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Be more clear about the esp-alloc feature in esp-wifi's migration guide (#2165)

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Björn Quentin 2024-09-16 13:21:11 +02:00 committed by GitHub
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esp-wifi/MIGRATING-0.9.md
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@ -40,7 +40,7 @@ You no longer have to set up clocks and pass them to `esp_wifi::initialize`.
## Memory allocation
You now need to have a global allocator provided by `esp-alloc` providing allocations from internal memory
By default the `esp-alloc` feature is enabled which means you need to have a global allocator provided by `esp-alloc` allowing allocations from internal memory
```diff
#![no_std]
@ -65,6 +65,9 @@ The size of the heap depends on what you are going to use esp-wifi for and if yo
E.g. when using `coex` you need around 92k. If not using `coex`, going lower than 72k you will observe some failed allocations but it might still work. Going even lower will make things fail.
If you see linker errors regarding undefined symbols for `esp_wifi_free_internal_heap` and `esp_wifi_allocate_from_internal_ram` you either want to opt-in to use the `esp-alloc` feature
or provide your own allocator (see below)
### Using your own allocator
You can also use your own allocator instead of using `esp-alloc`. To do that you need to opt-out of the default feature `esp-alloc` and provide two functions: