21st Mar 2022

Dynamic embedded memory management part 2

As a follow-up to the previous article, here are some tips to determine the use of the heap by your program.

In C

In C, it is quite difficult to estimate heap usage because the allocator functions are type-erased, i.e. the return type of the allo...

1st Jul 2021

Cycle precise delay loop in C++

Implementing a cycle-precise delay loop in C++ for embedded system

In a recent work on Marlin's printer firmware, I found a pending pull request about waiting for precise, ideally nanosecond timed, delays.

While it looked like easy at first, the implementation proved tricky. This post explains...

algorithm c++ embedded Marlin

13th Jul 2023

Technical review for minimization of resources in eMQTT5

eMQTT5 is a MQTT v5.0 client that's targetting low resource usage for embedded system.

In order to achieve this goal, we've used many tricks and technics that we'll present below.

No heap allocation

On a 4GB computer, allocating mem...

Software MQTT c++

18th Mar 2022

Dynamic embedded memory management

When you have an embedded system with limited memory, you are forced to think twice about how you are going to spend your budget. The most obvious solution is to avoid dynamic memory allocation and deal with static pool of memory you are managing yourself compl...