From 51bf1832b8f388441adc7589076ee6e4a09a660c Mon Sep 17 00:00:00 2001
From: Me No Dev <me-no-dev@users.noreply.github.com>
Date: Thu, 28 Apr 2022 02:31:32 +0300
Subject: [PATCH] Fix onRequest being called for every slave address (#6649)

Fixes: https://github.com/espressif/arduino-esp32/issues/5907
---
 cores/esp32/esp32-hal-i2c-slave.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/cores/esp32/esp32-hal-i2c-slave.c b/cores/esp32/esp32-hal-i2c-slave.c
index e73a6db642c..99bc2c54c9b 100644
--- a/cores/esp32/esp32-hal-i2c-slave.c
+++ b/cores/esp32/esp32-hal-i2c-slave.c
@@ -719,10 +719,12 @@ static void i2c_slave_isr_handler(void* arg)
         }
         if(slave_rw){ // READ
 #if CONFIG_IDF_TARGET_ESP32
-            //SEND TX Event
-            i2c_slave_queue_event_t event;
-            event.event = I2C_SLAVE_EVT_TX;
-            pxHigherPriorityTaskWoken |= i2c_slave_send_event(i2c, &event);
+            if(i2c->dev->status_reg.scl_main_state_last == 6){
+                //SEND TX Event
+                i2c_slave_queue_event_t event;
+                event.event = I2C_SLAVE_EVT_TX;
+                pxHigherPriorityTaskWoken |= i2c_slave_send_event(i2c, &event);
+            }
 #else
             //reset TX data
             i2c_ll_txfifo_rst(i2c->dev);