Merge pull request #6 from lagomorph/compilefix

Fix compilation error

README.md

@@ -9,6 +9,14 @@ This library is an improvement over my previous now deprecated library [SwiftLin
 <a href="https://developer.apple.com/swift"><img src="https://img.shields.io/badge/swift3-compatible-orange.svg?style=flat" alt="Swift 3 compatible" /></a>
 <a href="https://raw.githubusercontent.com/uraimo/SwiftyGPIO/master/LICENSE"><img src="http://img.shields.io/badge/license-MIT-blue.svg?style=flat" alt="License: MIT" /></a>
 
+## Talk on this library
+
+I gave a talk on this library and one of its examples SwiftSerialIM. Click on the links below to see the slides and video.
+
+[![My slides on slideshare](first-slide.png)](http://www.slideshare.net/yeokm1/a-science-project-swift-serial-chat)
+
+[![](http://img.youtube.com/vi/6PWP1eZo53s/0.jpg)](https://www.youtube.com/watch?v=6PWP1eZo53s)
+
 ## Mac OS Preparation
 
 You should have Xcode 8 installed with the command line tools.
@@ -188,10 +196,15 @@ func readUntilChar(_ terminator: CChar) throws -> String
 ```
 Keep reading until the specified CChar is encountered. Return the string read so far without that value.
 
+```swift
+func readByte() throws -> UInt8
+```
+Read only one byte. This works best if `minimumBytesToRead` has been set to `1` when opening the port. This function internally calls `readBytes()`.
+
 ```swift
 func readChar() throws -> UnicodeScalar
 ```
-Read only one character. This works best if `minimumBytesToRead` has been set to `1` when opening the port. This function internally calls `readBytes()`.
+Read only one character. This works best if `minimumBytesToRead` has been set to `1` when opening the port. This function internally calls `readByte()`.
 
 ### Writing data to the port
 

Sources/SwiftSerial.swift

@@ -446,7 +446,7 @@ extension SerialPort {
         return try readUntilChar(newlineChar)
     }
 
-    public func readChar() throws -> UnicodeScalar {
+    public func readByte() throws -> UInt8 {
         let buffer = UnsafeMutablePointer<UInt8>.allocate(capacity: 1)
         
         defer {
@@ -457,11 +457,15 @@ extension SerialPort {
             let bytesRead = try readBytes(into: buffer, size: 1)
             
             if bytesRead > 0 {
-                let character = UnicodeScalar(buffer[0])
-                return character     
+                return buffer[0]
             }
         }
+    }
 
+    public func readChar() throws -> UnicodeScalar {
+        let byteRead = try readByte()
+        let character = UnicodeScalar(byteRead)
+        return character
     }
    
 }