Freertos on RISC-V …And Open Source @ Amazon

FreeRTOS on RISC-V …and Open Source @ Amazon

Richard Barry Founder, FreeRTOS Project Principal Engineer, AWS IoT

The FreeRTOS Kernel Open Source at Amazon Running FreeRTOS on RISC-V

Linux 10s of K of ram 100s of K of flash μCLinux, eCOS

FreeRTOS Applicability

No Scheduler

Processor power

Application Design Goals:

• Meet real time requirements!

• Maximize responsiveness ISR • Use as little CPU/Power as possible • Maximize maintainability ISR • Maximize portability (hardware change) • Simplicity! • Fast to market • Meet requirements with minimum expenditure

ISR

Enterprise User obsession Rapid support friendly licensing Windows hosts Robustness Documentation too Knowledgeable Leadership Controlled IP support Demonstrable Paid options Vibrant activity code quality

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Downloads 4,000

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Things Cloud Sense & Act Storage & Compute

Secure local Secure device Fleet Fleet IoT data triggers, actions, connectivity onboarding, audit and analytics and and data sync and messaging management protection intelligence Endpoints and SW updates Gateway

Intelligence Insights & Logic → Action

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© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. gbm java apache (http server) cerebro alks-cli oss-attribution-generator libfabric xen devel cryptography tslint-eslint-rules cynical glib incubator mxnet jruby arrow rollbar linux (kvm) hue rgp netlink gerrit-check

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libfuse apache hive focus-android sqoop teleport webdriveragent

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bundler debugger remote appium

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boto 3 uml-utilities jawk mysql scikit-fuzzy bixie react-hot-loader ansible keras pig

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word segmentation (nvme) linux dynamodb-milkhatx wordpress

apache pig apache mvel apache ant apache nnvm nginx libmoon

logstash-input-udp apache commons lang

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moses iputils tsung ruby-simple-queue hana webhooks s3_file wingtk apache activemq jest wired tiger tupl databind jackson bencode-go multi-module-maven-release-plugin treeextra xenbits liblouis curator

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apache bigtop emrun airlift apache tomcat apache red red hat deniswernert/udev kinesalite goleveldb nginx go-statsd-client elephas bandit

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rdoc irate apache commons io parquet-python elasticsearch yield-java conda errors pkg git-bigstore linux (fbdev) pcehdo yarn hadoop apache

rebouncer boringssl exoplayer immutableassign paramz botoflow kenlm mithriljs cloud-init

ews java api graph janus papaparse haproxy

apache lucene containernetworking dynamic-object

airflow gatsby sys-proctable appium-dot-exe git-lfs macports angular tooltips angular s3fs linux kexec jose hypothesis-python behave jackson-dataformats-binary ultipart-parser appium-uiautomator2-server kubernetes dtcoretext bro

apache hbase coreos sparklingml vowpal wabbit koji bin go-winio linux (blkfront) conda-build repolinter typed definitely redux seabiosrusqlite recrud linux (arch) retool postgresql intellij-community openjml wireshark react-native jdk react-spinkit jscolor spark-redshift webkit multi-module-mave functional-streams-for-scala foolbox goics jepsen glide selenium jedis apache solr istio pydeepgp

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web socket sharp cni jgi scapy tabular diaporama packer json11 postcss-extract-animations authenticator fast align tez emscripten lmdbjava gucumber security security monkey

linux-nvme-cli t licensee lombok dovecot smack aalto-xml homebrew nodejs pygresql amphtml flink gpy wing slight.alexa

2018 cldr unicode gpyoptapache phoenix libarchive capybara jcommander tslint appium little proxy little typescript-fsa

kotlinpoet zipper moby go-git cmock

plantuml-syntax esp-open-rtos gradle kuromoji github-plugin cbmc elastalert libsoup eclipse paho mariadb-connector-j kappa

irate mysql workbench pyzmq cnn r509-ocsp-responder cocoapods cmis_5

flask-sqlalchemy devkit iot aws tensorboard

git lfs git rails fortune fortune server 389ds

quicktype appium-gulp-plugin californium

redis pkcs7pad wycheproof sockeye google guava spack xcpretty address street wing irqbalance goa

tinyxml12 open mpi pyinvestigate pysnmp openjdk miniredis graphql-java tinycorelinux kcov convolutional-pose-machines-tensorflow catwatch sync tacacs_plus plus tacacs fabric apache spark apache

libfuse apache hive focus-android sqoop teleport webdriveragent

yubico chart.js notebook s2n libc django-debug-toolbar astrum oci-fetch yarn apache joshua ex_aws mosquito llvm scipy moto

bundler debugger remote appium

yarn picker react daterange

grpc appium-chromedriver apache beam wycheproof

boto 3 uml-utilities jawk mysql scikit-fuzzy bixie react-hot-loader ansible keras pig

gulp-typescript ompi

ubuntu mshadow libgxps apache jena safe-eval FreeRTOS

word segmentation (nvme) linux dynamodb-milkhatx wordpress

apache pig apache mvel apache ant apache nnvm nginx libmoon

logstash-input-udp apache commons lang

openfire gsettings-test eslint open quantum safe dpdk immutables.org ffmpeg netty

apache zeppelin rigor gtk+

allure mqtt js

apache bigtop emrun airlift apache tomcat apache red red hat deniswernert/udev kinesalite goleveldb nginx go-statsd-client elephas bandit

iu (xendrivers) linux lombok

rdoc irate apache commons io parquet-python elasticsearch yield-java conda errors pkg git-bigstore linux (fbdev) pcehdo yarn hadoop apache

rebouncer boringssl exoplayer immutableassign paramz botoflow kenlm mithriljs cloud-init

ews java api graph janus papaparse haproxy

apache lucene containernetworking dynamic-object

spring framework apache incubator airflow graphql-go p5-protocol-http2 deep visualization toolbox gdk-pixbuf mxnet notebooks react-draft-wysiwyg

Blocked Task 2

Top of Stack for Task Running Task StackBlocked Variable Task 1 Stack Variable Top of Stack for Task Top of Stack for Task Return Address Stack Variable StackReady Variable Task 1 Program Counter Program Counter Copy Stack Variable Stack Variable StatusTop Register of Stack for Task Stack Pointer Return Address Return Address R0 CopyStack Variable Empty Stack Space Program Counter Copy R0 R1 CopyStack Variable Empty Stack Space Status Register …Return Address R1 Empty Stack Space R0 Copy Empty Stack Space RnProgram Copy Counter Copy … R1 Copy Empty StackStatus Space Register Empty Stack Space … Rn R0 Copy Empty Stack Space Empty StackRn CopySpace Empty Stack Space R1 Copy Empty Stack Space Empty Stack Space … Empty Stack Space Rn Copy Empty Stack Space Empty Stack Space

• Including the source files • Setting the assembler’s include file • Set configCLINT_BASE_ADDRESS • #define portasmHANDLE_INTERRUPT • Install the FreeRTOS trap hander

Task 3 Task 3 Top ofTask Stack 2 Max Task Max Task Task 2 for Task Stack Stack Top ofTask Stack 1 Top ofTask Stack 1 MaxforTop Task Task of Stack MaxforTop Task Task of Stack Stack StackMaxfor Task Task Maxfor Task Task Stack Stack Max Task Max IRQ Stack Max Task Stack Stack mptyMax Stack IRQ Stack Space Max Task Stack Max IRQ Stack Max Task Max IRQ Stack Stack

Max IRQ Stack Max Task Max IRQ Stack Stack

Max Task Stack Max IRQ Stack

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