Cargo Features
[dependencies]
adafruit-itsy-bitsy-rp2040 = { version = "0.8.0", default-features = false, features = ["critical-section-impl", "boot2", "rt", "rp2040-e5", "rom-func-cache", "disable-intrinsics", "rom-v2-intrinsics"] }- default = boot2, critical-section-impl, rom-func-cache, rt
-
This is the set of features we enable by default
- critical-section-impl default
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critical section that is safe for multicore use
Enables critical-section-impl of rp2040-hal
- boot2 default = rp2040-boot2
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2nd stage bootloaders for rp2040
Affects
adafruit-itsy-bitsy-rp2040::BOOT2_FIRMWARE… - rt default = cortex-m-rt
-
Minimal startup / runtime for Cortex-M microcontrollers
Enables rt of rp2040-hal
- rp2040-e5
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This enables a fix for USB errata 5: USB device fails to exit RESET state on busy USB bus.
Only required for RP2040 B0 and RP2040 B1, but it doesn't hurt to enable itEnables rp2040-e5 of rp2040-hal
- rom-func-cache default
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Memoize(cache) ROM function pointers on first use to improve performance
Enables rom-func-cache of rp2040-hal
- disable-intrinsics
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Disable automatic mapping of language features (like floating point math) to ROM functions
Enables disable-intrinsics of rp2040-hal
- rom-v2-intrinsics
-
This enables ROM functions for f64 math that were not present in the earliest RP2040s
Enables rom-v2-intrinsics of rp2040-hal
Features from optional dependencies
In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.