Andy Pack b96482abd3 vault backup: 2023-12-28 11:35:06

Affected files:
.obsidian/graph.json
.obsidian/workspace-mobile.json
.obsidian/workspace.json
Politcs/America/94 Crime Bill.md
Politcs/America/Black.md
Politcs/America/Presidents.md
Politcs/BLM.md
Politcs/British/Prime Ministers.md
Politcs/British/Tory.md
Politcs/Compass.md
Politcs/Fascism.md
Politcs/Labour Laws.md
Politcs/Neoliberalism/Neoliberalism.md
Politcs/Neoliberalism/Thatcher.md
Politcs/Now.md
Politcs/Socialism.md
STEM/IOT/Cyber-Physical Systems.md
STEM/IOT/Networking/Networking.md
STEM/IOT/OS/Composition.md
STEM/IOT/OS/Contiki.md
STEM/IOT/OS/OS.md
STEM/IOT/Software Services.md

2023-12-28 11:35:06 +00:00

2.7 KiB

Raw Blame History

Environment

Energy efficiency
Restricted code
- Compared to full OS

Features

Memory management
Power management
File management
Networking
Dev environment and tools
- Commands
- Interpreters
- Compilers
Entry points for sensitive resources
- Input components
Functional aspects
- Scheduling
- Multi-threading
- Interrupts
- Memory allocation

Dynamic Programming

Program parts of application after deployment
- Settings and requirements not known prior to deployment
  - Can change over time
- Bug fixes or update requirements wile in operation
- Manual updates maybe not possible
Needs boundaries between application and OS
OS receive software updates and store in active memory
- Check this is an updated version
- Install and configure new version

Paradigm

Node-centric
- Focuses on software for each node
- Operating individually
Application-centric
- Treat nodes as one application
- Requires collaboration between nodes
  - Collection
  - Dissemination
  - Analysis and/or processing of generated and collected data

Deploy to Mote

Compile
- make TARGET=xm1000 _____
Deploy
- make TARGET=xm1000 _____.upload
  - As root
Terminal
- make TARGET=xm1000 login

TinyOS

Embedded, component-based operating system and platform for low-power wireless devices, such as those used in wireless sensor networks (WSNs), smartdust, ubiquitous computing, personal area networks, building automation, and smart meters

From <https://en.wikipedia.org/wiki/TinyOS>

Written in nesC
- Network Embedded Systems C
- Component-based
  - Wired together to run applications
- Event-driven
- Extension to C
Non-blocking
- One stack
- No abstraction between OS and application
No dynamic programming
I/O ops longer than hundreds of milliseconds are async
Mainly event-based

FreeRTOS

Minimal ROM, RAM, processing overhead
Bin image 6K - 12K
3 C files
Smaller & easier real-time processing alternative
Port layer
- Architecture specific part of port
- Officially supported or contributed
Good for AWS

2.7 KiB Raw Blame History