Segger J-Link - Page 19

J-Link / J-Trace (UM08001) © 2004-2017 SEGGER Microcontroller GmbH & Co. KG
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4.7.4 Determining which DLL is used by a program ............................................ 172
4.8 Getting started with J-Link and ARM DS-5................................................. 173
4.8.1 Replacing the RDDI DLL manually ............................................................ 173
4.8.2 Using J-Link in DS-5 Development Studio ................................................. 173
5 Working with J-Link and J-Trace..................................................................................175
5.1 Connecting the target system.................................................................. 176
5.1.1 Power-on sequence................................................................................ 176
5.1.2 Verifying target device connection ........................................................... 176
5.1.3 Problems .............................................................................................. 176
5.2 Indicators............................................................................................. 177
5.2.1 Main indicator ....................................................................................... 177
5.2.2 Input indicator ...................................................................................... 179
5.2.3 Output indicator .................................................................................... 179
5.3 JTAG interface....................................................................................... 180
5.3.1 Multiple devices in the scan chain ............................................................ 180
5.3.2 Sample configuration dialog boxes ........................................................... 180
5.3.3 Determining values for scan chain configuration......................................... 183
5.3.4 JTAG Speed .......................................................................................... 184
5.4 SWD interface ....................................................................................... 185
5.4.1 SWD speed........................................................................................... 185
5.4.2 SWO .................................................................................................... 185
5.5 Multi-core debugging ............................................................................. 187
5.5.1 How multi-core debugging works ............................................................. 187
5.5.2 Using multi-core debugging in detail ........................................................ 188
5.5.3 Things you should be aware of ................................................................ 189
5.6 Connecting multiple J-Links / J-Traces to your PC ...................................... 191
5.6.1 How does it work? ................................................................................. 191
5.7 J-Link control panel................................................................................ 193
5.7.1 Tabs .................................................................................................... 193
5.8 Reset strategies .................................................................................... 199
5.8.1 Strategies for ARM 7/9 devices................................................................ 199
5.8.2 Strategies for Cortex-M devices ............................................................... 201
5.9 Using DCC for memory access ................................................................. 204
5.9.1 What is required? .................................................................................. 204
5.9.2 Target DCC handler ............................................................................... 204
5.9.3 Target DCC abort handler ....................................................................... 204
5.10 The J-Link settings file............................................................................ 205
5.10.1 SEGGER Embedded Studio...................................................................... 205
5.10.2 Keil MDK-ARM (uVision).......................................................................... 205
5.10.3 IAR EWARM .......................................................................................... 205
5.10.4 Mentor Sourcery CodeBench for ARM........................................................ 205
5.11 J-Link script files ................................................................................... 206
5.11.1 Actions that can be customized ............................................................... 206
5.11.2 Script file API functions .......................................................................... 208
5.11.3 Global DLL variables .............................................................................. 213
5.11.4 Global DLL constants.............................................................................. 217
5.11.5 Script file language ................................................................................ 219
5.11.6 Script file writing example ...................................................................... 220
5.11.7 Executing J-Link script files ..................................................................... 220
5.12 Command strings .................................................................................. 223
5.12.1 List of available commands ..................................................................... 223
5.12.2 Using command strings .......................................................................... 241
5.13 Switching off CPU clock during debug ....................................................... 243
5.14 Cache handling...................................................................................... 244
5.14.1 Cache coherency ................................................................................... 244
5.14.2 Cache clean area ................................................................................... 244
5.14.3 Cache handling of ARM7 cores................................................................. 244
5.14.4 Cache handling of ARM9 cores................................................................. 244
5.15 Virtual COM Port (VCOM) ........................................................................ 245
5.15.1 Configuring Virtual COM Port ................................................................... 245