start converting advanced apps

advanced/firmware/.cargo/config.toml

@@ -2,6 +2,7 @@
 # (..)
 rustflags = [
   "-C", "linker=flip-link", # adds stack overflow protection
+  "-C", "link-arg=-Tdefmt.x", # defmt support
   # (..)
 ]
 

advanced/firmware/Cargo.toml

@@ -17,15 +17,16 @@ cortex-m-rt = "0.6.13"
 cortex-m-rtic = "0.5.1"
 dk = { path = "../../boards/dk", features = ["advanced"] }
 heapless = "0.5.5"
-log = "0.4.8"
-panic-log = { path = "../../common/panic-log" }
+panic-probe = { version = "0.2.0", features = ["print-defmt"] }
+defmt = "0.2.0"
+defmt-rtt = "0.2.0"
 usb = { path = "../common/usb" }
 usb2 = "0.0.1"
 
 # optimize code in both profiles
 [profile.dev]
 codegen-units = 1
-debug = 1
+debug = 2
 debug-assertions = true # !
 incremental = false
 lto = "fat"
@@ -40,3 +41,18 @@ incremental = false
 lto = "fat"
 opt-level = 3
 overflow-checks = false
+
+[features]
+ # set defmt logging levels here
+ default = [
+   "defmt-default",
+   # "dependency-a/defmt-trace",
+ ]
+
+ # do NOT modify these features
+ defmt-default = []
+ defmt-trace = []
+ defmt-debug = []
+ defmt-info = []
+ defmt-warn = []
+ defmt-error = []

advanced/firmware/src/bin/events.rs

@@ -2,7 +2,8 @@
 #![no_std]
 
 use cortex_m::asm;
-use panic_log as _; // panic handler
+// this imports `beginner/apps/lib.rs` to retrieve our global logger + panicking-behavior
+use firmware as _;
 
 #[rtic::app(device = dk)]
 const APP: () = {
@@ -22,7 +23,7 @@ const APP: () = {
             w.usbdetected().set_bit()
         });
 
-        log::info!("USBDETECTED interrupt enabled");
+        defmt::info!("USBDETECTED interrupt enabled");
 
         // read the whole 32-bit usb supply register
         // the `read()` method returns a reader which can then be used to access the register content
@@ -30,19 +31,19 @@ const APP: () = {
         // (the layout of the USBREGSTATUS register can be found in section 5.3.7.13 of the PS)
         let regstatus: u32 = power.usbregstatus.read().bits();
         //                                             ^^^^ complete register content
-        log::info!("USBREGSTATUS: {:b}", regstatus);
+        defmt::info!("USBREGSTATUS: {:b}", regstatus);
 
         // read the 1-bit VBUSDETECT field that is part of the USBREGSTATUS register content
         // to show that its contents reflect our usb connection status
         // (the USBDETECTED event that will trigger `on_power_event()` is derived from this information)
         let vbusdetect: bool = power.usbregstatus.read().vbusdetect().bits();
         //                                               ^^^^^^^^^^ bitfield name
-        log::info!("USBREGSTATUS.VBUSDETECT: {}", vbusdetect);
+        defmt::info!("USBREGSTATUS.VBUSDETECT: {}", vbusdetect);
     }
 
     #[idle]
     fn main(_cx: main::Context) -> ! {
-        log::info!("idle: going to sleep");
+        defmt::info!("idle: going to sleep");
 
         // sleep in the background
         loop {
@@ -52,7 +53,7 @@ const APP: () = {
 
     #[task(binds = POWER_CLOCK)]
     fn on_power_event(_cx: on_power_event::Context) {
-        log::info!("POWER event occurred");
+        defmt::info!("POWER event occurred");
         dk::exit()
     }
 };

advanced/firmware/src/bin/hello.rs

@@ -3,14 +3,15 @@
 
 use cortex_m::asm;
 use cortex_m_rt::entry;
-use panic_log as _; // panic handler
+// this imports `beginner/apps/lib.rs` to retrieve our global logger + panicking-behavior
+use firmware as _;
 
 #[entry]
 fn main() -> ! {
     // board initialization
     dk::init().unwrap();
 
