AM3358: MCSPI_SlaveMode_MasterExample_bbbAM335x_armExampleProject

I saw

C:\ti\edma3_lld_2_12_05_30D\packages\ti\sdo\edma3\drv\sample\src\sample_arm_init has edma3init definition. What header file or

ath am I missing? Thanks

Even if I add

/* EDMA3 Header files */

#include <ti/sdo/edma3/drv/edma3_drv.h>

#include <ti/sdo/edma3/drv/sample/bios6_edma3_drv_sample.h>//which include edma3init and I add here

#include <ti/sdo/edma3/rm/edma3_rm.h>

#include <ti/sdo/edma3/rm/sample/bios6_edma3_rm_sample.h>

I still get

makefile:147: recipe for target 'MCSPI_SlaveMode_MasterExample_bbbAM335x_armExampleProject.out' failed

./main_mcspi_slave_mode.o: In function `MCSPIApp_edmaInit':

C:/ti/pdk_am335x_1_0_15/packages/ti/drv/spi/example/mcspi_slavemode/src/main_mcspi_slave_mode.c:447: undefined reference to `edma3init'

collect2.exe: error: ld returned 1 exit status

gmake[1]: *** [MCSPI_SlaveMode_MasterExample_bbbAM335x_armExampleProject.out] Error 1

makefile:143: recipe for target 'all' failed

gmake: *** [all] Error 2

What should I do to solve issue? Thanks

Hi Frank

     I follow your steps. It build success but

Symbols SPI_DMA_ENABLE doesn't define! I define Symbols SPI_DMA_ENABLE. It build success. I debug it

line 446 gEdmaHandle = (EDMA3_RM_Handle)edma3init(edma3Id, &edmaResult); failed. I even can't check edmaResult because it doesn't reach next line. Console has

CortxA8: Unhandled ADP_Stopped exception 0x8003F608

Thanks

Anping,

I would remove all optimizations for debugging:

• Right click on project->Properties
• Build->GNU Compiler->Optimization
• Select blank or "None (-O0)" for Optimization level.

Then rebuild the code.

Can you put a breakpoint on the edma3init() call? You should be able to step into this function since it's defined at the application level in sample_arm_init.c. You might be able to get a better understanding of where the failure occurs, e.g. EDMA3_DRV_create(), edma3OsSemCreate(), EDMA3_DRV_open(), etc.

Regards,
Frank

Hi Frank

    I try to step into edma3init() but I get

Can't find a source file at "src/sample_arm_init.c"

Thanks

Anping,

You should see a "locate file" button. Click on that and navigate to the folder which contains the file.

pdk_am335x_1_0_15/packages/ti/drv/spi/soc/am335x

Hi Frank

edma3Result = EDMA3_DRV_create (edma3Id, globalConfig ,

(void *)&miscParam);

failed.

Thanks

Hi Frank

result = EDMA3_RM_create(phyCtrllerInstId, (EDMA3_RM_GblConfigParams *)&rmGblCfgParams, miscParam);

failed.

I try to step into it I get

Can't find a source file at "/db/ztree/library/trees/newlib/newlib-a00/src/linaro/gcc-arm-none-eabi-7-2017-q4-major/src/newlib/libgloss/arm/swi.h"

Thanks

Hi Frank

    I stop at edma3resmgr.c line 6147 ptrEdmaccRegs->EMCR = EDMA3_RM_SET_ALL_BITS; Here is message

Break at address "0x80022c10" with no debug information available, or outside of program code.

How to fix it? By the way why I need to locate the file during debug? How to do to let the code to locate by itself. Thanks

Anping,

I spoke with the developer about this. He said that although DMA mode is supported in the SPI driver for AM3, we've probably never had a test case to verify DMA mode. Verifying support will require some debug effort in the SPI & EDMA drivers.

Regards,
Frank

Anping,

Section 7.5.1 of the CCS User's Guide contains information about debugging library code.

https://software-dl.ti.com/ccs/esd/documents/users_guide/index.html

https://software-dl.ti.com/ccs/esd/documents/users_guide/ccs_debug-main.html#debugging-library-code

Regards,
Frank

Hi Frank

       Does MCSPI_SlaveMode_MasterExample_bbbAM335x_armExampleProject work or not? If it works, MCSPIApp_edmaInit should work. But it doesn't!. My project use this function. Can you ask your developer about

edma3resmgr.c line 6147 ptrEdmaccRegs->EMCR = EDMA3_RM_SET_ALL_BITS; Here is message

Break at address "0x80022c10" with no debug information available, or outside of program code.

