Adding GNU Coverage Tools to Eclipse

The GNU tools include powerful utilities to collect coverage information. With coverage I know which lines of my code have been executed, which is a very useful test metric. The GNU coverage tools are commonly used for Linux applications. But to my surprise not much for embedded application development, mostly because it requires a few extra steps to have it available? Why not using free and powerful tools for improving software quality? This article explains how to install the GNU gcov tools into the Eclipse IDE.

gcov with Embedded Target

gcov with Embedded Target

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ARM SWO Performance Counters

In “Cycle Counting on ARM Cortex-M with DWT” I have used the ARM DWT register to count the executed cycles. With the MCUXpresso IDE comes with a very useful feature: it can capture the ARM SWO (Single Wire Output) trace data. One special kind of trace data is the ‘cycle counter’ information which is sent through SWO.

SWO Counters

SWO Counters

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2017 Spring Semester Sumo Challenge

Video

The spring university semester is coming to an end, and the Infotronic course closed with a Sumo robot challenge. Great challenge, new technologies, innovative approaches and funny designs 🙂

Groot

Groot

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MCUXpresso IDE: Blinky the NXP LPC800-DIP Board

During Embedded World 2017 in Nürnberg I was lucky to get a handful LPC800-DIP boards. To get all students who were lucky to get one, here is a tutorial to make that very exciting ‘blinky’ application on that board:

Blinky on the NXP LPC800-DIP

Blinky on the NXP LPC800-DIP

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MCUXpresso IDE: Terminate and Disconnect a Debug Session

Eclipse for C/C++ (CDT) offers two different ways to get out of a debug session: Terminate and Disconnect:

Terminate and Disconnect

Terminate and Disconnect

The terminate and disconnect behaviour is not standardized, and varies between Eclipse distributions and debug connection. This article is about how things are handled in MCUXpresso IDE, and how I can influence the behaviour.

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Using Eclipse to Program Binary Files to an Embedded Target

I’m using Eclipse based IDE’s to develop and debug my embedded applications. This works great, as Eclipse has all the necessary tools to edit, build and debug it. But when it comes just to download/flash a binary to the board, then things are pretty much specific to the tools used. With the advent of the new MCUXpresso IDE, here is how that Eclipse IDE can be used for this.

LinkServer GUI Flash Programmer

LinkServer GUI Flash Programmer

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Using the LPCXpresso V2/V3 Boards to Debug an external Board

The MCUXpresso IDE (see “MCUXpresso IDE: Unified Eclipse IDE for NXPs ARM Cortex-M Microcontrollers“) has one great feature: it includes debug support for the popular LPC-Link2 debug probes. That way I have yet another powerful debug probe with extra features for ARM based boards. That LPC-Link2 circuit is present on many LPCXpresso boards from NXP. So why not using it to debug it my custom hardware?

Debugging Custom Hardware with LPCXpresso Board

Debugging Custom Hardware with LPCXpresso Board

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Modifying the Teensy 3.5 and 3.6 for ARM SWD Debugging

Looking for a small, inexpensive ($25-30) ARM development board (say 120-180 MHz ARM Cortex-M4 with FPU, 512kB-1MB of FLASH and 256 KByte of RAM? Then have a look at the Teensy 3.5 and Teensy 3.6 by PJRC/Paul Stoffregen:

Teensy 3.6 with NXP K64

Teensy 3.5 with NXP K64F ARM Cortex-M4F

The only problem? it is not possible to debug it :-(. At least not in the traditional sense. This article is about how to change the board to use it with any normal SWD debugging tool e.g. Eclipse and the Segger J-Link :-).

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Enable Secure Communication with TLS and the Mosquitto Broker

MQTT is a lightweight  and broadly used internet protocol (see “MQTT with lwip and NXP FRDM-K64F Board“). And probably the majority of IoT applications today are using Mosquitto as server (or ‘broker’ in MQTT language). By default, Mosquitto is using a protocol without encryption. In “Introduction to Security and TLS (Transport Layer Security)” I have covered the basics and needs for encryption. This article is about how to enable Mosquitto and clients to use the TLS protocol.

TLS Handshaking with certificates and keys

TLS Handshaking with certificates and keys

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Automatically Refresh Eclipse Projects before Build

The Eclipse CDT build system automatically scans the files in my project folders and adds them to the list of files to be built. That works great if files are added through Eclipse and its plugins: That way Eclipse is notified and aware, and has the files added. But what if I have added files externally (outside of Eclipse)? how can I make Eclipse aware of it?

