From c4623f42979e50ab62c119da1d4335ff3232f77d Mon Sep 17 00:00:00 2001
From: "Earle F. Philhower, III" <earlephilhower@yahoo.com>
Date: Fri, 10 Jun 2022 11:42:04 -0700
Subject: [PATCH] Disable Wire slave interrupt on ::end (#621)

Fixes #620
---
 libraries/Wire/src/Wire.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libraries/Wire/src/Wire.cpp b/libraries/Wire/src/Wire.cpp
index 40e2b89..4e0d1d4 100644
--- a/libraries/Wire/src/Wire.cpp
+++ b/libraries/Wire/src/Wire.cpp
@@ -132,7 +132,6 @@ void TwoWire::begin(uint8_t addr) {
     irq_set_exclusive_handler(irqNo, i2c_hw_index(_i2c) == 0 ? _handler0 : _handler1);
     irq_set_enabled(irqNo, true);
 
-
     gpio_set_function(_sda, GPIO_FUNC_I2C);
     gpio_pull_up(_sda);
     gpio_set_function(_scl, GPIO_FUNC_I2C);
@@ -192,7 +191,15 @@ void TwoWire::end() {
         // ERROR
         return;
     }
+
+    if (_slave) {
+        int irqNo = I2C0_IRQ + i2c_hw_index(_i2c);
+        irq_remove_handler(irqNo, i2c_hw_index(_i2c) == 0 ? _handler0 : _handler1);
+        irq_set_enabled(irqNo, false);
+    }
+
     i2c_deinit(_i2c);
+
     pinMode(_sda, INPUT);
     pinMode(_scl, INPUT);
     _running = false;