Print device/configuration descriptor

Author: manuelbl

examples/enumerate/pom.xml

@@ -23,10 +23,25 @@
       <artifactId>java-does-usb</artifactId>
       <version>0.6.0-SNAPSHOT</version>
     </dependency>
+    <dependency>
+      <groupId>org.tinylog</groupId>
+      <artifactId>tinylog-api</artifactId>
+      <version>2.6.2</version>
+    </dependency>
+    <dependency>
+      <groupId>org.tinylog</groupId>
+      <artifactId>tinylog-impl</artifactId>
+      <version>2.6.2</version>
+    </dependency>
+    <dependency>
+      <groupId>org.tinylog</groupId>
+      <artifactId>jsl-tinylog</artifactId>
+      <version>2.6.2</version>
+    </dependency>
   </dependencies>
 
   <build>
-    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
+    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (maybe moved to parent pom) -->
       <plugins>
         <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
         <plugin>

examples/enumerate/src/main/java/net/codecrete/usb/examples/Enumerate.java

@@ -14,6 +14,7 @@
 /**
  * Sample application enumerating connected USB devices.
  */
+@SuppressWarnings("java:S106")
 public class Enumerate {
 
     public static void main(String[] args) {
@@ -42,10 +43,14 @@ private static void printDevice(USBDevice device) {
         for (var intf: device.interfaces())
             printInterface(intf);
 
+        printRawDescriptor("Device descriptor", device.deviceDescriptor());
+        printRawDescriptor("Configuration descriptor", device.configurationDescriptor());
+
         System.out.println();
         System.out.println();
     }
 
+    @SuppressWarnings("OptionalUsedAsFieldOrParameterType")
     private static void printInParens(Optional<String> text) {
         if (text.isPresent()) {
             System.out.printf(" (%s)%n", text.get());
@@ -85,4 +90,17 @@ private static void printEndpoint(USBEndpoint endpoint) {
         System.out.printf("        Transfer type: %s%n", endpoint.transferType().name());
         System.out.printf("        Packet size: %d bytes%n", endpoint.packetSize());
     }
+
+    private static void printRawDescriptor(String title, byte[] descriptor) {
+        System.out.println();
+        System.out.println(title);
+
+        int len = descriptor.length;
+        for (int i = 0; i < len; i += 16) {
+            System.out.printf("%04x ", i);
+            for (int j = i; j < Math.min(i + 16, len); j += 1)
+                System.out.printf(" %02x", descriptor[j] & 255);
+            System.out.println();
+        }
+    }
 }

examples/enumerate/src/main/resources/tinylog.properties

@@ -0,0 +1,3 @@
+writer        = console
+writer.format = {date: HH:mm:ss.SSS} {level|size=5} [{class|size=40}] {message}
+writer.level  = info