Figure 16. Quickstart panel
Wait for the console to finish the build. This may take a few minutes.
shows the result of a successful compilation of the
sln_local2_iot_local_demo project.
Figure 17. Console window showing successful compilation
5.3 Turning off image verification
The SLN-LOCAL2-IOT kit has the image verification turned on by default. This has the security feature of only booting images that
are signed with the Certificate Authority that is associated with the application certificate and the Certificate Authority certificate
programed in the flash. This disables programming an image into the flash and booting successfully.
For development purposes, consider turning this feature off to avoid signing images or when using NXP’s security material, to
avoid signing images. To do this, image verification must be turned off for both the bootstrap and the bootloader components.
When moving to production, it is suggested to turn the image verification on. To turn the image verification on, there is a single
macro change required. The verification is application-specific, so if the entire security chain must be enabled, the setting must
be updated in both the bootstrap and the bootloader applications.
5.3.1 Turning off bootstrap image verification
To turn off the image verification within the bootstrap, code modifications are required. Within the MCUXpresso IDE bootstrap
project, right-click the root project and navigate to:
• Properties > C/C++ Build > Settings ->Preprocessor
Inside the Preprocessor section, change the MACRO “DISABLE_IMAGE_VERIFICATION” to “1” and click Apply and Close, as
shown in
.
NXP Semiconductors
Building and programming with MCUXpresso
SLN-LOCAL2-IOT Developer’s Guide, Rev. 0, 19 April 2021
User's Guide
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