File added but not shown

File added but not shown in Eclipse Project View

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MCUXpresso IDE: Importing Kinetis Design Studio Projects

Many of my currently active projects are using Kinetis Design Studio (KDS) V3.2.0 from NXP (I have published many of my projects on GitHub). Now with the advent of the MCUXpresso IDE (see “MCUXpresso IDE: Unified Eclipse IDE for NXPs ARM Cortex-M Microcontrollers“), I have migrated several projects from KDS to MCUXpresso. This post is about how to easily get KDS projects ported and running in MCUXpresso IDE.

Debugging KDS Project in MCUXpresso IDE

Debugging KDS Project in MCUXpresso IDE

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MCUXpresso IDE: Adding the Eclipse Marketplace Client

One great thing with Eclipse compared to proprietary IDEs are the thousands of available plugins. Yes, not every plugin is probably on the ‘must have’ list (I have listed some in a series starting with “5 Best Eclipse Plugins: #1 (Eclox with Doxygen, Graphviz and Mscgen)“).

The ‘traditional’ approach to install Eclipse plugins is using the menu Help > Install New Software. Using that approach, I have to use or enter an Eclipse update site. An easier way is to use the Eclipse Marketplace plugin which allows me to search and browse for plugins and simplifies installation of it. But as this one does not come installed by default with MCUXpresso. But it is my preferred way to browse and install plugins into Eclipse:

Eclipse Marketplace under Eclipse Neon and MCUXpresso IDE

Eclipse Marketplace under Eclipse Neon and MCUXpresso IDE

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MCUXpresso IDE: S-Record, Intel Hex and Binary Files

This is another article about the NXP MCUXpresso IDE (see “MCUXPresso IDE: Unified Eclipse IDE for NXPs ARM Cortex-M Microcontrollers“), this time it is about Post-build steps. Post-build steps are custom actions which can be executed after the build (or link phase), and are typically used to generate S-Record, Binary or Intel Hex files (see “S-Record, Intel Hex and Binary Files“).

Post Build Steps Details

Post Build Steps Details

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Tutorial: Using Eclipse with NXP MCUXpresso SDK v2 and Processor Expert

To me, software and tools are by far more important than the microcontroller. Because the silicon is a ‘one time kind of thing’, where the software has to be maintained and working over a longer time. And at least my software usually needs to be ported to a new device, so portability and available software and tools are critical to me.

The combination of MCUXpresso SDK (formerly Kinetis SDK) and Processor Expert is unfortunately not supported by NXP. But I have found a way to get them work together in a nice way, and this article is about making that combination possible :-).

SDKv2 Project with Processor Expert

SDKv2 Project with Processor Expert which is supposed not to work together

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Better FreeRTOS Debugging in Eclipse

With debugging FreeRTOS applications in Eclipse, it is a big to have views available showing all the threads, queues, timers and heap memory allocation. One of the best Eclipse plugins are the one NXP provides for FreeRTOS: they are free of charge and give me pretty much everything I need. However, if you are not that familiar with FreeRTOS itself, here are a few tips to get more out of the plugins.

Better FreeRTOS Debugging in Eclipse

Better FreeRTOS Debugging in Eclipse

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Percepio FreeRTOS Tracealyzer Plugin for Eclipse

Good news for everyone using Eclipse, FreeRTOS and Percepio Tracealyzer: Percepio has released an Eclipse plugin which makes snapshot tracing very easy and convenient using the a GNU gdb debugger in Eclipse like Kinetis Design Studio:

Eclipse with Percepio Tracealizer

Eclipse with Percepio Tracealyzer

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P&E ARM Cortex-M Debugging with FreeRTOS Thread Awareness and Real Time Expressions for GDB and Eclipse

P&E has a new version of their GDB/Eclipse debug plugins available on their Eclipse update site, and it comes with to great features: Real Time Expressions (show variables while target is running) and  FreeRTOS thread awareness 🙂

FreeRTOS Thread Awareness

FreeRTOS Thread Awareness

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Tips for Making Copy of Eclipse CDT Projects Easier

Instead creating a new project from scratch, often it is simpler to copy an existing Eclipse CDT project, then change it and go on.  To copy-past the a project in Eclipse:

  1. Select the project in the Project Explorer View (CTRL-C on Windows)

    Copy of a project

    Copy of a project

  2. Then paste it in the Project Explorer View (CTRL-V on Windows), and I can specify the new name:

    Paste of Project

    Paste of Project

However, to make that process simpler, a few things have to be done right in the ‘source’ project first.

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