One of the things missing for Embedded in the GNU linker is that it cannot generate a CRC checksum. Luckily, there is the solution of using SRecord:
CRC Checksum Generation with ‘SRecord’ Tools for GNU and Eclipse
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Tag Archives: Eclipse
Semihosting with GNU ARM Embedded (Launchpad) and Kinetis Design Studio
A while back I wrote two articles about Semihosting: “Semihosting with GNU ARM Embedded (LaunchPad) and GNU ARM Eclipse Debug Plugins” and Semihosting with Kinetis Design Studio. With using the GNU ARM Embedded (lauchpad) in my Kinetis Design Studio, time for a ‘summary’ post :-).
Semihosting Output in Console
Serial Terminal View in Eclipse Luna
If you have read my article “Serial Terminal View with Eclipse Kepler“, then you are aware that using a Terminal view to a serial connection (COM port) under Eclipse Kepler is pretty much broken. I’m moving some of my projects to the more recent Eclipse Luna release, and the good news is that support is back 🙂
Terminal View with connection to board
UART with the FRDM-KL02Z Board
In my classes I’m mainly using the Freescale FRDM-KL25Z board, as it provides the best value for the money, and 128 kByte FLASH with 16 kByte of RAM is enough for many smaller projects. I do have as well the FRDM-KL02Z Board (32 KByte FLASH, 4 KByte of RAM) which is an inexpensive board to evaluate the smaller KL02Z microcontroller. Because someone reported a problem not being able to use the UART over OpenSDA/USB-to-CDC bridge, I have created a demo project which communicates with a console on the host.
FRDM-KL02Z Board
Updated P&E GDB Server for Eclipse: Connect/Attach and Advanced Flash Programming
P&E has upgraded their GDB implementation and interface used in combination with the GNU ARM Eclipse plugins: they support now advanced flash programming options plus the ability to attach/connect to a running target :-). This update is available as Eclipse update.
Advanced Options
USB CDC with the Teensy 3.1 Board
For a project I want to use the Teensy 3.1 board (see “Hacking the Teensy V3.1 for SWD Debugging“) in USB CDC mode: that way the Teensy board can connect to the host and exchange data or attach a console to the Teensy board: that way I can connect the Teensy over USB to the host use the USB as communication interface:
Teensy with Octo WS2811 Board
Solving the 8192 Character Command Line Limit on Windows
There is a really annoying issue with using command line tools on Windows: the maximum length of the command line passed to cmd.exe is 8192 characters (see http://blogs.msdn.com/b/oldnewthing/archive/2003/12/10/56028.aspx). So you think this is not a problem for you, as you would not pass such a long command line to cmd.exe (the DOS shell under Windows)? Well, if you are using Eclipse (as I do) which generates make files (which is the normal way), then the cmd.exe very likely is involved to call the compiler/linker/etc, indirectly with the usage of make.exe. Compiling files is usually not a problem as it does not hit that 8192 limit. However, it is likely that link phase will end up with an error:
Error in the Problems View
If you have such a problem, there is a solution ….
Using the DHT11/DHT22 Temperature/Humidity Sensor with a FRDM Board
For a home automation project I need to know the room temperature and humidity percentage of the room air. Adafruit has an inexpensive DHT11 sensor from http://www.aosong.com which I decided to use for that project.
Test Setup for DHT11 Sensor
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OpenOCD/CMSIS-DAP Debugging with Eclipse and without an IDE
OpenOCD is an open source and free-of-charge debugging solution, which is a great option here at the University of Lucerne, as students do not need to buy an expensive debugging probe. Still, I recommend to buy professional probes like the P&E or Segger ones, as they are worth every (Euro) cent. But for a ‘zero’ budget, OpenOCD with CMSIS-DAP is something to consider. And with Kinetis Design Studio using the GNU ARM Eclipse Plugins, OpenOCD is not that hard to be used. And because both Freescale and GNU ARM Eclipse offer OpenOCD Windows binaries, that connection method is in the reach of Windows users too.
FRDM-KL25Z with OpenOCD Debug
McuOnEclipse Components: 22-Mar-2015 Release
There is a new release of the McuOnEclipse components available on SourceForge, with the following main changes:
- Shell: Fixed and improved history handling.
- MinIni: Option to select local/stack or global memory for buffers
- FreeRTOS: Ability to use the tick counter instead of dedicated timer for performance measurement.
- FSL_USB_Stack: Added deinitialization for USB stack.
- FatFsMemSDHC: added custom card detection and write protection pin handling.
- Multiple Bug Fixes
SourceForge McuOnEclipse
MCU on Eclipse 