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not_the_fda

Embedded is a PIA, its not web development and shouldn't be treated as such.

Printf isn't re-entrant, and they are calling it from multiple threads.

There are solutions with trade offs: https://interrupt.memfault.com/blog/printf-on-embedded

Everything in embedded is a tradeoff of space, performance, or cost.

If you come at it as web development with IO you are going to have a very bad time.

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> Printf isn't re-entrant, and they are calling it from multiple threads.

This! Simple schedulers generally only allow system calls (such as printf) from the main thread. If you really want to 'print' from a child thread then send a message to the main thread, asking that it prints the message contents on on behalf of the child thread.

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