1 Introduction

The objective of this application report is to provide an easy-to-use hardware and software framework to generate and analyze different types errors in a CAN bus. Two different methods are presented:

• GPIO method: A test-case that could be run on any applicable C2000 device. This provides visibility on a GPIO pin, if desired. A working C2000 target board and Code Compose Studio™ (CCS) IDE is all that is required.

• LabVIEW method: This method is useful in case integration into a larger test setup (independent of a C2000 target) is desired. This needs the hardware outlined in Section 3.

For both methods, an oscilloscope with built-in CAN bus triggering/decoding is essential.

All simulated waveforms in this document were captured at the GPIO pin emulating the CAN transmit function. The effect of a CAN receiver node detecting an error and destroying the on-going frame will not be seen since the waveforms do not reflect true CAN bus activity, but only emulated CAN function. For this reason, the complete “CAN waveform” is seen in the oscilloscope captures. CAN frames shown in Table 1-1 were generated with GPIO and LabVIEW methods. These simulated frames were monitored with a CAN bus analyzer. The correct interpretation of the frames by the analyzer was validation that the frames are generated correctly and consistently.