C++ framework for writing applications based on Espressif's ESP-IDF.
Smooth provides a set of classes that makes life as a developer easier compared to working directly with ESP-IDF & FreeRTOS APIs. An application built with Smooth is entirely event driven and thread-safe*. Smooth utilizes the power of FreeRTOS, but hides all the complexities from the application programmer.
Traditionally, embedded systems require a fully static memory footprint after start-up. Smooth takes a somewhat more pragmatic view on this; it utilizes the standard library (which is not memory static) to provide cleaner code, at the cost of some extra used bytes of RAM. However, where it is appropriate, such as with the Queue, things are designed so that the result is a memory static instance, i.e. a smooth::ipc::Queue will not behave like an std::vector.
Apart from hardware/IDF-specific classes, applications written using Smooth can be compiled and run on POSIX systems (e.g. Linux) without any special considerations.
*) To certain limits, of course.
- Application initialization
- Wifi configuration / control
- Tasks
- Queues with support for proper C++ objects, not just plain data structures
- Timer Events
- Event-driven TCP Sockets, including TLS support and server sockets.
- System events
- Output
- Input
- Input with interrupt to event translation
- I2C Master Device class
- Flash and SDCard initialization.
- HTTP(s) Server (please enable PSRAM (
make menuconfig) when using TLS; it uses ~23kb per connection, also make sure mbedTLS is configured to use PSRAM.) - MQTT Client
- Sensor BME280
- 16 channel I/O expander MCP23017
- RGB LED, i.e. WS2812(B), SK6812, WS2813, (a.k.a NeoPixel).
In your ESP-IDF projects's root folder, type the following to add smooth as a submodule.
git submodule add https://github.com/PerMalmberg/Smooth.git components/smoothPlease see the the different test projects under the test folder. When compiling these, open the root of the repo as a CMake project.