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Merge pull request #3790 from bugadani/faq

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Add __pender error to the FAQ
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Dario Nieuwenhuis 2025-01-21 21:50:12 +00:00 committed by GitHub
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@ -117,6 +117,20 @@ If you are in the early project setup phase and not using anything from the HAL,
use embassy_stm32 as _; use embassy_stm32 as _;
---- ----
Another common error you may experience is:
[source,text]
----
= note: rust-lld: error: undefined symbol: __pender
>>> referenced by mod.rs:373 (src/raw/mod.rs:373)
>>> embassy_executor-e78174e249bca7f4.embassy_executor.1e9d60fc90940543-cgu.0.rcgu.o:(embassy_executor::raw::Pender::pend::h0f19b6e01762e4cd) in archive [...]libembassy_executor-e78174e249bca7f4.rlib
----
There are two possible causes to this error:
* You are using `embassy-executor` withuout enabling one of the architecture-specific features, but you are using a HAL that does not bring its own executors. For example, for Cortex-M (like the RP2040), you need to enable the `arch-cortex-m` feature of `embassy-executor`.
* You are not using `embassy-executor`. In this case, you need to enable the one of the `generic-queue-X` features of `embassy-time`.
== Error: `Only one package in the dependency graph may specify the same links value.` == Error: `Only one package in the dependency graph may specify the same links value.`
You have multiple versions of the same crate in your dependency tree. This means that some of your You have multiple versions of the same crate in your dependency tree. This means that some of your