MCU-PLUS-SDK-AM263X: AM2632 Bootloader, CAN Driver RX ISR has trigger-lost problem.

Jay Sun

Intellectual 925 points

Part Number: MCU-PLUS-SDK-AM263X
Other Parts Discussed in Thread: AM2632

Hi,

We develop MCU AM2632 bootloader refer sample code examples\drivers\boot\sbl_qspi.

Now we have a problem for CAN RX message.

For CAN drive, TX ISR is work well when send TX message, but RX ISR has lost-trigger problem when receive RX message.

RX ISR can be triggered with lost message, ex, receiver 10 can messages, only trigger 4-5 times RX ISR.(40%-50% message receive)

We try CAN0-CAN3, and they all have this problem.

BUT with the same CAN driver, MCU APP can work well, and has no this problem.

Please provide some suggestion for this problem.

Thanks.

over 2 years ago

0 Frank Livingston over 2 years ago

TI__Mastermind 28918 points

Hi Jay,

Is this the same SBL software mentioned here? https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1110095/am2634-sbl-can-issue

Or is this different SBL software?

Can you share a simple example code (entire CCS project) that clearly demonstrates the problem which executes on an AM263x CC?

Regards,
Frank

0 Jay Sun over 2 years ago in reply to Frank Livingston

Intellectual 925 points

Hi Frank

This it the same SBL software , this thread shows CAN Driver RX ISR has trigger-lost problem, we also find CAN TX issue in the other thread.
https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1110095/am2634-sbl-can-issue

we will attach example code in there.

JAY

0 Frank Livingston over 2 years ago in reply to Jay Sun

TI__Mastermind 28918 points

Jay,

I'll take a look at get back with you.

Regards,
Frank

0 Sunil Kumar M S over 2 years ago

TI__Genius 11940 points

Hi Jay,

Which CAN driver are you using? Are you using MCUSDK MCAN driver present in source/drivers/mcan?

Can you elaborate your issue? Basically you have configured CAN receiver to receive 10messages and you sending 10 messages but it is only receiving 4 to 5 times is it?

When you say MCU APP is working, Can you provide the reference in which it is working?

Regards,

Sunil Kumar M S

0 Jay Sun over 2 years ago

Intellectual 925 points

Yes. I use MCAN driver form source\drivers\mcan\v0\mcan.c
When CAN analyzer sending 10 message then MCAN RX getting 4~5 message.
The reason is interrupt not triggered.
When MCAN0 RX "NOT" received message, MCAN0_CFG_IR register also not changed.
(MCAN0~3 have same situation)

I use same driver in APP and SBL, but MCAN can work in APP and not in SBL.

0 Sunil Kumar M S over 2 years ago in reply to Jay Sun

TI__Genius 11940 points

Hi Jay,

Can you please clarify, what you meant working in APP? Is it when you test using CCS?

Can you share the RX filter configuration to receive these 10 messages?Are you sending messages with same message Id?

Regards,

Sunil Kumar M S

0 Jay Sun over 2 years ago

Intellectual 925 points

APP means using freertos project environment test MCAN.
e.g. mcu_plus_sdk_am263x_08_02_00_28\examples\drivers\mcan\mcan_loopback_interrupt\am263x-cc\r5fss0-0_freertos

CAN TX test use same message ID.
But even sending 1 message in 1 sec, SBL still have 50% fail rate.

MCAN setting please refer attach file:
am263x_zcu_sbl.7z\am263x_zcu_sbl\SourceCode\HHSourceCode\HHCAN.c
download path:
drive.google.com/.../view

0 Sunil Kumar M S over 2 years ago in reply to Jay Sun

TI__Genius 11940 points

Hi Jay,

Looks like your configuration is fine. Can we have a meeting to debug this issue? Please let me know your convenient timing.

Regards,

Sunil Kumar M S

0 Jay Sun over 2 years ago in reply to Sunil Kumar M S

Intellectual 925 points

Hi Sunil

Our available time: 2:00-5:00 pm

please send webex link by email:jay.jj.sun@foxconn.com

+1 Sunil Kumar M S over 2 years ago in reply to Jay Sun

TI__Genius 11940 points

Hi Jay,

I have sent an email for the modifications required in main function. Please check.

I have verified on AM263x-CC and it is working.

Regards,

Sunil Kumar M S

0 Jay Sun over 2 years ago

Intellectual 925 points

We got another MCAN issue.
SBL hanged when MACN RX receiving too much data.

Test project provided in previous mail.

Test step: (Please refer attach file)

Main() call HHCAN_CheckCanISRStatus() to check MCAN FIFO data in ApiCan_ReceiveFIFOMessage() every 5ms
Add test counter when getting data. (Attach project use CAN ID 0x705)
CAN Analyzer sending data: CAN ID 0x705, interval 10ms, sending 10000 times
Check counter by UART log or CCS

Test result: SBL hanged with unknow reason and counter <10000

0 Frank Livingston over 2 years ago in reply to Jay Sun

TI__Mastermind 28918 points

Jay,

Is this still an issue?

Regards,
Frank

0 Jay Sun over 2 years ago in reply to Frank Livingston

Intellectual 925 points

Hi Frank

This thread is ok, We open another thread for SBL hanged when MACN RX receiving too much data.
MCU-PLUS-SDK-AM263X: AM2632 Bootloader, CAN RX receiving data problem. - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

Jay

0 Frank Livingston over 2 years ago in reply to Jay Sun

TI__Mastermind 28918 points

Hi Jay,

Got it, thanks. I'll close this thread.

Regards,
Frank