOARD init before and then again after the NAND operation. This will ensure all the device initialization is same as what you had without the NAND operation.

0 Jiawei Zhu over 6 years ago in reply to Rahul Prabhu

Intellectual 600 points

Thank u for your reply, Rahul Prabhu. I have checked the pin configure. There is no conflicting between EMAC and EMIFA peripherals.

So i removed the nand pinmux setup and used Board_init() before all.

Today i found when i changed nand transfer mode from DMA to CPU. Both NAND and network work properly. Does both of them using the same DMA channel?

0 Jiawei Zhu over 6 years ago in reply to Jiawei Zhu

Intellectual 600 points

Bump

0 Rahul Prabhu over 6 years ago in reply to Jiawei Zhu

TI__Guru** 114410 points

The NAND Writer that you have has been brought in from the starterware package which is used for no-OS (bare-metal) development which has never been tested with NDK which is RTOS based package so there may be resource conflicts with respect to EDMA.

When using DMA you can look at channel settings and transfer controller settings and associated paramset to see if there is any conflict.

Regards,
Rahul

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RTOS/TMDXLCDK6748: Porting Starterware Nand Example to my NDK Project