turn into a Cargo crate

examples/register-interrupt-handler.rs

@@ -0,0 +1,36 @@
+//! Register an interrupt handler
+//!
+//! NOTE Requires a device crate generated using `svd2rust`
+
+#![feature(used)]
+#![no_std]
+
+extern crate cortex_m;
+extern crate cortex_m_rt;
+// NOTE this is the device crate
+extern crate stm32f30x;
+
+use cortex_m::asm;
+use stm32f30x::interrupt;
+
+fn main() {}
+
+// NOTE each interrupt handler has a different signature
+extern "C" fn my_interrupt_handler(_ctxt: interrupt::Tim7) {
+    asm::bkpt();
+}
+
+extern "C" fn another_interrupt_handler(_ctxt: interrupt::Exti0) {
+    asm::bkpt();
+}
+
+// Here we override only two interrupt handlers, the rest of interrupt are
+// handled by the same interrupt handler
+#[allow(dead_code)]
+#[used]
+#[link_section = ".rodata.interrupts"]
+static INTERRUPTS: interrupt::Handlers = interrupt::Handlers {
+    Tim7: my_interrupt_handler,
+    Exti0: another_interrupt_handler,
+    ..interrupt::DEFAULT_HANDLERS
+};