CANBusTester

The goal of this device is to test the perfomance of CAN logging devices by measuring the amount of dropped packets.

Requirements

Measure performance of CAN Bus logging devices
- How many packets dropped
- Minimum bus load before packets start dropping
- How long can it handle full bus load before packet loss
Operates at 100% bus load
Can function without any external devices
Surface of the device should not exceed 100 degrees fahrenheit
Device has two independent properly terminated CAN buses
Test subject outputs a log file
- Log file needs time, extended ID, and data
CAN bus tester is able to test any CAN bus logging device
Supports CAN2.0 compliant with ISO11898-2/5
This device will support multiple I/O connection types
- D-sub 9
- D-sub 15
- 3-pin screw terminal
- Barrel Jack (Power input for teensy4.0) -> 12+v step down to 5v
Implements self tests (<1s) to isolate the testing system and verify it works
Supports at least two CAN channels up to 1MB/s
Supports at least one CANFD channel up to 8MB/s
For basic single CAN channel testing, CAN transcievers are bridged.
- This allows testing slow devices without write buffers filling up.
Simple to operate
- Less than 10 seconds to perform a test.
Portable
- Smaller than 6" x 6" x 3"

Teensy 4.0 w/ MCP2562FD
- Flood CAN line(s)
  - Sends messages at 100% bus load to obersve if any packets get dropped
- Configuring and running self tests
Test Subject
- Logs can data
  - Outputs CAN data into a log file that determines wether the test was passed