AM2432: Call SPI Operations in APPL_Application Cause System Reset

Kevin Peng

Part Number: AM2432
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi TI Experts,

Customer is working on AM24x, SDK: ind_comms_sdk_am243x_09_01_00_03, SysCfg: 1.18.0.

They are testing the SSC demo, they found that if they add the SPI read/write operations in the APPL_Application, when the TwinCAT reloads the slave it will cause the system reset.

Please see the modification of the code above to add the SPI inside the APPL_Application.

Another modification customer did is that they connect the TwinCAT in the SBL.

There are two situations will cause the system reset with the above code.

1: During the power on booting process, the below log shows that the system resets 4 times.

2: Reload the slave from the TwinCAT, the below log shows the system reset 1 time.

If customer does not integrate the above SPI operations code in the APPL_Application there will be no such problem.

Could you please let us know what could be the reasons for it?

Thanks,

Kevin

9 months ago

0 Aaron Thomas 9 months ago

TI__Expert 8975 points

Hi,

Let me go through this issue. Will get back by tomorrow.

Regards,
Aaron

0 Kevin Peng 9 months ago in reply to Aaron Thomas

TI__Expert 3772 points

Hi Aaron,

May I know if there is any clue for us so far?

Many Thanks,

Kevin

0 PratheeshGangadhar 9 months ago in reply to Kevin Peng

TI__Mastermind 47631 points

Hi Kevin

Aaron was not able to reproduce this on his setup. Are they trying on EVM (which one?) or custom HW ?

0 Kevin Peng 9 months ago in reply to PratheeshGangadhar

TI__Expert 3772 points

Hi Pratheesh,

Thanks for your reply, yes customer could reproduce this on our EVM board (LP-AM243x).

There are 2 steps to reproduce it.

Step 1: modify the ethercat_slave_beckoff_ssc_demo by making the difference below.

Step 2: when it enters OP, quickly clicks the “reload device”, then we could see the reset.

We could see the TwinCAT error information below when problem happens.

And the corresponding CCS debug information is shown below.

Could you please provide some suggestions for customer?

Many Thanks,

Kevin

0 Prajith Jayarajan 9 months ago in reply to Kevin Peng

TI__Expert 7655 points

Hi Kevin,

I will try to reproduce the issue at my side with the changes. Will update you the status tomorrow latest.

Regards,
Prajith

0 Kevin Peng 9 months ago in reply to Prajith Jayarajan

TI__Expert 3772 points

Hi Prajith,

May I know if you have reproduced it?

Thanks,

Kevin

0 Aaron Thomas 9 months ago in reply to Kevin Peng

TI__Expert 8975 points

Hi Kevin,

I was out of office for a couple of days. We are yet to reproduce this on AM243x-LP. We will update you once we try it from our side.

Regards,
Aaron

0 Kevin Peng 8 months ago in reply to Aaron Thomas

TI__Expert 3772 points

Hi Aaron,

Soft reminder on this case, customer has provided the detailed steps to reproduce this problem.

Could you help for a try to see?

Thanks,

Kevin

0 Aaron Thomas 8 months ago in reply to Kevin Peng

TI__Expert 8975 points

Sorry Kevin. Got caught in another priority task. I will try this and get back to you by EOD Monday.

Regards,
Aaron

0 Keshav Tiwari 8 months ago

TI__Prodigy 560 points

Hi Kevin,
We have been able to reproduce this issue on our side. Currently we are looking into this issue and will get back to you soon with the findings.

Regards,
Keshav

0 Kevin Peng 8 months ago in reply to Keshav Tiwari

TI__Expert 3772 points

Hi Keshav,

Thanks to let me know!

Kevin

0 Keshav Tiwari 8 months ago

TI__Prodigy 560 points

Hi Kevin I have a few questions about their setup.

What is the transfer mode of MCSPI? Callback or Blocking? They can set it from sysconfig.

If possible can you ask them to share the sysconfig file?

0 Kevin Peng 8 months ago in reply to Keshav Tiwari

TI__Expert 3772 points

Hi Keshav,

Thanks for your reply, I just received the sysconfig file from the customer below.

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/908/0827.example.syscfg

Thanks for your help, and please let me know if there is anything needed,

Kevin

+1 Keshav Tiwari 8 months ago

TI__Prodigy 560 points

Hi Kevin,
In the syscfg file, I see that the operating mode is Interrupt mode and the transfer mode is callback mode. The interrupt blocking caused by the MCSPI transfer is interfering with the EtherCAT.
I tried running the application with Polled mode instead of Interrupt mode and the application seems to be working fine. So I would recommend to use the Polled mode. Please ask the customer to use Polled mode. In case if there is any issue, please get back to us.

Regards,

Keshav

0 Kevin Peng 7 months ago in reply to Keshav Tiwari

TI__Expert 3772 points

Hi Keshav,

Thanks for your help, this indeed could solve the problem, thank you!

Kevin

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AM2432: Call SPI Operations in APPL_Application Cause System Reset