Recalibrate the touchwheel after unlocking

Also power it down whilst we're locked. This saves about half a
milliamp.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/tangara/input/input_touch_wheel.cpp b/src/tangara/input/input_touch_wheel.cpp
index b961bb02..a5069ae4 100644
--- a/src/tangara/input/input_touch_wheel.cpp
+++ b/src/tangara/input/input_touch_wheel.cpp
@@ -108,6 +108,15 @@ auto TouchWheel::triggers()
   return {centre_, up_, right_, down_, left_};
 }
 
+auto TouchWheel::onLock() -> void {
+  wheel_.LowPowerMode(true);
+}
+
+auto TouchWheel::onUnlock() -> void {
+  wheel_.LowPowerMode(false);
+  wheel_.Recalibrate();
+}
+
 auto TouchWheel::sensitivity() -> lua::Property& {
   return sensitivity_;
 }