readAttributeRxErrFcsCount(completionHandler:)
Declaration
func readAttributeRxErrFcsCount(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeRxErrFcsCount() async throws -> NSNumberfunc readAttributeRxErrFcsCount(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeRxErrFcsCount() async throws -> NSNumber