NUVOTON: CAN: Fix filter mask being zero

On mask being zero, it means any match, not exact match. NOTE: This fix only targets CAN (M453/M487), not CAN-FD (M467). NOTE: NUC472 CAN doesn't support filter.
ARMmbed · Apr 18, 2024 · e4a55c8 · e4a55c8
1 parent 989a694
commit e4a55c8
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Showing 2 changed files with 0 additions and 8 deletions.
diff --git a/targets/TARGET_NUVOTON/TARGET_M451/can_api.c b/targets/TARGET_NUVOTON/TARGET_M451/can_api.c
@@ -314,10 +314,6 @@ int can_filter(can_t *obj, uint32_t id, uint32_t mask, CANFormat format, int32_t
     }
 
     uint32_t numask = mask;
-    if( numask == 0x0000 )
-    {
-      return CAN_SetRxMsg((CAN_T *)NU_MODBASE(obj->can), handle, (uint32_t)format, id);
-    }
     if( format == CANStandard )
     {
       numask = (mask << 18);

diff --git a/targets/TARGET_NUVOTON/TARGET_M480/can_api.c b/targets/TARGET_NUVOTON/TARGET_M480/can_api.c
@@ -363,10 +363,6 @@ int can_filter(can_t *obj, uint32_t id, uint32_t mask, CANFormat format, int32_t
     }
 
     uint32_t numask = mask;
-    if( numask == 0x0000 )
-    {
-      return CAN_SetRxMsg((CAN_T *)NU_MODBASE(obj->can), handle, (uint32_t)format, id);
-    }
     if( format == CANStandard )
     {
       numask = (mask << 18);