Vector VN8970 User Manual download pdf (Page 9)

List of Figures

1.1 The clutch visualised in a car that is front wheel drive during normal

circumstances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.1 The standard identiﬁer CAN frame with one byte of data. . . . . . . . 17

2.2 The VT-system with its modules mounted in a 19” rack cabinet. Real-

time module to the far left. Power supply below the VT-system. . . . . 19

2.3 The VN8970 device. . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.4 Simulation Setup in CANoe. . . . . . . . . . . . . . . . . . . . . . . 21

2.5 Several TAPs connected through daisy-chain, TRST not shown. This

might illustrate separate devices/chips or different modules on one de-

vice/chip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.6 A standard and a JTAG-modiﬁed ECU. . . . . . . . . . . . . . . . . . 23

2.7 Example debug cases (241, 244 and 250) showing what case could con-

tain what variable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.1 Equipment and set up overview. The different software run be the dif-

ferent devices are shown in red. . . . . . . . . . . . . . . . . . . . . . 26

4.1 The ECU during the test, regular trafﬁc on the CAN bus specifying

driving scenario, status of the car, status of the ECU/AWD clutch, etc,

and the JTAG connection reading a part of the CPU’s memory. . . . . 27

4.2 Accumulated time by the operating schedule for different software and

JTAG data extraction loads. The blue bars represent how much time is

added to the thread by reading the memory. . . . . . . . . . . . . . . 29

4.3 Accumulated time by the suspended schedule for different software and

JTAG data extraction loads. The blue bars represent how much time is

added to the thread by reading the memory. . . . . . . . . . . . . . . 29

5.1 Overview of the ”RS-232 approach” . . . . . . . . . . . . . . . . . . 31

5.2 Software overview of the ’Integrated approach’. . . . . . . . . . . . . 32

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Vector VN8970 User Manual Page 9