Vigor2760-Serie High-Speed VDSL2-Router
Draytek Vigor 2760 VDSL2 modem/router reverse engineering
Draytek Vigor 2760 VDSL Router
Draytek File Server: GPL Source
Draytek Vigor 2760 VDSL2 modem
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Real Time Linux (PREEMPT_RT / Xenomai)
Real-Time Linux Wiki
OSADL – Open Source Automation Development Lab eG
Wikipedia
Xenomai (en)
RTAI (Real Time Application Interface) (en)
RTAI (Real Time Application Interface) (de)
RTLinux (de)
Tutorial
Getting real (time) about embedded GNU/Linux
Realtime Linux für Debian
Introducing Xenomai 3
How fast is fast enough? Choosing between Xenomai and Linux for real-time applications (PDF)
Raspberry Pi
Raspberry Pi 4B: Real-Time System using Preempt-RT (kernel 4.19.y)
Raspberry Pi: Real Time System – Xenomai Patching Tutorial for Kernel 4.14.y
Real-Time Linux on the Raspberry Pi
Echtzeit mit dem Raspberry Pi und Linux PREEMPT_RT
github.com/claudioscordino/rpi3-xenomai
C Packed Structs – just say ‘no’
kernel/Documentation/unaligned-memory-access.txt
LWN.net: Documentation about unaligned memory access
stackoverflow: Is gcc’s __attribute__((packed)) / #pragma pack unsafe?
Wikipedia: Data structure alignment
GeeksforGeeks: Structure Member Alignment, Padding and Data Packing
Seminar „Effiziente Programmierung in C“
Alignment in C
Alignment in C – Präsentation
Eclipse Embedded for ARM
see blog.bachi.net mbed.org
see blog.bachi.net Regular Expression
- Eclipse Neon (4.6)
- Eclipse Mars (4.5)
- Eclipse Luna (4.4)
- Eclipse Kepler (4.3)
- Eclipse Juno (4.2)
How to install the GNU ARM Eclipse plug-ins?
How to install the Windows Build Tools?
GNU ARM Eclipse plug-ins: Received fatal alert: handshake_failure
livius dot net – IT Design & Consulting – Creativity without borders
cross_make / cross_gcc not set
|
|
|
|
Invalid project path: Include path not found
|
Remove:
<entry kind="includePath" name="/${ProjName}/#undef __ARM_FP">
<flag value="BUILTIN|READONLY|VALUE_WORKSPACE_PATH"/>
</entry>
<entry kind="includePath" name="/${ProjName}/#undef __ARM_FEATURE_FMA">
<flag value="BUILTIN|READONLY|VALUE_WORKSPACE_PATH"/>
</entry>
<entry kind="includePath" name="/${ProjName}/#undef __ARM_NEON__">
<flag value="BUILTIN|READONLY|VALUE_WORKSPACE_PATH"/>
</entry>
<entry kind="includePath" name="/${ProjName}/#undef __ARM_NEON">
<flag value="BUILTIN|READONLY|VALUE_WORKSPACE_PATH"/>
</entry>
Add:
<language id="org.eclipse.cdt.core.gcc">
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/lib/gcc/arm-none-eabi/6.3.1/include">
<flag value="BUILTIN|READONLY"/>
</entry>
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/lib/gcc/arm-none-eabi/6.3.1/include-fixed">
<flag value="BUILTIN|READONLY"/>
</entry>
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/arm-none-eabi/include">
<flag value="BUILTIN|READONLY"/>
</entry>
</language>
<language id="org.eclipse.cdt.core.g++">
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/arm-none-eabi/include/c++/6.3.1">
<flag value="BUILTIN|READONLY"/>
</entry>
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/arm-none-eabi/include/c++/6.3.1/arm-none-eabi/thumb/v8-m.main">
<flag value="BUILTIN|READONLY"/>
</entry>
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/arm-none-eabi/include/c++/6.3.1/backward">
<flag value="BUILTIN|READONLY"/>
</entry>
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/lib/gcc/arm-none-eabi/6.3.1/include">
<flag value="BUILTIN|READONLY"/>
</entry>
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/lib/gcc/arm-none-eabi/6.3.1/include-fixed">
<flag value="BUILTIN|READONLY"/>
</entry>
<entry kind="includePath" name="C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q1-update/arm-none-eabi/include">
<flag value="BUILTIN|READONLY"/>
</entry>
</language>
Standards
mbed: CMSIS-DAP
mbed: CMSIS-DAP Interface Firmware
GitHub: mbedmicro/CMSIS-DAP
Keil: CMSIS-DAP
Tutorials
Installing Eclipse for use with FreeRTOS.org
ARM-Projects by Martin THOMAS
Plugins
GNU ARM Eclipse Plug-ins with J-Link Debugging Support
GNU ARM Eclipse Plug-ins
Welcome to the EmbSysRegView Project
Eclipse Embedded Systems Register View, displays special function Registers (SFRs) while debugging
undefined reference to `__real_main'
link: ROME2_P1_A4.elf ../mbed/TARGET_NUCLEO_F446RE/TOOLCHAIN_GCC_ARM/retarget.o: In function `__wrap_main': retarget.cpp:(.text.__wrap_main+0xa): undefined reference to `__real_main' collect2.exe: error: ld returned 1 exit status Solution: add "-Wl,--gc-sections" to LD_FLAGS and LD
Freescale Freedom Board K64 FRDM-K64F
PThread / POSIX Thread
- synchronization
- threads
- barrier point
- pthread_init()
- sem_init()
- pthread_barrier_init
“For real applications there are more polished libraries such as pthreads for kernel threads or GNU Portable Threads (Pth) for user space threads.”
