New versions of MCUXpresso SDK, IDE, and Configuration Tools are now available. In addition to new product support, you will find these updates and enhanced features in the new releases

SPDK (Storage Performance Development Kit) is an optimized storage reference architecture. It is initiated and developed by Intel.

SPDK provides a set of tools and libraries for writing high performance, scalable, user-mode storage applications. It achieves high performance by moving all of the necessary drivers into userspace and operating in a polled mode, like DPDK.

We are pleased to announce that MCUXpresso IDE v11.0.0 (build 2516) is now available.

This is a major new version of the IDE, and contains many new features and enhancements over the previous MCUXpresso IDE v10.3.1 and earlier releases. The attached presentation, recommended viewing for all users (new or experienced), provides an overview of many of the major changes, as well as things to be aware of when upgrading from an earlier release

This article discusses the use of SDK Trustzone example (Hello World) for the LPC55S69 MCU within MCUXpresso IDE.

The following are required to follow this blog post:

1. MCUXpresso IDE Version 11.0.x
2. LPCXpresso 55S69 EVK development board
3. LPCXpresso 55S69 EVK version 2.6 SDK

When using the QN9080 with SDK v2.2 2019-01-29, or earlier, there is an issue in the SDK internal data which can lead to MCUXpresso IDE v11.0.0 failing to set consistent floating point options when importing multiple examples.

• Disable hw_prefetch (u-boot):

setenv hwconfig 'fsl_ddr:bank_intlv=auto;core_prefetch:disable=0xFE'

qixis reset altbank (reset the board - in case using bank 0 run 'qixis reset' only)

• bootargs or othbootargs - add below parameters to bootargs (u-boot).

                  Make sure you see the same in ‘cat /proc/cmdline’ once kernel is booted:

- use 1G hugepages:

default_hugepagesz=1024m hugepagesz=1024m hugepages=6 (or any number)

- isolate cpu's for user space (for the CPUs running DPDK without kernel interference):

isolcpus=1-7

- make sure no rcu stalls and watchdog prints:

nmi_watchdog=0 rcupdate.rcu_cpu_stall_suppress=1

With the cost of an single pin, many ARM Cortex-M boards including the NXP i.MX RT1064 can produde SWO data: think about a pin able to stream data out of the chip in realtime.