Allow specifying monitor speed

Author: bugadani

cargo-espflash/src/main.rs

@@ -240,7 +240,13 @@ fn flash(
 
     if opts.flash_opts.monitor {
         let pid = flasher.get_usb_pid()?;
-        monitor(flasher.into_serial(), Some(&elf_data), pid).into_diagnostic()?;
+        monitor(
+            flasher.into_serial(),
+            Some(&elf_data),
+            pid,
+            opts.connect_opts.monitor_speed.unwrap_or(115200),
+        )
+        .into_diagnostic()?;
     }
 
     Ok(())

espflash/README.md

@@ -43,6 +43,9 @@ OPTIONS:
         --monitor
             Open a serial monitor after flashing
 
+        --monitor-speed <MONITOR_SPEED>
+            Baud rate at which to read console output
+
         --partition-table <PARTITION_TABLE>
             Path to a CSV file containing partition table
 

espflash/src/cli/mod.rs

@@ -41,6 +41,10 @@ pub struct ConnectOpts {
     #[clap(long)]
     pub speed: Option<u32>,
 
+    /// Baud rate at which to read console output
+    #[clap(long)]
+    pub monitor_speed: Option<u32>,
+
     /// Use RAM stub for loading
     #[clap(long)]
     pub use_stub: bool,
@@ -161,7 +165,14 @@ pub fn board_info(opts: ConnectOpts, config: Config) -> Result<()> {
 pub fn serial_monitor(opts: ConnectOpts, config: Config) -> Result<()> {
     let flasher = connect(&opts, &config)?;
     let pid = flasher.get_usb_pid()?;
-    monitor(flasher.into_serial(), None, pid).into_diagnostic()?;
+
+    monitor(
+        flasher.into_serial(),
+        None,
+        pid,
+        opts.monitor_speed.unwrap_or(115200),
+    )
+    .into_diagnostic()?;
 
     Ok(())
 }

espflash/src/cli/monitor.rs

@@ -87,6 +87,7 @@ pub fn monitor(
     mut serial: Box<dyn SerialPort>,
     elf: Option<&[u8]>,
     pid: u16,
+    baud: u32,
 ) -> serialport::Result<()> {
     println!("Commands:");
     println!("    CTRL+R    Reset chip");
@@ -95,7 +96,7 @@ pub fn monitor(
 
     // Explicitly set the baud rate when starting the serial monitor, to allow using
     // different rates for flashing.
-    serial.set_baud_rate(115_200)?;
+    serial.set_baud_rate(baud)?;
     serial.set_timeout(Duration::from_millis(5))?;
 
     let _raw_mode = RawModeGuard::new();

espflash/src/main.rs

@@ -177,7 +177,14 @@ fn flash(opts: Opts, config: Config) -> Result<()> {
 
     if opts.flash_opts.monitor {
         let pid = flasher.get_usb_pid()?;
-        monitor(flasher.into_serial(), Some(&elf_data), pid).into_diagnostic()?;
+
+        monitor(
+            flasher.into_serial(),
+            Some(&elf_data),
+            pid,
+            opts.connect_opts.monitor_speed.unwrap_or(115200),
+        )
+        .into_diagnostic()?;
     }
 
     Ok(())