rplidar2: fix compilation

This static cast is necessary for the compilation because the return value of "wait(..)" is unsigned but EVENT_TIMEOUT = -1. We will keep it until they will fix the bug in the sdk.(fixes robotology#1689)
Nicogene · Jul 11, 2018 · 30a74e4 · 30a74e4
1 parent 39aff63
commit 30a74e4
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/extern/rplidar/sdk/src/rplidar_driver.cpp b/extern/rplidar/sdk/src/rplidar_driver.cpp
@@ -525,7 +525,11 @@ u_result RPlidarDriverSerialImpl::grabScanData(rplidar_response_measurement_node
 {
     switch (_dataEvt.wait(timeout))
     {
-    case rp::hal::Event::EVENT_TIMEOUT:
+    // This static cast is necessary for the compilation
+    // because the return value of "wait(..)"
+    // is unsigned but EVENT_TIMEOUT = -1. We will keep
+    // it until they will fix the bug in the sdk.
+    case static_cast<ulong> (rp::hal::Event::EVENT_TIMEOUT):
         count = 0;
         return RESULT_OPERATION_TIMEOUT;
     case rp::hal::Event::EVENT_OK: