From e8f2247e719e44796a4d89f6973e3a3c0d21568a Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Mon, 29 Oct 2018 16:01:47 +1300
Subject: Implement BCE output control

---
 src/org/traccar/helper/Checksum.java | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/org/traccar/helper/Checksum.java')

diff --git a/src/org/traccar/helper/Checksum.java b/src/org/traccar/helper/Checksum.java
index 5aed84bf8..adfa697c5 100644
--- a/src/org/traccar/helper/Checksum.java
+++ b/src/org/traccar/helper/Checksum.java
@@ -160,6 +160,14 @@ public final class Checksum {
         return String.format("*%02x", checksum).toUpperCase();
     }
 
+    public static int sum(ByteBuffer buf) {
+        byte checksum = 0;
+        while (buf.hasRemaining()) {
+            checksum += buf.get();
+        }
+        return checksum;
+    }
+
     public static String sum(String msg) {
         byte checksum = 0;
         for (byte b : msg.getBytes(StandardCharsets.US_ASCII)) {
-- 
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