Fix some clippy warnings, documentation updates

Author: jessebraham

README.md

@@ -1,6 +1,6 @@
 # espflash
 
-![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/esp-rs/espflash/rust.yml?branch=main&logoColor=1C2C2E&style=flat-square)
+![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/esp-rs/espflash/rust.yml?branch=main&labelColor=1C2C2E&logo=github&style=flat-square)
 ![Crates.io](https://img.shields.io/crates/l/espflash?labelColor=1C2C2E&style=flat-square)
 [![Matrix](https://img.shields.io/matrix/esp-rs:matrix.org?label=join%20matrix&color=BEC5C9&labelColor=1C2C2E&logo=matrix&style=flat-square)](https://matrix.to/#/#esp-rs:matrix.org)
 

espflash/src/command.rs

@@ -1,3 +1,5 @@
+//! Send commands to a target device
+
 use std::{io::Write, mem::size_of, time::Duration};
 
 use bytemuck::{bytes_of, Pod, Zeroable};

espflash/src/targets/flash_target/esp32.rs

@@ -131,7 +131,9 @@ impl FlashTarget for Esp32Target {
         let chunks = compressed.chunks(flash_write_size);
         let num_chunks = chunks.len();
 
-        progress.as_mut().map(|cb| cb.init(addr, num_chunks));
+        if let Some(cb) = progress.as_mut() {
+            cb.init(addr, num_chunks)
+        }
 
         // decode the chunks to see how much data the device will have to save
         let mut decoder = ZlibDecoder::new(Vec::new());
@@ -156,10 +158,14 @@ impl FlashTarget for Esp32Target {
                 },
             )?;
 
-            progress.as_mut().map(|cb| cb.update(i + 1));
+            if let Some(cb) = progress.as_mut() {
+                cb.update(i + 1)
+            }
         }
 
-        progress.as_mut().map(|cb| cb.finish());
+        if let Some(cb) = progress.as_mut() {
+            cb.finish()
+        }
 
         Ok(())
     }

espflash/src/targets/flash_target/esp8266.rs

@@ -57,7 +57,9 @@ impl FlashTarget for Esp8266Target {
         let chunks = segment.data.chunks(FLASH_WRITE_SIZE);
         let num_chunks = chunks.len();
 
-        progress.as_mut().map(|cb| cb.init(addr, num_chunks));
+        if let Some(cb) = progress.as_mut() {
+            cb.init(addr, num_chunks)
+        }
 
         for (i, block) in chunks.enumerate() {
             connection.command(Command::FlashData {
@@ -67,10 +69,14 @@ impl FlashTarget for Esp8266Target {
                 data: block,
             })?;
 
-            progress.as_mut().map(|cb| cb.update(i + 1));
+            if let Some(cb) = progress.as_mut() {
+                cb.update(i + 1)
+            }
         }
 
-        progress.as_mut().map(|cb| cb.finish());
+        if let Some(cb) = progress.as_mut() {
+            cb.finish()
+        }
 
         Ok(())
     }

espflash/src/targets/flash_target/ram.rs

@@ -63,7 +63,9 @@ impl FlashTarget for RamTarget {
         let chunks = segment.data.chunks(self.block_size);
         let num_chunks = chunks.len();
 
-        progress.as_mut().map(|cb| cb.init(addr, num_chunks));
+        if let Some(cb) = progress.as_mut() {
+            cb.init(addr, num_chunks)
+        }
 
         for (i, block) in chunks.enumerate() {
             connection.command(Command::MemData {
@@ -73,10 +75,14 @@ impl FlashTarget for RamTarget {
                 data: block,
             })?;
 
-            progress.as_mut().map(|cb| cb.update(i + 1));
+            if let Some(cb) = progress.as_mut() {
+                cb.update(i + 1)
+            }
         }
 
-        progress.as_mut().map(|cb| cb.finish());
+        if let Some(cb) = progress.as_mut() {
+            cb.finish()
+        }
 
         Ok(())
     }