added depedency for gpio, implemented proof of concept alarm

.sops.yaml

@@ -0,0 +1,7 @@
+keys:
+    - &primary age1xwmpq4ydrqmj8c9petpp9q5ujupdkd40puqqgpqvnuw23nckuupshrwcr9
+creation_rules:
+    - path_regex: deploy.config.toml$
+      key_groups:
+          - age:
+                - *primary

Cargo.lock

@@ -2,6 +2,49 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "bitflags"
+version = "2.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
+[[package]]
+name = "gpio-cdev"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09831ec59b80be69e75d29cf36e16afbbe5fd1af9c1bf4689ad91c77db5aa6a6"
+dependencies = [
+ "bitflags",
+ "libc",
+ "nix",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.178"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37c93d8daa9d8a012fd8ab92f088405fb202ea0b6ab73ee2482ae66af4f42091"
+
+[[package]]
+name = "nix"
+version = "0.27.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2eb04e9c688eff1c89d72b407f168cf79bb9e867a9d3323ed6c01519eb9cc053"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "snooze-pal"
 version = "0.1.0"
+dependencies = [
+ "gpio-cdev",
+]

Cargo.toml

@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+gpio-cdev = "0.6.0"

deploy.config.toml.secret

@@ -0,0 +1,15 @@
+{
+	"data": "ENC[AES256_GCM,data:ie0ngMYra78CNOa4uLqgnGRWfWZvKCnxrmz7nezgdi3HN2x2ooMFcW+oIq5aOVUOpBAXHAo9EuuexRWrVgObOXwtWfVw92C+,iv:FBTgA6hI6P8Ls6/zLFBSVb8/ZriqU1BBSMNh5X+4gjc=,tag:9WuvIuXvkGVFHHNZcDkV7w==,type:str]",
+	"sops": {
+		"age": [
+			{
+				"recipient": "age1xwmpq4ydrqmj8c9petpp9q5ujupdkd40puqqgpqvnuw23nckuupshrwcr9",
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB6aWhUMUVYRlJRNmRIYmVn\nZjVrMThjblltYWxnRUZvUXQ0VjRFYXJod0dBCnZHelNMWTYxOE9CSEl0MTZ3RnM1\nT2R2U1Y5ZHZhU2NFWHEvU1UrcGc2Sm8KLS0tIForR1J4ZVJXeGRucGo5MWMweVpx\nQkxrOHorZFFJZkY3aTBOQi9YRzRtOVEK5n9IyDyvaXzrUVC8JnNLDM+GoGor3TQe\nQ7938OP9t2+gkrRpOBn+t2Bw5WhX0fSB2cmcq6xgQLuVnIdgLUh4yA==\n-----END AGE ENCRYPTED FILE-----\n"
+			}
+		],
+		"lastmodified": "2025-11-26T20:53:52Z",
+		"mac": "ENC[AES256_GCM,data:txZjdkP/2M92YrngT+nILsar316i0ILTjV9iJuE59mAqIXKsUMS+BEWwTfiwtz4pMvyJ5TEFVhvJ//pwFuoXkRUngZcs9wWy2xzCAGK0SA7TIA8nO1k1Qp1akbZX+dkcDUJRuk64LiR1Mnh0FbA1Eej2Fccve9ZAyKHFD4I57O4=,iv:phcTOg8GUY6mJwqE0WTbP0fUTYZNBgEeqvwilGVgnJY=,tag:U35RSlQ0AMy2T5yixGOAfw==,type:str]",
+		"unencrypted_suffix": "_unencrypted",
+		"version": "3.11.0"
+	}
+}

deploy.nu

@@ -0,0 +1,20 @@
+#!/usr/bin/env nu
+
+def main [] {
+	main run
+}
+
+def "main run" [] {
+	let config = get-config
+	nix build $".#($config | get target_platform)"
+	scp result/bin/snooze-pal ($config | get target_machine):bin/snooze-pal
+	ssh ($config | get target_machine) "chmod +rwx bin/snooze-pal && bin/snooze-pal"
+}
+
+def get-config [] {
+	if ('./deploy.config.toml.secret' | path exists) {
+		return (sops decrypt deploy.config.toml.secret | from toml)
+	} else {
+		return (open deploy.config.toml)
+	}
+}

src/main.rs

@@ -1,6 +1,34 @@
 // This project is licensed under MIT Licese.
 // See the LICENSE folder for details.
 
-fn main() {
-    println!("Hello, world!");
+use std::thread;
+
+use gpio_cdev::{Chip, LineRequestFlags};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut chip = Chip::new("/dev/gpiochip0")?;
+    alarm(&mut chip)?;
+    Ok(())
+}
+
+fn alarm(chip: &mut Chip) -> Result<(), Box<dyn std::error::Error>> {
+    let beeper = chip
+        .get_line(17)?
+        .request(LineRequestFlags::OUTPUT, 0, "my-gpio")?;
+
+    for _ in 0..5 {
+        beeper.set_value(1)?;
+        thread::sleep(std::time::Duration::from_secs(1));
+        beeper.set_value(0)?;
+        thread::sleep(std::time::Duration::from_secs(1));
+    }
+
+    Ok(())
+}
+
+fn turn_off_led(chip: &mut Chip) -> Result<(), Box<dyn std::error::Error>> {
+    chip.get_line(17)?
+        .request(LineRequestFlags::OUTPUT, 0, "my-gpio")?
+        .set_value(0)?;
+    Ok(())
 }