µVISION DEBUGGER: CAN SIMULATION PROBLEMS WITH THE C167C

Information in this article applies to:

• µVision Version 2.20

QUESTION

I'm using the µVision CAN simulation for the C167CR and I am having trouble injecting data into the simulated CAN bus. Specifically, I have the following debugger script:

func void inject_CAN_message (unsigned long ID, unsigned char x) {

  CAN1L = 8;      /* 8-byte message */

  CAN1B0 = x;
  CAN1B1 = ++x;
  CAN1B2 = ++x;
  CAN1B3 = ++x;
  CAN1B4 = ++x;
  CAN1B5 = ++x;
  CAN1B6 = ++x;
  CAN1B7 = ++x;

  CAN1ID = ID;    /* Set CAN message ID */

  CAN1IN = 1;
}

The CAN message that I inject appears to be correct in the Communication page of the CAN driver simulation in µVision. However, when my program reads the data it is garbage. Is this a known problem?

ANSWER

Yes. This problem is corrected in V4.22 (and later) of the C166 software update. You may download the latest updates from the Keil Website.

Last Reviewed: Friday, June 03, 2005