“The GNU Pth (GNU Portable Threads) scheduling itself is done in a cooperative way, i.e., the threads are managed by a priority- and event-based non-preemptive scheduler. The intention is that this way one can achieve better portability and run-time performance than with preemptive scheduling. The event facility allows threads to wait until various types of events occur, including pending I/O on filedescriptors, asynchronous signals, elapsed timers, pending I/O on message ports, thread and process termination, and even customized callback functions.”
Oracle Multithreaded Programming Guide
POSIX Threads Programming
POSIX thread (pthread) libraries
POSIX thread (pthread) libraries
Linux-UNIX-Programmierung – Threads
Parallele Programmierung mit Threads
Introduction to Multi-Threaded Programming, 1999
Eine Einführung in die Programmierung von Threads unter Linux
Implementing a Thread Library on Linux
GNU Pth – The GNU Portable Threads, 2006
Linux Threads Frequently Asked Questions (FAQ), 1996
Joinable and Detached Threads
Oracle Multithreaded Programming Guide: Set Detach State
Joining and Detaching Threads
Joinable and Detached Threads
Pthread create as detached
Thread (computing)
Light-weight process
Fiber (computer science)
Green threads
Thread (Informatik)
User-Thread
Native POSIX Thread Library (NPTL)
Alle Fäden in der Hand – Thread Programmierung unter Linux in C und C++ (Teil 1)
Alle Fäden in der Hand – Thread Programmierung unter Linux in C und C++ (Teil 2)
The Linux compatibility thread!
Thread-Programmierung mit Java
Oracle Multithreaded Programming Guide – Avoiding Deadlock
Map / Reduce
The one line of C code that will make your program ten times faster
Barriere
Semaphore
Monitor
Unix Signals
Level Shifter / Pegelwandler / Spannungswandler
Watterott Level-Shifter
I2C bi-directional level shifter
Bi-Directional Logic Level Converter Hookup Guide
mikrocontroller.net
Pegelwandler
Relais mit Logik ansteuern
MOSFET-Übersicht
a
4-channel I2C-safe Bi-directional Logic Level Converter – BSS138
SparkFun Logic Level Converter – Bi-Directional
Bi-Directional Logic Level Converter Hookup Guide
Adafruit
74AHCT125 – Quad Level-Shifter (3V to 5V) – 74AHCT125
8-channel Bi-directional Logic Level Converter – TXB0108
PHP5
php5-5.4.20 PHP Scripting Language php5-bz2-5.4.20 The bz2 shared extension for php php5-ctype-5.4.20 The ctype shared extension for php php5-dom-5.4.20 The dom shared extension for php php5-exif-5.4.20 The exif shared extension for php php5-fileinfo-5.4.20 The fileinfo shared extension for php php5-filter-5.4.20 The filter shared extension for php php5-gd-5.4.20 The gd shared extension for php php5-hash-5.4.20 The hash shared extension for php php5-iconv-5.4.20 The iconv shared extension for php php5-json-5.4.20 The json shared extension for php php5-mbstring-5.4.20 The mbstring shared extension for php php5-mcrypt-5.4.20 The mcrypt shared extension for php php5-mysql-5.4.20 The mysql shared extension for php php5-openssl-5.4.20 The openssl shared extension for php php5-pdo-5.4.20 The pdo shared extension for php php5-pdo_mysql-5.4.20 The pdo_mysql shared extension for php php5-posix-5.4.20 The posix shared extension for php php5-session-5.4.20 The session shared extension for php php5-simplexml-5.4.20 The simplexml shared extension for php php5-snmp-5.4.20 The snmp shared extension for php php5-xml-5.4.20 The xml shared extension for php php5-zlib-5.4.20 The zlib shared extension for php
extension=mysql.so extension=zlib.so extension=bz2.so extension=openssl.so extension=mbstring.so extension=json.so extension=mcrypt.so extension=xml.so extension=session.so extension=ctype.so extension=gd.so extension=fileinfo.so extension=posix.so extension=dom.so extension=snmp.so extension=simplexml.so extension=iconv.so extension=pdo.so extension=pdo_mysql.so extension=filter.so extension=intl.so extension=exif.so extension=apc.so extension=hash.so
Fatal error: Call to undefined function hash()
PHP5 Extensions
PHP 5.2.6 on FreeBSD with extensions
# /usr/local/bin/php -v PHP 5.4.20 (cli) (built: Oct 13 2013 15:38:29) Copyright (c) 1997-2013 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies Segmentation fault: 11 (core dumped) # gdb /usr/local/bin/php php.core [...] (gdb) bt #0 0x0000000000000000 in ?? () #1 0x0000000806b33b1d in __do_global_dtors_aux () from /usr/local/lib/php/20100525/hash.so #2 0x0000000806b46e25 in _fini () from /usr/local/lib/php/20100525/hash.so #3 0x00007fffffffe9f0 in ?? () #4 0x00000008007f403a in find_symdef () from /libexec/ld-elf.so.1 #5 0x00000008007f48fe in dlclose () from /libexec/ld-elf.so.1 #6 0x00000000005c522d in module_destructor () #7 0x00000000005ce4b2 in zend_hash_apply_deleter () #8 0x00000000005ce60c in zend_hash_graceful_reverse_destroy () #9 0x00000000005bdf20 in zend_shutdown () #10 0x0000000000552fd5 in php_module_shutdown () #11 0x000000000066307a in main () (gdb)