TDA4VM: MCAN Demo trigger interrupt unexpectedly in vision_app environment

Hi,

Can you please share some information on how you have integrated this demo in the vision apps? Are you enabling mcu1_0 in vision apps and running openvx framework on mcu1_0? 

I see you are accessing 0xe331001a location for irqstatus, is it correct location? or is it the irq status? Also are you following same way for clearing the interrupt? 

Regards,

Brijesh

Thank you for reply my question. 

we put the example "

ti-processor-sdk-rtos-j721e-evm-08_04_00_06/pdk_jacinto_08_04_00_21/packages/ti/csl/example/mcan/mcanEvmLoopback/mcan_evm_loopback_app_main_k3" into "

ti-processor-sdk-rtos-j721e-evm-08_04_00_06/vision_apps/platform/j721e/rtos/mcu1_0",and change the boot way from SBL to SPL. We have enabled mcu1_0 in vision apps and not run openvx framwork on mcu1_0 only add the module "mcan_evm_loopback_app_main_k3".

     I don"t know why produce the irqstatus 0xe331001a, only read the irq status in the location produce  0x8000000. and I have  cleared  the interrupt but  the interrupt cannot be cleared .

     Interrupt handling is attached below,

static void App_mcanIntr0ISR(uintptr_t arg)
{
uint32_t intrStatus;
CAN_MSG_FIELD_T *msg_info;
uint32_t intrStatus_test;
MCAN_ProtocolStatus protStatus;

MCAN_getProtocolStatus(gMcanModAddr, &protStatus);
App_ConsolePrintf("CAN:App_mcanIntr0ISR from gMcanModAddr, lastErrCode = 0x%x, dlec = 0x%x \n",protStatus.lastErrCode,protStatus.dlec);

intrStatus = MCAN_getIntrStatus(gMcanModAddr);
App_ConsolePrintf("CAN:App_mcanIntr0ISR from gMcanModAddr,intrStatus = 0x%x. \n",intrStatus);
MCAN_clearIntrStatus(gMcanModAddr_lpbk, intrStatus);
intrStatus_test = MCAN_getIntrStatus(gMcanModAddr);
App_ConsolePrintf("CAN:App_mcanIntr0ISR from gMcanModAddr,intrStatus_test= 0x%x. \n",intrStatus_test);

if (MCAN_INTR_SRC_TRANS_COMPLETE ==
(intrStatus & MCAN_INTR_SRC_TRANS_COMPLETE))
{
gMcanIsrIntr0Flag = 0U;
}

if (MCAN_INTR_SRC_DEDICATED_RX_BUFF_MSG ==
(intrStatus & MCAN_INTR_SRC_DEDICATED_RX_BUFF_MSG))
{
gMcanIsrIntr1Flag = 0U;
}

intrStatus = MCAN_getIntrStatus(gMcanModAddr_lpbk);
App_ConsolePrintf("CAN:App_mcanIntr0ISR from gMcanModAddr_lpbk,intrStatus = 0x%x. \n",intrStatus);
MCAN_clearIntrStatus(gMcanModAddr_lpbk, intrStatus);
intrStatus_test = MCAN_getIntrStatus(gMcanModAddr_lpbk);
App_ConsolePrintf("CAN:App_mcanIntr0ISR from gMcanModAddr_lpbk,intrStatus_test = 0x%x. \n",intrStatus_test);

if (MCAN_INTR_SRC_TRANS_COMPLETE ==
(intrStatus & MCAN_INTR_SRC_TRANS_COMPLETE))
{
gMcanIsrIntr0Flag_lpbk = 0U;
}

if (MCAN_INTR_SRC_DEDICATED_RX_BUFF_MSG ==
(intrStatus & MCAN_INTR_SRC_DEDICATED_RX_BUFF_MSG))
{
gMcanIsrIntr1Flag_lpbk = 0U;
}
}

Hi Renf shi,

what does "yqq :app ...." in the log represents ? I don't see that part in the mentioned code. Could you share more details of it ?

