From 4f9948d1dec3793c3682e488911b40db3c4c0280 Mon Sep 17 00:00:00 2001
From: Daniel Agar <daniel@agar.ca>
Date: Wed, 20 Apr 2022 14:56:12 -0400
Subject: [PATCH] WIP

---
 .../magnetometer/isentek/ist8310/IST8310.cpp    | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/drivers/magnetometer/isentek/ist8310/IST8310.cpp b/src/drivers/magnetometer/isentek/ist8310/IST8310.cpp
index b7d8512ce9..c329542666 100644
--- a/src/drivers/magnetometer/isentek/ist8310/IST8310.cpp
+++ b/src/drivers/magnetometer/isentek/ist8310/IST8310.cpp
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   Copyright (c) 2020 PX4 Development Team. All rights reserved.
+ *   Copyright (c) 2020-2022 PX4 Development Team. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -85,14 +85,19 @@ void IST8310::print_status()
 
 int IST8310::probe()
 {
-	const uint8_t WAI = RegisterRead(Register::WAI);
+	for (int retry = 0; retry < 3; retry++) {
 
-	if (WAI != Device_ID) {
-		DEVICE_DEBUG("unexpected WAI 0x%02x", WAI);
-		return PX4_ERROR;
+		const uint8_t WAI = RegisterRead(Register::WAI);
+
+		if (WAI == Device_ID) {
+			return PX4_OK;
+
+		} else {
+			DEVICE_DEBUG("unexpected WAI 0x%02x", WAI);
+		}
 	}
 
-	return PX4_OK;
+	return PX4_ERROR;
 }
 
 void IST8310::RunImpl()