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

Co-authored-by: muramura <ma2maru@gmail.com>
2024-09-22 13:14:54 +10:00 · 2024-09-22 13:14:54 +10:00 · 3e1ad5dab6
parent 77067edd91
commit 3e1ad5dab6
1 changed files with 1 additions and 3 deletions
--- 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;
    }