CLI command for program download

Author: sciguy16

src/argparse.rs

@@ -1,3 +1,5 @@
+use std::path::PathBuf;
+
 use crate::Result;
 use clap::{command, Parser, Subcommand};
 
@@ -41,6 +43,13 @@ pub enum RcxMode {
     Ping,
     #[command(about = "Report ROM and FW versions")]
     Version,
+    #[command(about = "Download a program to the specified slot")]
+    Program {
+        #[clap(help = "Program slot (0-9)")]
+        slot: u8,
+        #[clap(help = "Program file")]
+        file: PathBuf,
+    },
 }
 
 pub fn parse_args() -> Result<Args> {

src/main.rs

@@ -20,6 +20,7 @@ async fn main() -> Result<()> {
         argparse::BrickType::Rcx { mode } => match mode {
             RcxMode::Ping => rcx::ping(),
             RcxMode::Version => rcx::version(),
+            RcxMode::Program { slot, file } => rcx::program(slot, file),
         },
     }
 }

src/rcx.rs

@@ -1,6 +1,9 @@
 use crate::Result;
+use color_eyre::eyre::eyre;
 use rcx::{tower::usb::UsbTower, Rcx};
+use std::path::PathBuf;
 
+const MAX_PROGRAM_SLOT: u8 = 9;
 const DEVICE: &str = "/dev/usb/legousbtower0";
 
 pub fn ping() -> Result<()> {
@@ -18,3 +21,10 @@ pub fn version() -> Result<()> {
     println!("RCX versions: {versions}");
     Ok(())
 }
+
+pub fn program(slot: u8, _file: PathBuf) -> Result<()> {
+    if slot > MAX_PROGRAM_SLOT {
+        return Err(eyre!("Program slot must be 0-9"));
+    }
+    todo!()
+}