AP_Compass: use memcmp to check whoami result code from HMC5843 device

Co-authored-by: muramura <[email protected]>
ArduPilot · Sep 22, 2024 · b9e06bb · b9e06bb
1 parent 0020cf5
commit b9e06bb
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/libraries/AP_Compass/AP_Compass_HMC5843.cpp b/libraries/AP_Compass/AP_Compass_HMC5843.cpp
@@ -334,9 +334,7 @@ bool AP_Compass_HMC5843::_check_whoami()
         // can't talk on bus
         return false;        
     }
-    if (id[0] != 'H' ||
-        id[1] != '4' ||
-        id[2] != '3') {
+    if (memcmp(id, "H43", 3) != 0) {
         // not a HMC5x83 device
         return false;
     }