Keep user code as-is within the module, add example

examples/resource-user-struct.rs

@@ -0,0 +1,60 @@
+//! examples/resource.rs
+
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+use cortex_m_semihosting::{debug, hprintln};
+use lm3s6965::Interrupt;
+use panic_semihosting as _;
+
+#[rtic::app(device = lm3s6965)]
+mod app {
+    #[resources]
+    struct Resources {
+        // A resource
+        #[init(0)]
+        shared: u32,
+    }
+
+    // Should not collide with the struct above
+    struct Resources2 {
+        // A resource
+        shared: u32,
+    }
+
+    #[init]
+    fn init(_: init::Context) {
+        rtic::pend(Interrupt::UART0);
+        rtic::pend(Interrupt::UART1);
+    }
+
+    // `shared` cannot be accessed from this context
+    #[idle]
+    fn idle(_cx: idle::Context) -> ! {
+        debug::exit(debug::EXIT_SUCCESS);
+
+        // error: no `resources` field in `idle::Context`
+        // _cx.resources.shared += 1;
+
+        loop {}
+    }
+
+    // `shared` can be accessed from this context
+    #[task(binds = UART0, resources = [shared])]
+    fn uart0(cx: uart0::Context) {
+        let shared: &mut u32 = cx.resources.shared;
+        *shared += 1;
+
+        hprintln!("UART0: shared = {}", shared).unwrap();
+    }
+
+    // `shared` can be accessed from this context
+    #[task(binds = UART1, resources = [shared])]
+    fn uart1(cx: uart1::Context) {
+        *cx.resources.shared += 1;
+
+        hprintln!("UART1: shared = {}", cx.resources.shared).unwrap();
+    }
+}