Renf Shi said:

MCAN_getProtocolStatus(gMcanModAddr, &protStatus);
App_ConsolePrintf("CAN:App_mcanIntr0ISR from gMcanModAddr, lastErrCode = 0x%x, dlec = 0x%x \n",protStatus.lastErrCode,protStatus.dlec);

intrStatus = MCAN_getIntrStatus(gMcanModAddr);
App_ConsolePrintf("CAN:App_mcanIntr0ISR from gMcanModAddr,intrStatus = 0x%x. \n",intrStatus);
MCAN_clearIntrStatus(gMcanModAddr_lpbk, intrStatus);
intrStatus_test = MCAN_getIntrStatus(gMcanModAddr);
App_ConsolePrintf("CAN:App_mcanIntr0ISR from gMcanModAddr,intrStatus_test= 0x%x. \n",intrStatus_test);

if ISR  is called, all the prints has to come but i see only one print and later were skipped which shouldn't happen.

Using JTAG debugger, Kindly keep a break point and step through App_mcanIntr0ISR , it would be preferable using memory browser if you write the

intrstatus into MCAN_IR address and check whether this clears or not.

Regards

Tarun Mukesh

I‘m sorry that the log "yqq:App" is replaced  by"CAN:App".

 Now,i catched the log again, following is the issue log and source code.

5_2023-02-21_20-12-20.logcanManage_byd.c

Tarun Mukesh Puvvada said:

using

 I have used JTAG debugger , cannot clear the MCAN_IR ,the value go to its original state soon

Hello,

Observations from the log:

LEC = 0x2 , which indicates form error and details of this can be found in this FAQ

 https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/08_02_00_05/exports/docs/pdk_jacinto_08_02_00_21/docs/userguide/jacinto/faq/faq_can.html

due to this in ISR , intrStatus = 0x8000000  . 27th bit is set and MCAN_INTR_SRC_DEDICATED_RX_BUFF_MSG is the 19th bit required to make gMcanIsrIntr1Flag = 0. but never getting satisfied .

As gMcanIsrIntr1Flag is not going to zero 

while (gMcanIsrIntr1Flag)

{}

 

in the APP_mcanRxTest() keeps on going.

But why does MCU_MCAN1 IR register showing the values is still not clear here ?

Regards

Tarun Mukesh

Hi,

I know what you said ,my question is the same config have error in  "ti-processor-sdk-rtos-j721e-evm-08_04_00_06/vision_apps/platform/j721e/rtos/mcu1_0" but normal in "ti-processor-sdk-rtos-j721e-evm-08_04_00_06/pdk_jacinto_08_04_00_21/packages/ti/csl/example/mcan/mcanEvmLoopback/mcan_evm_loopback_app_main_k3",  and i stopped  send canfd data use another node, the interrupt is  still triggered continuously in mcu1_0 and connot stopped.

Hi,

Can you please share the changes you did as a patch in vision apps? 

Renf Shi said:

ti-processor-sdk-rtos-j721e-evm-08_04_00_06/pdk_jacinto_08_04_00_21/packages/ti/csl/example/mcan/mcanEvmLoopback/mcan_evm_loopback_app_main_k3" into "

ti-processor-sdk-rtos-j721e-evm-08_04_00_06/vision_apps/platform/j721e/rtos/mcu1_0",and change the boot way from SBL to SPL. We have enabled mcu1_0 in vision apps and not run openvx framwork on mcu1_0 only add the module "mcan_evm_loopback_app_main_k3".

To comprehend the flow of API's from main.c in vision apps to API's in mcan_evm_loopback_app_main.c

and also confirm the below points

1) Is  PDK CAN example and vision Apps CAN example running on same environment  ? 

    Receiver's test (Option 2)  was opted as seen in the log for vision apps. The external CAN emulator(Other node) configuration is same or not for PDK

    and   vision apps ?

2) Are you running  any other features on other cores ? i.e, Is there any core configuring the CAN module too ?

3) After moving PDK CAN to Vision apps , is the entire SDK compiled or only vision apps ? if only vision apps could you please do entire SDK clean build

& let me know .

Regards

Tarun Mukesh