From 1cb18aea82a4432b225e58910eca3f2776a86632 Mon Sep 17 00:00:00 2001
From: Michael Miller <Makuna@hotmail.com>
Date: Mon, 5 Jun 2023 18:33:51 -0700
Subject: [PATCH] disconnect mux pin (#713)

https://github.com/Makuna/NeoPixelBus/issues/704
---
 src/internal/methods/NeoEsp32I2sMethod.h  |  5 ++++-
 src/internal/methods/NeoEsp32I2sXMethod.h | 10 +++++++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/internal/methods/NeoEsp32I2sMethod.h b/src/internal/methods/NeoEsp32I2sMethod.h
index c594c70..5ebbd74 100644
--- a/src/internal/methods/NeoEsp32I2sMethod.h
+++ b/src/internal/methods/NeoEsp32I2sMethod.h
@@ -169,8 +169,11 @@ public:
             yield();
         }
 
-        i2sSetPins(_bus.I2sBusNumber, -1, -1, -1, false);
         i2sDeinit(_bus.I2sBusNumber);
+
+        gpio_matrix_out(_pin, 0x100, false, false);
+        pinMode(_pin, INPUT);
+
         free(_data);
         heap_caps_free(_i2sBuffer);
     }
diff --git a/src/internal/methods/NeoEsp32I2sXMethod.h b/src/internal/methods/NeoEsp32I2sXMethod.h
index a0263b5..e27a168 100644
--- a/src/internal/methods/NeoEsp32I2sXMethod.h
+++ b/src/internal/methods/NeoEsp32I2sXMethod.h
@@ -442,13 +442,17 @@ public:
         i2sSetPins(T_BUS::I2sBusNumber, pin, _muxId, s_context.MuxMap.MuxBusDataSize, invert);
     }
 
-    void DeregisterMuxBus()
+    void DeregisterMuxBus(uint8_t pin)
     {
         if (s_context.MuxMap.DeregisterMuxBus(_muxId))
         {
             s_context.Destruct(T_BUS::I2sBusNumber);
         }
-        // disconnect muxed pin?
+
+        // disconnect muxed pin
+        gpio_matrix_out(pin, 0x100, false, false);
+        pinMode(pin, INPUT);
+
         _muxId = s_context.MuxMap.InvalidMuxId;
     }
 
@@ -529,7 +533,7 @@ public:
             yield();
         }
 
-        _bus.DeregisterMuxBus();
+        _bus.DeregisterMuxBus(_pin);
 
         free(_data);
     }