Add boilerplate stuff

.cargo/config

@@ -0,0 +1,2 @@
+[build]
+target = "thumbv6m-none-eabi"

.gitignore

@@ -1 +1,2 @@
-/target
+target/
+Cargo.lock

Cargo.toml

@@ -6,3 +6,5 @@ edition = "2018"
 readme = "README.md"
 
 [dependencies]
+cortex-m-rt = "0.6.13"
+panic-halt = "0.2.0"

build.rs

@@ -0,0 +1,15 @@
+use std::env;
+use std::fs;
+use std::io::Write;
+use std::path::PathBuf;
+
+fn main() {
+    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
+    fs::File::create(out_dir.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+
+    println!("cargo:rustc-link-search={}", out_dir.display());
+    println!("cargo:rerun-if-changed=memory.x");
+}

memory.x

@@ -0,0 +1,6 @@
+/* STM32F072CxT6 */
+MEMORY
+{
+  FLASH : ORIGIN = 0x08000000, LENGTH =  64K /* change length to 128K for STM32F072CBT6 */
+  RAM   : ORIGIN = 0x20000000, LENGTH =  16K
+}

src/main.rs

@@ -0,0 +1,28 @@
+/*
+ * any key firmware
+ * Copyright (C) 2020  Luca Schmid
+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#![no_std]
+#![no_main]
+
+use cortex_m_rt::entry;
+use panic_halt as _;
+
+#[entry]
+fn main() -> ! {
+    loop {}
+}