From b30644ac924ebbab9ac6b28871d05f6cf6a56ed6 Mon Sep 17 00:00:00 2001
From: xyqyear <xyqyear@gmail.com>
Date: Sun, 16 Jul 2023 08:49:21 +0800
Subject: [PATCH] add explaination regarding baseline update

---
 maimaiTouchControl.ino | 1 +
 1 file changed, 1 insertion(+)

diff --git a/maimaiTouchControl.ino b/maimaiTouchControl.ino
index 4295526..d932e48 100644
--- a/maimaiTouchControl.ino
+++ b/maimaiTouchControl.ino
@@ -91,6 +91,7 @@ void MprSetup(Adafruit_MPR121 cap)
   // FDL is the filter delay count limit, the baseline will be updated after this many samples
   //   if a touch is detected mid way, the update is cancelled
   // NHD is the noise half delta, the baseline will be changed this much when the above conditions are met
+  // please note that the actual update delay is affected by the second stage filter
   cap.writeRegister(MPR121_MHDR, MHDR);
   cap.writeRegister(MPR121_NHDR, NHDR);
   cap.writeRegister(MPR121_NCLR, NCLR);