-    log::info!("Hello, world!");
+    defmt::info!("Hello, world!");
 
     loop {
         asm::bkpt();

advanced/firmware/src/bin/resource-solution.rs

@@ -3,7 +3,8 @@
 
 use cortex_m::asm;
 use dk::peripheral::POWER;
-use panic_log as _; // panic handler
+// this imports `beginner/apps/lib.rs` to retrieve our global logger + panicking-behavior
+use firmware as _;
 
 #[rtic::app(device = dk)]
 const APP: () = {
@@ -20,7 +21,7 @@ const APP: () = {
 
         power.intenset.write(|w| w.usbdetected().set_bit());
 
-        log::info!("USBDETECTED interrupt enabled");
+        defmt::info!("USBDETECTED interrupt enabled");
 
         init::LateResources {
             power,
@@ -31,23 +32,23 @@ const APP: () = {
     #[idle]
     fn main(_cx: main::Context) -> ! {
         loop {
-            log::info!("idle: going to sleep");
+            defmt::info!("idle: going to sleep");
             asm::wfi();
-            log::info!("idle: woke up");
+            defmt::info!("idle: woke up");
         }
     }
 
     #[task(binds = POWER_CLOCK, resources = [power, counter])]
     //                                              ^^^^^^^ we want to access the resource from here
     fn on_power_event(cx: on_power_event::Context) {
-        log::debug!("POWER event occurred");
+        defmt::debug!("POWER event occurred");
 
         let power = cx.resources.power;
         let counter = cx.resources.counter;
 
         *counter += 1;
         let n = *counter;
-        log::info!(
+        defmt::info!(
             "on_power_event: cable connected {} time{}",
             n,
             if n != 1 { "s" } else { "" }

advanced/firmware/src/bin/resource.rs

@@ -3,7 +3,8 @@
 
 use cortex_m::asm;
 use dk::peripheral::POWER;
-use panic_log as _; // panic handler
+// this imports `beginner/apps/lib.rs` to retrieve our global logger + panicking-behavior
+use firmware as _;
 
 #[rtic::app(device = dk)]
 const APP: () = {
@@ -19,7 +20,7 @@ const APP: () = {
 
         power.intenset.write(|w| w.usbdetected().set_bit());
 
-        log::info!("USBDETECTED interrupt enabled");
+        defmt::info!("USBDETECTED interrupt enabled");
 
         init::LateResources {
             power, // <- resource initialization
@@ -29,16 +30,16 @@ const APP: () = {
     #[idle]
     fn main(_cx: main::Context) -> ! {
         loop {
-            log::info!("idle: going to sleep");
+            defmt::info!("idle: going to sleep");
             asm::wfi();
-            log::info!("idle: woke up");
+            defmt::info!("idle: woke up");
         }
     }
 
     #[task(binds = POWER_CLOCK, resources = [power])]
     //                                      ^^^^^^^ resource access list
     fn on_power_event(cx: on_power_event::Context) {
-        log::info!("POWER event occurred");
+        defmt::info!("POWER event occurred");
 
         // resources available to this task
         let resources = cx.resources;

advanced/firmware/src/bin/rtic-hello.rs

@@ -2,7 +2,8 @@
 #![no_std]
 
 use cortex_m::asm;
-use panic_log as _; // panic handler
+// this imports `beginner/apps/lib.rs` to retrieve our global logger + panicking-behavior
+use firmware as _;
 
 #[rtic::app(device = dk)]
 const APP: () = {
@@ -10,12 +11,12 @@ const APP: () = {
     fn init(_cx: init::Context) {
         dk::init().unwrap();
 
-        log::info!("Hello");
+        defmt::info!("Hello");
     }
 
     #[idle]
     fn main(_cx: main::Context) -> ! {
-        log::info!("world!");
+        defmt::info!("world!");
 
         loop {
             asm::bkpt();

advanced/firmware/src/lib.rs

@@ -0,0 +1,17 @@
+#![no_std]
+
+use panic_probe as _;
+
+// same panicking *behavior* as `panic-probe` but doesn't print a panic message
+// this prevents the panic message being printed *twice* when `defmt::panic` is invoked
+#[defmt::panic_handler]
+fn panic() -> ! {
+    cortex_m::asm::udf()
+}
+
+/// Terminates the application and makes `probe-run` exit with exit-code = 0
+pub fn exit() -> ! {
+    loop {
+        cortex_m::asm::bkpt();
+    }
+}