Update dependencies in microbit/src/03-setup

microbit/src/03-setup/Cargo.toml

@@ -2,10 +2,10 @@
 name = "rtt-check"
 version = "0.1.0"
 authors = ["Henrik Böving <hargonix@gmail.com>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
-cortex-m = "0.7.3"
-cortex-m-rt = "0.7.0"
-rtt-target = { version =  "0.3.1", features = ["cortex-m"] }
-panic-rtt-target = { version =  "0.1.2", features = ["cortex-m"] }
+cortex-m = { version = "0.7.7", features = ["critical-section-single-core"] }
+cortex-m-rt = "0.7.3"
+rtt-target = "0.5.0"
+panic-rtt-target = "0.1.3"

microbit/src/03-setup/IDE.md

@@ -13,7 +13,7 @@ Some IDEs fail to understand the code, because they fail to determine whether a
 is defined in the microbit or microbit-v2 codebase. If you fail to get auto-completion to work,
 you may want to try to edit the `Cargo.toml` files you encounter through this book, and remove
 all references to the version of microbit you are not using. That is:
- in the `Cargo.toml` file you must remove the dependency and features you do not use (the part guarded by `#[cfg(feature = "vI")]` and the guard itself)
+ in the `Cargo.toml` file you must remove the dependency and features you do not use (the part guarded by `#[cfg(feature = "v1")]` and the guard itself)
 
 # IDE configuration
 

microbit/src/03-setup/src/main.rs

@@ -4,6 +4,7 @@
 use panic_rtt_target as _;
 use rtt_target::{rtt_init_print, rprintln};
 
+use cortex_m as _;
 use cortex_m_rt::entry;
 
 #[entry]