From 6c0494756ec020e5448bfeff6b65165db1959506 Mon Sep 17 00:00:00 2001
From: Elena ``of Valhalla'' Grandi <valhalla@trueelena.org>
Date: Fri, 4 Oct 2024 17:23:06 +0200
Subject: I2C on the ESP32-PRO

---
 source/microcontrollers/olimex-esp32-pro/index.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/source/microcontrollers/olimex-esp32-pro/index.rst b/source/microcontrollers/olimex-esp32-pro/index.rst
index 291b109..8c86d7e 100644
--- a/source/microcontrollers/olimex-esp32-pro/index.rst
+++ b/source/microcontrollers/olimex-esp32-pro/index.rst
@@ -39,6 +39,16 @@ These are the settings used:
 :Core Debug Level: None
 :Erase All Flash Before Sketch Upload: Disabled
 
+I2C
+---
+
+To use i2c on the marked pins 11 and 12 on EXT2 you need to select the
+I2C port with::
+
+   Wire.setPins(32, 27);
+
+e.g. in the ``setup()``, before starting the i2c communications.
+
 Troubleshooting
 ---------------
 
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