sombie: combining OMB + sfy for a super-cheap global buoy

sfy-buoy/Cargo.toml

@@ -10,7 +10,7 @@ path = "src/bin/sfypack.rs"
 required-features = [ "build-bin", "raw" ]
 
 [workspace]
-members = [ "target-test", "sfy-artemis", "sfy-ext-gps" ]
+members = [ "target-test", "sfy-artemis", "sfy-ext-gps", "sombie" ]
 
 [dependencies]
 base64 = { version = "0.13.0", default-features = false }
@@ -59,7 +59,8 @@ fir = []
 storage = []
 ext-gps = [ "dep:serde-json-core"]
 spectrum = [ "dep:microfft", "dep:num-complex" ]
-ntn-test = [ "spectrum" ]
+ntn = []
+ntn-test = [ "ntn" ]
 surf = []
 ice = []
 testing = [ "defmt/unstable-test" ]

sfy-buoy/sfy-artemis/Cargo.toml

@@ -47,5 +47,5 @@ ice = [ "sfy/ice" ]
 deploy = []
 defmt-serial = [ "dep:ufmt", "dep:defmt-serial" ]
 host-tests = []
-spectrum = [ "sfy/spectrum" ]
+spectrum = [ "sfy/spectrum", "sfy/ntn" ]
 ntn-test = [ "sfy/ntn-test" ]

sfy-buoy/sombie/Cargo.toml

@@ -0,0 +1,46 @@
+cargo-features = [ "per-package-target" ]
+
+[package]
+name = "sombie"
+version = "0.1.0"
+edition = "2024"
+authors = [ "Gaute Hope <gauteh@met.no>" ]
+resolver = "2"
+forced-target = "thumbv7em-none-eabihf"
+
+
+[dependencies]
+heapless = { version = "0.7", features = [ "serde", "ufmt-impl", "defmt-impl" ] }
+cortex-m = { version = "0.7", features = ["critical-section-single-core"]}
+cortex-m-rt = "0.7"
+embedded-hal = "0.2.6"
+defmt = "0.3"
+defmt-rtt = "0.4"
+panic-probe = { version = "0.3.0", features = ["print-defmt"] }
+cmsis_dsp = { version = "0.1.0", features = [ "micromath" ] }
+sfy = { path = "../", default-features = false, features = [ "spectrum", "fir"] }
+git-version = "0.3.5"
+chrono = { version = "0.4.19", default-features = false }
+defmt-serial = { version = "0.8.0", optional = true }
+ufmt = { version = "0.1.0", optional = true }
+static_cell = "2.0.0"
+
+[dependencies.ambiq-hal]
+version = "0.3"
+features = ["ambiq-sdk", "sparkfun-redboard-nano", "rt"]
+git = "https://github.com/gauteh/ambiq-rs"
+
+[dev-dependencies]
+
+
+[features]
+default = [ "deploy", ]
+20Hz = [ "sfy/20Hz" ]
+10Hz = [ "sfy/10Hz" ]
+storage = [ "sfy/storage" ]
+surf = [ "sfy/surf" ]
+ice = [ "sfy/ice" ]
+deploy = []
+defmt-serial = [ "dep:ufmt", "dep:defmt-serial" ]
+host-tests = []
+ntn-test = [ "sfy/ntn-test" ]

sfy-buoy/sombie/build.rs

@@ -0,0 +1,31 @@
+//! This build script copies the `memory.x` file from the crate root into
+//! a directory where the linker can always find it at build time.
+//! For many projects this is optional, as the linker always searches the
+//! project root directory -- wherever `Cargo.toml` is. However, if you
+//! are using a workspace or have a more complicated build setup, this
+//! build script becomes required. Additionally, by requesting that
+//! Cargo re-run the build script whenever `memory.x` is changed,
+//! updating `memory.x` ensures a rebuild of the application with the
+//! new memory settings.
+
+use std::env;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+
+fn main() {
+    // Put `memory.x` in our output directory and ensure it's
+    // on the linker search path.
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+    println!("cargo:rustc-link-search={}", out.display());
+
+    // By default, Cargo will re-run a build script whenever
+    // any file in the project changes. By specifying `memory.x`
+    // here, we ensure the build script is only re-run when
+    // `memory.x` is changed.
+    println!("cargo:rerun-if-changed=memory.x");
+}

sfy-buoy/sombie/memory.x

@@ -0,0 +1,7 @@
+ENTRY(Reset_Handler)
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00010000, LENGTH = (0x000F0000 - (0x00010000))
+  RAM_NVIC (rwx) : ORIGIN = 0x10000000, LENGTH = 0x100
+  RAM (rwx) : ORIGIN = (0x10000000 + 0x100), LENGTH = (384K - (0x100))
+}

sfy-buoy/sombie/src/README.md

@@ -0,0 +1,6 @@
+# SFY+OMB = SOMBIE
+
+This variation of the SFY is designed to replicate the features of the OMB,
+except it is using the blues cellular or _iridium_ modem. It should therefore
+hopefully be a super-cheap, global, wave buoy giving you spectra and positions
+and certain intervals.

sfy-buoy/sombie/src/log.rs

@@ -0,0 +1,7 @@
+use ambiq_hal::i2c;
+use sfy::note::Notecarrier;
+
+/// A reference to the Notecarrier once it is initialized. The idea is that
+/// it can be used from reset routines to transfer log messages. In that case the main thread will
+/// not be running anyway.
+pub static mut NOTE: Option<*mut Notecarrier<i2c::Iom4>> = None;