From 0dd1ebe7524a4e74b4190241a8d0a7b7f0ab08b3 Mon Sep 17 00:00:00 2001
From: xyqyear <xyqyear@gmail.com>
Date: Wed, 19 Jul 2023 13:24:33 +0800
Subject: [PATCH] the mpr121 datasheet specified max i2c frequency to 400khz

---
 maimaiTouchControl.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/maimaiTouchControl.ino b/maimaiTouchControl.ino
index fd35151..168e28b 100644
--- a/maimaiTouchControl.ino
+++ b/maimaiTouchControl.ino
@@ -30,7 +30,7 @@ void setup()
   mpr[1].begin(0x5B, &Wire);
   mpr[2].begin(0x5C, &Wire);
   mpr[3].begin(0x5D, &Wire);
-  Wire.setClock(800000);
+  Wire.setClock(400000);
 
   // config conversion