From 8f0b942cdd964f0bfa3d775e7d8c3269c8d59edc Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Mon, 31 Jul 2023 11:09:31 +1000
Subject: [PATCH] Return zeroes when the touchwheel isn't connected

---
 src/drivers/touchwheel.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/drivers/touchwheel.cpp b/src/drivers/touchwheel.cpp
index 2e44adfd..59c2911e 100644
--- a/src/drivers/touchwheel.cpp
+++ b/src/drivers/touchwheel.cpp
@@ -78,8 +78,11 @@ uint8_t TouchWheel::ReadRegister(uint8_t reg) {
       .write_addr(kTouchWheelAddress, I2C_MASTER_READ)
       .read(&res, I2C_MASTER_NACK)
       .stop();
-  transaction.Execute();
-  return res;
+  if (transaction.Execute() == ESP_OK) {
+    return res;
+  } else {
+    return 0;
+  }
 }
 
 void TouchWheel::Update() {