Pthread.h on ATmega32 micrcontroller

  • Thread starter Thread starter Etude
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SUMMARY

Using threads on the Atmel ATmega32 microcontroller is not feasible due to its single CPU architecture. The absence of the pthread.h library in avr-gcc confirms that traditional threading is unsupported. To achieve multi-threading capabilities, developers must implement or utilize a real-time operating system (RTOS) such as BRTOS, which is available under the MIT license. This approach allows for simulated threading through task management and interrupts.

PREREQUISITES
  • Understanding of embedded C programming
  • Familiarity with the Atmel ATmega32 microcontroller architecture
  • Knowledge of real-time operating systems (RTOS)
  • Experience with avr-gcc toolchain for AVR microcontrollers
NEXT STEPS
  • Research BRTOS and its implementation on the ATmega32
  • Learn about task scheduling and interrupt handling in embedded systems
  • Explore alternatives to threading in embedded C programming
  • Investigate other RTOS options compatible with AVR microcontrollers
USEFUL FOR

Embedded systems developers, hobbyists programming the ATmega32, and anyone interested in implementing multi-threading in microcontroller applications.

Etude
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Ok This might be really stupid but I have been finding conflicting answers and getting very confused.

I am trying to program an Atmel ATmega32 using embedded C. This is my first time and I wanted to know if I can use threads in the programming.

Thanx!
 
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IIRC, most microcontrollers don't do threading. You can simulate it using interrupts, I believe.

Quick test of avr-gcc:
Code: 
me@linuxbox:~$ avr-gcc test.c
test.c:1:21: error: pthread.h: No such file or directory
 
Looking at atmel's documentation, it's a single cpu. If you want to do multi-threading you'll need to write or obtain a multi-threading operating system for the atmega328. The only operating system for the atmega328 I see in this wiki article is BRTOS, which is apparently free (MIT license).

http://en.wikipedia.org/wiki/List_of_real-time_operating_systems

link to brtos from wiki article:

http://code.google.com/p/brtos/

It's also possible that your atmega328 came with software that included a multi-threading operating system.
 
Last edited:

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