Turn off some dependencies for library users

.github/workflows/ci.yml

@@ -80,7 +80,6 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-
       - uses: actions/checkout@v4
 
       - uses: ./.github/actions/setup-target
@@ -89,6 +88,7 @@ jobs:
           target: ${{ matrix.platform.target }}
 
       - run: cargo check -p espflash --lib --no-default-features
+      - run: cargo check -p espflash --lib --no-default-features --features serialport
 
   msrv:
     name: Check MSRV (${{ matrix.platform.target }})

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Non-linux-musl: Only list the available USB Ports by default (#590)
 - `FlashData::new` now returns `crate::Error` (#591)
 - Moved `reset_after_flash` method to `reset` module (#594)
+- The `command` module now requires `serialport`. (#599)
 
 ### Removed
 

espflash/Cargo.toml

@@ -44,24 +44,24 @@ indicatif = { version = "0.17.7", optional = true }
 lazy_static = { version = "1.4.0", optional = true }
 log = "0.4.20"
 md-5 = "0.10.6"
-miette = { version = "7.0.0", features = ["fancy"] }
+miette = { version = "7.0.0" }
 parse_int = { version = "0.6.0", optional = true }
 regex = { version = "1.10.3", optional = true }
 serde = { version = "1.0.196", features = ["derive"] }
 serialport = { version = "4.3.0", optional = true }
 sha2 = "0.10.8"
-slip-codec = "0.4.0"
+slip-codec = { version = "0.4.0", optional = true }
 strum = { version = "0.26.1", features = ["derive"] }
 thiserror = "1.0.56"
-toml = "0.8.10"
+toml = { version = "0.8.10", optional = true }
 update-informer = { version = "1.1.0", optional = true }
-xmas-elf        = "0.9.1"
+xmas-elf        = { version = "0.9.1" }
 
 [target.'cfg(unix)'.dependencies]
 libc = "0.2.153"
 
 [features]
-default = ["cli", "serialport"]
+default = ["cli"]
 cli = [
     "dep:addr2line",
     "dep:clap",
@@ -78,8 +78,11 @@ cli = [
     "dep:indicatif",
     "dep:lazy_static",
     "dep:parse_int",
-    "dep:regex",
-    "dep:serialport",
+    "dep:toml",
     "dep:update-informer",
+    "serialport",
+    "miette/fancy"
 ]
-serialport = ["dep:serialport"]
+
+# enables connecting to a device via serial port
+serialport = ["dep:serialport", "dep:slip-codec", "dep:regex", "dep:toml"]

espflash/src/command.rs

@@ -1,11 +1,11 @@
-//! Send commands to a target device
+//! Commands to work with a flasher stub running on a target device
 
 use std::{io::Write, mem::size_of, time::Duration};
 
 use bytemuck::{bytes_of, Pod, Zeroable};
 use strum::Display;
 
-use crate::flasher::{checksum, SpiAttachParams, SpiSetParams, CHECKSUM_INIT};
+use crate::flasher::{SpiAttachParams, SpiSetParams};
 
 const DEFAULT_TIMEOUT: Duration = Duration::from_secs(3);
 const ERASE_REGION_TIMEOUT_PER_MB: Duration = Duration::from_secs(30);
@@ -513,3 +513,13 @@ fn data_command<W: Write>(
     }
     Ok(())
 }
+
+const CHECKSUM_INIT: u8 = 0xEF;
+
+fn checksum(data: &[u8], mut checksum: u8) -> u8 {
+    for byte in data {
+        checksum ^= *byte;
+    }
+
+    checksum
+}

espflash/src/connection/reset.rs

@@ -15,7 +15,7 @@ use crate::{
     command::{Command, CommandType},
     connection::{Connection, Port, USB_SERIAL_JTAG_PID},
     error::Error,
-    flasher,
+    flasher::FLASH_WRITE_SIZE,
 };
 
 /// Default time to wait before releasing the boot pin after a reset
@@ -253,12 +253,11 @@ pub fn soft_reset(
             connection.with_timeout(CommandType::FlashBegin.timeout(), |connection| {
                 let size: u32 = 0;
                 let offset: u32 = 0;
-                let blocks: u32 = (size + flasher::FLASH_WRITE_SIZE as u32 - 1)
-                    / flasher::FLASH_WRITE_SIZE as u32;
+                let blocks: u32 = (size + FLASH_WRITE_SIZE as u32 - 1) / FLASH_WRITE_SIZE as u32;
                 connection.command(Command::FlashBegin {
                     size,
                     blocks,
-                    block_size: flasher::FLASH_WRITE_SIZE.try_into().unwrap(),
+                    block_size: FLASH_WRITE_SIZE.try_into().unwrap(),
                     offset,
                     supports_encryption: false,
                 })
@@ -272,12 +271,11 @@ pub fn soft_reset(
         connection.with_timeout(CommandType::FlashBegin.timeout(), |connection| {
             let size: u32 = 0;
             let offset: u32 = 0;
-            let blocks: u32 =
-                (size + flasher::FLASH_WRITE_SIZE as u32 - 1) / flasher::FLASH_WRITE_SIZE as u32;
+            let blocks: u32 = (size + FLASH_WRITE_SIZE as u32 - 1) / FLASH_WRITE_SIZE as u32;
             connection.command(Command::FlashBegin {
                 size,
                 blocks,
-                block_size: flasher::FLASH_WRITE_SIZE.try_into().unwrap(),
+                block_size: FLASH_WRITE_SIZE.try_into().unwrap(),
                 offset,
                 supports_encryption: false,
             })

espflash/src/error.rs

@@ -1,22 +1,23 @@
 //! Library and application errors
 
-use std::{
-    fmt::{Display, Formatter},
-    io,
-};
+#[cfg(feature = "serialport")]
+use std::fmt::{Display, Formatter};
 
 use miette::Diagnostic;
-use slip_codec::SlipError;
-use strum::{FromRepr, VariantNames};
+use std::io;
+use strum::VariantNames;
 use thiserror::Error;
 