? Thanks

Anping,

Like I said, I spoke with the developer about the problems you're encountering. He said that although DMA mode is supported in the SPI driver for AM3 (i.e. the code is available and compiles):

1. We've probably never had a test case to verify DMA mode.
2. Verifying DMA mode will require some debug effort in the SPI & EDMA drivers.

I can't check whether it works right now since I don't have access to a board. Given your observations I would have to say it isn't working.

Please let me know if this answers your question..

Regards,
Frank

Hi Frank

    It is not just for McSPI. UART use edma3init also. If TI can't solve it, user can't use your DMA mode at all. Please ask the developer why can the code not set register? I don't think it is very hard to solve it. Thanks

Anping,

Thanks much for the feedback.

I'm already pursuing the UART issue with the developer. I'll also pursue this issue myself when I obtain my BBB.

Regards,
Frank

Hi Frank

    The software components are fully tested to ensure that they work together with TI’s Code Composer Studio integrated development environment when I download your PDK. What can I say when you wrote

although DMA mode is supported in the SPI driver for AM3, we've probably never had a test case to verify DMA mode. Verifying support will require some debug effort in the SPI & EDMA drivers.

In fact we are very big customer for TI. We might order 10000+ AM3358 for our product. I really hope TI can solve this DMA issue. Thanks

Anping,

I appreciate your concerns. I've notified the developer concerning your observations. I'll also raise this issue with my management.

Unfortunately I'm constrained in what I can do to help since I don't have access to my hardware.

https://www.bizjournals.com/dallas/news/2019/10/21/texas-instruments-closes-south-campus-storm-damage.html

The South Campus site is now re-opened, but my office (containing my hardware) is still closed.

Regards,
Frank

Hi Frank

    When I debug, it pop up message box

An internal error occurred during: "Computing hover expression".
java.lang.NullPointerException

What is wrong with it?

We must go through all your example projects for AM3358 on BeagleBone Black and have better understanding on AM3358 before we go ahead. The workable DMA mode is big plus because DMA can improve the performance no matter with SPI and UART.

When I execute edmaresmgr.c line 6147 ptrEdmaccRegs->EMCR = EDMA3_RM_SET_ALL_BITS; I get message

Break at address "0x80022c10" with no debug information available, or outside of program code.

what should I do? Is it memory issue? I notice task = Task_create(masterTaskFxn, NULL, &eb);

Task use default value. What is default value? Is it large enugh? Thanks

Anping,

I've looped in a colleague who's currently in a better position to help you. Thanks for your patience.

Regards,
Frank

Hi Anping,

I was able to reproduce the issue you observed: "When I execute edmaresmgr.c line 6147 ptrEdmaccRegs->EMCR = EDMA3_RM_SET_ALL_BITS; I get message. Break at address "0x80022c10" with no debug information available, or outside of program code."

Essentially this is caused by MMU configuration for EDMA TPCC, can you please try to add the followings in .cfg file:

var peripheralBaseAddr = 0x49000000;

/* Configure the corresponding MMU page descriptor accordingly */
Mmu.setFirstLevelDescMeta(peripheralBaseAddr,
peripheralBaseAddr,
peripheralAttrs);

Regards,

Garrett

Anping,

Thanks for your confirmation! Yes, we have created an internal JIRA ticket to track the issue and merge the fix in future PRSDK releases.

Regards,

Garrett

Hi Garrett

     For MCSPI_SlaveMode_MasterExample_bbbAM335x_armExampleProject

spi_cfg.edmaHandle = MCSPIApp_edmaInit();

execute without crash. But

SPI master slave test master in dma mode have failed

->line 978 SPI_test_mst_slv_xfer return false

->line 834 SPI_verify_data(masterRxBuffer, srcPtr, xferBytes) return false

what is wrong? Thanks

UART_BasicExample_bbbAM335x_armTestProject works fine.

Anping,

Are you still observing this failure?

Regards,
Frank

Hi Frank

     Yes. I think only two boards work together for this test to pass. That is why I want to know how to debug these two McSPI example projects together. Thank

Anping,

Understood, I'll close this thread and use the other thread for our discussions moving forward.

https://e2e.ti.com/support/processors/f/791/t/853640

Regards,
Frank