Adding metadata and persistent panic info

CHANGELOG.md

@@ -10,6 +10,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 * Serial terminal is available on USB for settings configurations
 * Reboot to DFU support added via the serial terminal for remote bootloading
+* The `meta` topic now contains metadata about the compiler, firmware, and hardware similar to
+Booster
+* Panic information is now persisted after reboot and available via telemetry and the USB serial
+console.
 
 ### Changed
 * Broker is no longer configured at compile time, but is maintained in device memory

Cargo.toml

@@ -17,6 +17,7 @@ documentation = "https://docs.rs/stabilizer/"
 edition = "2021"
 # keep MSRV in sync in ci.yaml and Cargo.toml
 rust-version = "1.65"
+build = "build.rs"
 exclude = [
 	".gitignore",
 	"doc/",
@@ -34,6 +35,7 @@ default-target = "thumbv7em-none-eabihf"
 members = ["ad9959", "serial-settings"]
 
 [dependencies]
+panic-persist = { version = "0.3", features = ["utf8", "custom-panic-handler"] }
 sequential-storage = "0.6"
 embedded-io = "0.6"
 embedded-storage = "0.3"
@@ -71,6 +73,10 @@ miniconf = "0.9.0"
 smoltcp-nal = { version = "0.4.1", features = ["shared-stack"]}
 bbqueue = "0.5"
 postcard = "1"
+bit_field = "0.10.2"
+
+[build-dependencies]
+built = { version = "0.7", features = ["git2"], default-features = false }
 
 [dependencies.stm32h7xx-hal]
 version = "0.15.1"
@@ -80,6 +86,7 @@ features = ["stm32h743v", "rt", "ethernet", "xspi", "usb_hs"]
 
 [patch.crates-io.usbd-serial]
 git = "https://github.com/rust-embedded-community/usbd-serial"
+rev = "096742c1c480f6f63c1a936a3c23ede7993c624d"
 
 [features]
 nightly = [ ]

build.rs

@@ -1,3 +1,5 @@
 fn main() {
+    built::write_built_file()
+        .expect("Failed to acquire build-time information");
     println!("cargo:rerun-if-changed=memory.x");
 }

memory.x

@@ -10,10 +10,16 @@ MEMORY
   RAM_B  (rwx) : ORIGIN = 0x38800000, LENGTH = 4K
   FLASH  (rx)  : ORIGIN = 0x08000000, LENGTH = 1024K
   FLASH1 (rx)  : ORIGIN = 0x08100000, LENGTH = 1024K
-  BOOTFLAG_RAM: ORIGIN = 0x2001FC00, LENGTH = 1K
+  PERSISTENT_RAM: ORIGIN = 0x2001FC00, LENGTH = 1K
 }
 
-_bootflag = ORIGIN(BOOTFLAG_RAM);
+/*
+ * Persistent memory has a u32 bootflag at the beginning and then the remainder is used for
+ * persisting panic information between boots.
+ */
+_bootflag = ORIGIN(PERSISTENT_RAM);
+_panic_dump_start = ORIGIN(PERSISTENT_RAM) + 4;
+_panic_dump_end = ORIGIN(PERSISTENT_RAM) + LENGTH(PERSISTENT_RAM) - 4;
 
 SECTIONS {
   .axisram (NOLOAD) : ALIGN(8) {

src/bin/dual-iir.rs

@@ -225,6 +225,7 @@ mod app {
             env!("CARGO_BIN_NAME"),
             &settings.broker,
             &settings.id,
+            stabilizer.metadata,
         );
 
         let generator = network.configure_streaming(StreamFormat::AdcDacData);

src/bin/lockin.rs

@@ -265,6 +265,7 @@ mod app {
             env!("CARGO_BIN_NAME"),
             &settings.broker,
             &settings.id,
+            stabilizer.metadata,
         );
 
         let generator = network.configure_streaming(StreamFormat::AdcDacData);