Licensed under GPL v3
Branches:
master 
THIS CODE BASE IS NO LONGER MAINTAINED. SOME OF ITS FUNCTIONALITY HAS MIGRATED TO https://github.com/malachi-iot/estdlib
Comprises reusable low-level functionality for use in your embedded and/or cross-platform endeavors.
Code is Arduino, POSIX and mbed OS friendly. Experimental support for ESP-OPEN-RTOS. Plays nice with PlatformIO
- C++ iostream shims; use istream/ostream etc. without all the bloat
- Circular buffer
- Debug console: Menuing system for serial port (or other stream) control code to run diagnostics and acquire status
- Telnet capable (coming soon)
- Linked lists, single and doubly linked
Note Circular Buffer and its close relatives conform to the layer1-layer5 design as described later. This could be critical for your small-footprint environment.
Following code has worked to varying degrees but has not been tested for a while. Code in this category is more subject to breaking changes:
- C#-like event code
- Service objects facilitating start, stop and status querying
- Canned MQTT Service for use with Adafruit's MQTT libraries (must define either MQTT_TYPE_WIFI or MQTT_TYPE_FONA). Hard wired to either WiFi or FONA at this time
- Canned Wifi Service for use with ESP8266 (must define MQTT_TYPE_WIFI)
- Abstract driver layer (work in progress):
- GNSS (GPS)
- Hardware helper layer - strong effort put to be HAL-like, but no promises =)
- AVR
- power management
- sleep
- watchdog
- pin change interrupts
- SAM
- sleep (coming soon)
- AVR
Following code worked at once time, but is now being put out to pasture. If you seee it, don't use it:
- Cross-thread RPC mechanism (if using an external threading tool)
- FEATURE_IOSTREAM: configures POSIX iostreams to take precedence over our lightweight libs
- layer 1: barest-metal, tends to be templates; buffer pointers avoided
- layer 2: low-level. buffer pointers often used. size fields are templatized constants
- layer 3: low-level. buffer pointers and size fields used
- layer 4: mid-level. buffers inline (pointers avoided). virtual functions allowed
- layer 4 is currently experimental and subject to change definition.
- layer 5: mid-level. buffer pointers used. virtual functions allowed
Tested and works on the following:
| Device | Framework | Features |
|---|---|---|
| ATmega328P | Arduino | |
| ATmega32u4 | Arduino | IOS, buffer |
| ATtiny85 | Arduino | |
| ESP8266 | Arduino | |
| ESP8266 | ESP-OPEN-RTOS | |
| ATSAMD21G | Arduino | IOS |
| ATSAMD21G | mbed OS | |
| STM32F401RE | mbed OS | IOS |
| x86 | POSIX | IOS |
Most code in this lib is designed to work everywhere, so missing features on this chart only represents that it is untested , not necessarily unavailable.
I won't lie, these libraries take space. There are a slew of #defines to help curb its appetite:
- MEMORY_OPT: Trim memory by reducing internal buffers sizes and string descriptions
- MEMORY_OPT_CODE: Trim code space by reducing size of string descriptions, some debug/bounds code, and a few potentially less critical features
- MEMORY_OPT_DATA: Trim data space by reducing various buffer sizes
- CONSOLE_FEATURE_FULL: Enable all options for Console (enabled by default when MEMORY_OPT_CODE is not enabled)
- CONSOLE_FEATURE_AUTOCOMPLETE_COMMAND: Enable 'tab' key to auto-complete a menu name in console mode
- CONSOLE_FEATURE_COUT: Presently disabled by default, this switches Console code from global singular-stream to Console managing its own private stream; useful for multiple consoles speaking over different streams (i.e. Serial and telnet)
- DRIVER_FEATURE_VTABLE_SUPPRESS: Disables virtual tables/polymorphism for drivers
- EVENT_FEATURE_TYPE2: Force events to never operate in Type1 mode, only Type2.
May save code space if using events heavily.
Remember, istream/ostream are (arguably) by design blocking I/O. There is a lot of discussion about this on the internet. So far I have done nothing to adjust or enhance the FEATURE_IOSTREAM_SHIM to be async.