From 087a0658fda546fa52abd90fc8eb8a9b9b2c9111 Mon Sep 17 00:00:00 2001
From: Triston Armstrong <triston95strong@gmail.com>
Date: Fri, 11 Aug 2023 13:40:05 -0500
Subject: [PATCH] init repo and add code

---
 .gitignore  |  1 +
 Cargo.lock  |  7 +++++++
 Cargo.toml  |  8 ++++++++
 src/main.rs | 25 +++++++++++++++++++++++++
 4 files changed, 41 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..d553f48
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "kbd-bl"
+version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..0198ff8
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "kbd-bl"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..7028d69
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,25 @@
+use std::env;
+use std::fs;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    let value = &args[1];
+    let parsed = value.trim().parse::<i32>();
+
+    if parsed.is_err() {
+        panic!("Value entered ({}) is not number", value);
+    }
+
+    let parsed_value = parsed.unwrap();
+
+    if parsed_value > 255 {
+        panic!("value entered ({}) must be <= 255", value);
+    }
+
+    if parsed_value < 0 {
+        panic!("value entered ({}) must be >= 0", value);
+    }
+
+    fs::write("/sys/class/leds/kbd_backlight/brightness", value)
+        .expect("Something went wrong writing to file")
+}