 #[cfg(feature = "cli")]
 use crate::cli::monitor::parser::esp_defmt::DefmtError;
+#[cfg(feature = "serialport")]
+use crate::command::CommandType;
 use crate::{
-    command::CommandType,
     flasher::{FlashFrequency, FlashSize},
     targets::Chip,
 };
+#[cfg(feature = "serialport")]
+use slip_codec::SlipError;
 
 /// All possible errors returned by espflash
 #[derive(Debug, Diagnostic, Error)]
@@ -106,7 +107,7 @@ pub enum Error {
 
     #[cfg(not(feature = "serialport"))]
     #[error(transparent)]
-    IoError(#[from] std::io::Error),
+    IoError(#[from] io::Error),
 
     #[error("Specified partition table path is not a .bin or .csv file")]
     #[diagnostic(code(espflash::invalid_partition_table_path))]
@@ -183,10 +184,11 @@ pub enum Error {
     InvalidElf(#[from] ElfError),
 
     #[error("The bootloader returned an error")]
+    #[cfg(feature = "serialport")]
     #[diagnostic(transparent)]
     RomError(#[from] RomError),
 
-    #[cfg(feature = "serialport")]
+    #[cfg(feature = "cli")]
     #[error(transparent)]
     #[diagnostic(transparent)]
     Defmt(#[from] DefmtError),
@@ -204,7 +206,7 @@ pub enum Error {
     InternalError,
 
     #[error("Failed to open file: {0}")]
-    FileOpenError(String, #[source] std::io::Error),
+    FileOpenError(String, #[source] io::Error),
 
     #[error("Failed to parse partition table")]
     Partition(#[from] esp_idf_part::Error),
@@ -278,6 +280,7 @@ pub enum ConnectionError {
     #[diagnostic(code(espflash::read_missmatch))]
     ReadMissmatch(u32, u32),
 
+    #[cfg(feature = "serialport")]
     #[error("Timeout while running {0}command")]
     #[diagnostic(code(espflash::timeout))]
     Timeout(TimedOutCommand),
@@ -327,10 +330,12 @@ impl From<SlipError> for ConnectionError {
 
 /// An executed command which has timed out
 #[derive(Clone, Debug, Default)]
+#[cfg(feature = "serialport")]
 pub struct TimedOutCommand {
     command: Option<CommandType>,
 }
 
+#[cfg(feature = "serialport")]
 impl Display for TimedOutCommand {
     fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
         match &self.command {
@@ -340,16 +345,18 @@ impl Display for TimedOutCommand {
     }
 }
 
+#[cfg(feature = "serialport")]
 impl From<CommandType> for TimedOutCommand {
     fn from(ct: CommandType) -> Self {
         TimedOutCommand { command: Some(ct) }
     }
 }
 
 /// Errors originating from a device's ROM functionality
-#[derive(Clone, Copy, Debug, Default, Diagnostic, Error, FromRepr)]
+#[derive(Clone, Copy, Debug, Default, Diagnostic, Error, strum::FromRepr)]
 #[non_exhaustive]
 #[repr(u8)]
+#[cfg(feature = "serialport")]
 pub enum RomErrorKind {
     #[error("Invalid message received")]
     #[diagnostic(code(espflash::rom::invalid_message))]
@@ -425,6 +432,7 @@ pub enum RomErrorKind {
     Other = 0xff,
 }
 
+#[cfg(feature = "serialport")]
 impl From<u8> for RomErrorKind {
     fn from(raw: u8) -> Self {
         Self::from_repr(raw).unwrap_or_default()
@@ -434,13 +442,15 @@ impl From<u8> for RomErrorKind {
 /// An error originating from a device's ROM functionality
 #[derive(Clone, Copy, Debug, Diagnostic, Error)]
 #[error("Error while running {command} command")]
+#[cfg(feature = "serialport")]
 #[non_exhaustive]
 pub struct RomError {
     command: CommandType,
     #[source]
     kind: RomErrorKind,
 }
 
+#[cfg(feature = "serialport")]
 impl RomError {
     pub fn new(command: CommandType, kind: RomErrorKind) -> RomError {
         RomError { command, kind }
@@ -482,13 +492,15 @@ impl From<&'static str> for ElfError {
     }
 }
 
+#[cfg(feature = "serialport")]
 pub(crate) trait ResultExt {
     /// Mark an error as having occurred during the flashing stage
     fn flashing(self) -> Self;
     /// Mark the command from which this error originates
     fn for_command(self, command: CommandType) -> Self;
 }
 
+#[cfg(feature = "serialport")]
 impl<T> ResultExt for Result<T, Error> {
     fn flashing(self) -> Self {
         match self {
@@ -516,7 +528,7 @@ fn from_error_kind<E>(kind: io::ErrorKind, err: E) -> ConnectionError
 where
     E: Into<serialport::Error>,
 {
-    use std::io::ErrorKind;
+    use io::ErrorKind;
 
     match kind {
         ErrorKind::TimedOut => ConnectionError::Timeout(TimedOutCommand::default()),