Add config for VSCode rust-analyzer

.gitignore

@@ -2,6 +2,3 @@
 **/*.orig
 **/*.rs.bk
 Cargo.lock
-
-# VS Code
-/.vscode

.vscode/settings.json

@@ -0,0 +1,18 @@
+{
+    "rust.all_targets": false,
+    "rust.target": "thumbv7em-none-eabihf",
+    "rust.all_features": false,
+    "rust.features": [
+      "rtic",
+      "stm32f767"
+    ],
+    "rust-analyzer.checkOnSave.allTargets": false,
+    "rust-analyzer.checkOnSave.extraArgs": [
+        "--target",
+        "thumbv7em-none-eabihf"
+    ],
+    "rust-analyzer.cargo.features": [
+      "rtic",
+      "stm32f767"
+    ]
+}

README.md

@@ -55,6 +55,10 @@ features = ["stm32f767", "rt"]
 
 The documentation can be found at [docs.rs/stm32f7xx-hal](https://docs.rs/stm32f7xx-hal/).
 
+## VSCode
+
+Default settings for `rust-analyzer` are set in [.vscode/settings.json](.vscode/settings.json) for `stm32f767`. If you're working on another chip, you can change the target there for convenience, but don't commit your change to this file.
+
 ## License
 
 Licensed under either of