RTOS

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Revision as of 04:32, 28 July 2021 by Ted (talk | contribs) (Zephyr demo supported boards: adding Zephyr SDK sample blinky project build error message.)
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Unix and Linux config :: Containers :: Clusters :: <link>


2021-02-02 Tuesday

Real Time Operating System references . . .

^ ChibiOS

A brief history of ChibiOS development:

How to create static threads and dynamic threads, in ChibiOS:

How to choose thread's working area or memory size:


^ ChibiOS ports

This section dedicated to references and notes on ChibiOS ports to processors outside of the immediate, STM32xxx families of parts.

Adding this Nordicsemi Devzone article link regarding ChibiOS port to nRF9160 System In Package:

^ Zephyr RTOS

Introduction to Zephyr and some guides . . .

Example code . . .

A tutorial for setting up support and build environment for Zephyr, and for flashing and testing on yet undetermined targets:

Zephyr demo supported boards


YAML data serialization language

There appears to be an important high-level tool called west which Zephyr developers and community use. It's also mentioned as the build tool for one or more of Nordic Semiconductor's nRF9160 example projects. A link to the github west documentation is,


The west project top level Github URL:


^ To configure Zephyr SDK

2021-07-27 Tuesday While configuring Zephyr SDK for Linux command line builds having trouble with basic build after following Nordic Semi 'Getting Started' instructions. Meta-tool west complains "not able to find toolchain.":

ted@localhost:~/zephyrproject/zephyr$ west build -b nrf9160dk_nrf9160@1.0.0 ./samples/basic/blinky
-- west build: generating a build system
Including boilerplate (Zephyr base (cached)): /home/ted/zephyrproject/zephyr/cmake/app/boilerplate.cmake
-- Application: /home/ted/zephyrproject/zephyr/samples/basic/blinky
-- Zephyr version: 2.6.99 (/home/ted/zephyrproject/zephyr), build: zephyr-v2.6.0-1460-g17d2e9d084b2
-- Found west (found suitable version "0.11.0", minimum required is "0.7.1")
-- Board: nrf9160dk_nrf9160, Revision: 1.0.0 (Active: 0.14.0)
-- Cache files will be written to: /home/ted/.cache/zephyr
-- Using toolchain: zephyr 0.12.4 (/opt/zephyr-sdk-0.12.4)
-- Found dtc: /usr/bin/dtc (found suitable version "1.5.0", minimum required is "1.4.6")
-- Found toolchain: cross-compile (arm-unknown-linux-gnueabi-)
CMake Error at /home/ted/zephyrproject/zephyr/cmake/compiler/gcc/generic.cmake:8 (message):
  Zephyr was unable to find the toolchain.  Is the environment misconfigured?

  User-configuration:

  ZEPHYR_TOOLCHAIN_VARIANT: cross-compile

  Internal variables:

  CROSS_COMPILE: arm-unknown-linux-gnueabi-

  TOOLCHAIN_HOME:

Call Stack (most recent call first):
  /home/ted/zephyrproject/zephyr/cmake/generic_toolchain.cmake:42 (include)
  /home/ted/zephyrproject/zephyr/cmake/app/boilerplate.cmake:570 (include)
  /home/ted/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:24 (include)
  /home/ted/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:40 (include_boilerplate)
  CMakeLists.txt:4 (find_package)


-- Configuring incomplete, errors occurred!
FATAL ERROR: command exited with status 1: /usr/bin/cmake -DWEST_PYTHON=/usr/bin/python3 -B/home/ted/zephyrproject/zephyr/build -S/home/ted/zephyrproject/zephyr/samples/basic/blinky -GNinja

Questions: (1) what is in this file: /home/ted/zephyrproject/zephyr/cmake/compiler/gcc/generic.cmake? (2) where originates this string pattern: arm-unknown-linux-gnueabi-


^ General RTOS Considerations