CAN bus SendFrameExt() loss 1 message

[aaronlee]

Hi,

We are using S12ZVCA for my project. We have a issue in CAN1_SendFrameExt().

bLength = 1;
pCAN_Frame_Tx = bCAN_Frame_Tx;
for(i=100;i<200;i++)
{
   dwCAN_ID = i;
   *pCAN_Frame_Tx = i-100;
   while((CAN0TFLG & 0x07U) == 0U);
   CAN1_SendFrameExt(dwCAN_ID, DATA_FRAME, bLength, bCAN_Frame_Tx);
}

It is loss the 3rd message.

OUTPUT:

00 64 00
00 65 01  (loss 00 66 02)
00 67 03
00 68 04
00 69 05
00 6A 06
00 6B 07
00 6C 08
00 6D 09
00 6E 0A
00 6F 0B
00 70 0C
......

Do you have any recommend?

Best Regards,

Aaron

[aaronlee · Accepted solution]

Hi,

I resolve the issue.

Click the Advanced and change the Clock source from Auto select to MSCAN0ExtClk in Processor Expert.

Best Regards,

Aaron