QuarkTS
picoRTOS
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QuarkTS
picoRTOS
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What value is loaded into LR on return from the exception handler on tm4c
Here’s an example for Cortex M3 : https://github.com/jnaulet/picoRTOS/blob/v1.4.x/arch/arm/cm3/picoRTOS_portasm.S
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picoRTOS v1.4.2 is out ! Check it out on GitHub : https://github.com/jnaulet/picoRTOS
For mobile users: https://github.com/jnaulet/picortos
What are some alternatives?
rt-thread - RT-Thread is an open source IoT real-time operating system (RTOS).
simde - Implementations of SIMD instruction sets for systems which don't natively support them.
atomicx - Pure C++ non stack displacement that implements cooperative multitask library for SINGLE CORE embedded development on DSPs, Microcontrollers and Processor (ARV, RISCV, ARM(all), TENSY, ESP), while also suitable for applications on Windows, Linux and MacOs and compatible with some RTOSs as well. This library allows full event driven applications while uses SMARTs LOCKS and WAIT/NOTIFY locks to also transport messages, MESSAGE BROKER is also provided (Those uses Message type size_t message and size_t tags, where tag will give meaning to the message). That implementation also introduce thread safe QUEUE (full object) and smart_ptr (to allow better implementation on minimal environment)
freertos-teensy - FreeRTOS port with C++ std::thread support for ARM boards Teensy 3.5, 3.6, 4.0 and 4.1 (cortex-m4f and cortex-m7f)
qpc - QP/C Real-Time Embedded Framework/RTOS for embedded systems based on active objects (actors) and hierarchical state machines
MiROS - MiROS (Minimal Real-Time Operating System) for ARM Cortex-M
arduino-pico - Raspberry Pi Pico Arduino core, for all RP2040 boards
modern-embedded-programming-course - Companion repository to the "Modern Embedded Systems Programming" video course.
Unicorn Engine - Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc, PowerPC, RiscV, S390x, TriCore, X86)
stm32f429 - Keil projects and libraries for STM32F4xx devices
capstone - Capstone disassembly/disassembler framework: Core (Arm, Arm64, BPF, EVM, M68K, M680X, MOS65xx, Mips, PPC, RISCV, Sparc, SystemZ, TMS320C64x, Web Assembly, X86, X86_64, XCore) + bindings. [Moved to: https://github.com/capstone-engine/capstone]