From 10640381387bac9893122e9fd7a2530e52522e50 Mon Sep 17 00:00:00 2001
From: Phil Taylor <phil@m0vse.uk>
Date: Tue, 7 Feb 2023 21:12:02 +0000
Subject: [PATCH] Another try

---
 usbcontroller.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/usbcontroller.cpp b/usbcontroller.cpp
index 3554542..e1ca43b 100644
--- a/usbcontroller.cpp
+++ b/usbcontroller.cpp
@@ -475,7 +475,7 @@ void usbController::runTimer()
                 lastData = data;
             }
         }
-        else if (usbDevice == eCoderPlus && data.length() >= 0x0f) {
+        else if (usbDevice == eCoderPlus && data.length() >= 0x0f && (quint8)data[0] == 0xff) {
             /* Button matrix:
             DATA2     DATA 1
             7654321076543210
@@ -494,7 +494,7 @@ void usbController::runTimer()
             0000000000000100 = button2
             0000000000000010 = button1
             */
-            quint16 tempButtons = (data[2] << 8) | (data[1] & 0xff);
+            quint16 tempButtons = ((quint8)data[2] << 8) | ((quint8)data[1] & 0xff);
 
             if (buttons != tempButtons)
             {