.vscode/launch.json

@@ -0,0 +1,45 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug executable 'rustbook'",
+            "cargo": {
+                "args": [
+                    "build",
+                    "--bin=rustbook",
+                    "--package=rustbook"
+                ],
+                "filter": {
+                    "name": "rustbook",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug unit tests in executable 'rustbook'",
+            "cargo": {
+                "args": [
+                    "test",
+                    "--no-run",
+                    "--bin=rustbook",
+                    "--package=rustbook"
+                ],
+                "filter": {
+                    "name": "rustbook",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        }
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,57 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Cargo build (debug)",
+            "type": "process",
+            "command": "cargo",
+            "args": ["build"],
+            "problemMatcher": [
+                "$rustc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        },
+        {
+            "label": "Cargo build (release)",
+            "type": "process",
+            "command": "cargo",
+            "args": ["build", "--release"],
+            "problemMatcher": [
+                "$rustc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        },
+        {
+            "label": "Cargo clean",
+            "type": "process",
+            "command": "cargo",
+            "args": ["clean"],
+            "problemMatcher": [
+                "$rustc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        },
+        {
+            "label": "Cargo doc",
+            "type": "process",
+            "command": "cargo",
+            "args": ["doc"],
+            "problemMatcher": [
+                "$rustc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        },
+    ]
+}

Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rustbook"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+linux_battery = { git = "https://git.blackfinn.de/rust/linux_battery.git" }

README.md

@@ -1,3 +1,17 @@
 # batman
 
-Simple linux battery monitor
+Simple linux battery monitor.
+
+## Build
+
+### debug
+
+```shell
+cargo build
+```
+
+### release
+
+```shell
+cargo build --release
+```

batman.log

@@ -0,0 +1,3 @@
+1624598988	Unknown	98 %
+1624598990	Unknown	98 %
+1624598992	Unknown	98 %

src/main.rs

@@ -0,0 +1,32 @@
+use linux_battery::Battery;
+
+use std::fs::OpenOptions;
+use std::io::Write;
+use std::time::{Duration, SystemTime};
+use std::thread::sleep;
+
+fn main() {
+    let mut battery = Battery::new("BAT0");
+    let mut log_file = OpenOptions::new()
+        .create(true)
+        .append(true)
+        .open("batman.log")
+        .expect("can't open log file");
+
+    loop {
+        let sys_time = SystemTime::now();
+        match sys_time.duration_since(SystemTime::UNIX_EPOCH) {
+            Ok(n) => {
+                let mut log_entry = format!("{}\t{}", n.as_secs(), battery.state());
+                match battery.capacity() {
+                    Some(cap) => log_entry = format!("{}\t{} %", log_entry, cap),
+                    None => {},
+                }
+                log_entry = format!("{}\r\n", log_entry);
+                log_file.write_all(log_entry.as_bytes()).expect("write to file failed");
+            },
+            Err(_) => {},
+        }
+        sleep(Duration::new(2, 0));
+    }
+}