1 files changed, 50 insertions, 0 deletions
diff --git a/share/examples/libusb20/util.c b/share/examples/libusb20/util.c
new file mode 100644
index 0000000..4a24ee0
--- /dev/null
+++ b/share/examples/libusb20/util.c
@@ -0,0 +1,50 @@
+/* ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42) (by Poul-Henning Kamp):
+ * <joerg@FreeBSD.ORG> wrote this file.  As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return.        Joerg Wunsch
+ * ----------------------------------------------------------------------------
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Helper functions common to all examples
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <libusb20.h>
+#include <libusb20_desc.h>
+
+#include "util.h"
+
+/*
+ * Print "len" bytes from "buf" in hex, followed by an ASCII
+ * representation (somewhat resembling the output of hd(1)).
+ */
+void
+print_formatted(uint8_t *buf, uint32_t len)
+{
+  int i, j;
+
+  for (j = 0; j < len; j += 16)
+    {
+      printf("%02x: ", j);
+
+      for (i = 0; i < 16 && i + j < len; i++)
+	printf("%02x ", buf[i + j]);
+      printf("  ");
+      for (i = 0; i < 16 && i + j < len; i++)
+	{
+	  uint8_t c = buf[i + j];
+	  if(c >= ' ' && c <= '~')
+	    printf("%c", (char)c);
+	  else
+	    putchar('.');
+	}
+      putchar('\n');
+    }
+}