set screen brightness

src/cli.rs

@@ -1,5 +1,5 @@
 #[derive(clap::Parser, std::fmt::Debug)]
-#[clap(version)]
+#[clap(version, arg_required_else_help = true)]
 pub struct Cli {
     #[arg(
         short,
@@ -19,7 +19,7 @@ pub struct Cli {
     #[clap(subcommand)]
     pub command: Mode,
     #[clap(short, long, help = "verbose logging")]
-    pub verbose: bool
+    pub verbose: bool,
 }
 
 #[derive(clap::Parser, std::fmt::Debug)]
@@ -48,6 +48,12 @@ pub enum PixelCommand {
 pub enum BrightnessCommand {
     #[command(visible_alias = "r")]
     Reset,
+    #[command(visible_alias = "s")]
+    Set {
+        brightness: u8,
+    },
+    Min,
+    Max,
 }
 
 #[derive(clap::ValueEnum, Clone, Debug)]

src/execute.rs

@@ -1,6 +1,6 @@
+use crate::cli::{BrightnessCommand, Mode, PixelCommand};
 use log::info;
 use servicepoint::{Brightness, Command, Connection};
-use crate::cli::{BrightnessCommand, Mode, PixelCommand};
 
 pub fn execute_mode(mode: Mode, connection: Connection) {
     match mode {
@@ -22,6 +22,11 @@ fn pixels(connection: &Connection, pixel_command: PixelCommand) {
 fn brightness(connection: &Connection, brightness_command: BrightnessCommand) {
     match brightness_command {
         BrightnessCommand::Reset => brightness_reset(&connection),
+        BrightnessCommand::Min => brightness_set(&connection, Brightness::MIN),
+        BrightnessCommand::Max => brightness_set(&connection, Brightness::MAX),
+        BrightnessCommand::Set { brightness } => {
+            brightness_set(&connection, Brightness::saturating_from(brightness))
+        }
     }
 }
 
@@ -38,3 +43,10 @@ fn brightness_reset(connection: &Connection) {
         .expect("Failed to reset brightness to maximum");
     info!("Reset brightness");
 }
+
+fn brightness_set(connection: &&Connection, brightness: Brightness) {
+    connection
+        .send(Command::Brightness(brightness))
+        .expect("Failed to set brightness");
+    info!("set brightness to {brightness:?}");
+}