226 CHAPTER 5 Working with J-Link and J-Trace
J-Link / J-Trace (UM08001) ©
2004-2017 SEGGER Microcontroller GmbH & Co. KG
Example
CORESIGHT_SetIndexAPBAPToUse = 2
5.12.1.4 device
This command selects the target device.
Syntax
device = <DeviceID>
DeviceID has to be a valid device identifier. For a list of all available device identifi-
ers please refer to chapter Supported devices on page 250.
Example
device = AT91SAM7S256
5.12.1.5 DisableAutoUpdateFW
This command is used to disable the automatic firmware update if a new firmware is
available.
Syntax
DisableAutoUpdateFW
5.12.1.6 DisableCortexMXPSRAutoCorrectTBit
Usually, the J-Link DLL auto-corrects the T-bit of the XPSR register to 1, for Cortex-M
devices. This is because having it set as 0 is an invalid state and would cause several
problems during debugging, especially on devices where the erased state of the flash
is 0x00 and therefore on empty devices the T-bit in the XPSR would be 0. Anyhow, if
for some reason explicit disable of this auto-correction is necessary, this can be
achieved via the following command string.
Syntax
DisableCortexMXPSRAutoCorrectTBit
5.12.1.7 DisableFlashBPs
This command disables the FlashBP feature.
Syntax
DisableFlashBPs
5.12.1.8 DisableFlashDL
This command disables the J-Link FlashDL feature.
Syntax
DisableFlashDL
5.12.1.9 DisableInfoWinFlashBPs
This command is used to disable the flash download window for the flash breakpoint
feature. Enabled by default.
Syntax
DisableInfoWinFlashBPs
5.12.1.10DisableInfoWinFlashDL
This command is used to disable the flash download information window for the flash
download feature. Enabled by default.
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