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TinyOS – A minimalist RTOS for Cortex-M written in C
Full TCP/IP stack with TLS 1.3 fitting in under 10KB kernel footprint.
Niche GemWizardry
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102432mo ago
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Experimental BareMetal RTOS written in Zig and C and Arm Assembly
2 starsC
Bare-metal RTOS(TamgaOs) for Cortex-M4, written in C and ARM assembly
by hrasity·Jun 29, 2026·1 point·0 comments
AI Analysis
●●SolidNiche GemWizardry
ARM assembly context switching with LDREX/STREX mutexes for Cortex-M4.
Strengths
- •PendSV-based preemptive scheduler with proper PSP per-task isolation
- •Dual Zig/C x86 implementation for comparing low-level language tradeoffs
- •Development log at auctra.app shows genuine learning journey
Weaknesses
- •Explicitly a learning project, not production-ready for actual embedded use
- •x86 port marked as discontinued, limits broader applicability
Category
Target Audience
Embedded developers, students learning OS internals
Similar To
FreeRTOS · Zephyr · ChibiOS
Post Description
Implemented so far: scheduler via PendSV, per-task PSP isolation, mutex, semaphore, MCG, SysTick, PIT timer, UART.
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