From 38591884c9518894e49f336bd1285f5151c97bc2 Mon Sep 17 00:00:00 2001
From: Alexandre B <alexandre.bobkov@gmail.com>
Date: Thu, 19 Jun 2025 01:49:34 -0400
Subject: [PATCH] Update index.md

---
 index.md | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/index.md b/index.md
index 900b905..bebdb09 100644
--- a/index.md
+++ b/index.md
@@ -119,13 +119,22 @@ Smart speakers
 
 ## I2C Pins
 
-The schematic excerpt provided below illustrates the wiring configuration for the __SDA__ and __SCL__ lines. Specifically, the __SDA__ line is connected to _GPIO 8_, while the __SCL__ line is connected to _GPIO 9_ on the ESP32-S3 module.
-
-<img src="assets/ESP32-Uno-Board-Module-Pinout.png" width="50%"/>
-
-The image of the PCB board below depicts the physical locations of the __SDA__ and __SCL__ terminals.
+The schematic excerpt provided below illustrates the wiring configuration for the __SDA__ and __SCL__ lines. Specifically, the __SDA__ line is connected to _GPIO 18_, while the __SCL__ line is connected to _GPIO 19_ on the ESP32-C3 Wroom module. The image of the PCB board below depicts the physical locations of the __SDA__ and __SCL__ terminals.
 <img src="assets/ESP32-C3-BreadBoardAdapterPinout.png" width="50%"/>
 
+``` C
+i2c_config_t conf = {
+    .mode = I2C_MODE_MASTER,
+    .sda_io_num = 18,
+    .scl_io_num = 19,
+    .sda_pullup_en = GPIO_PULLUP_ENABLE,
+    .scl_pullup_en = GPIO_PULLUP_ENABLE,
+    .master.clk_speed = 100000,
+};
+i2c_param_config(I2C_NUM_0, &conf);
+i2c_driver_install(I2C_NUM_0, conf.mode, 0, 0, 0);
+```
+
 ### Micropython LED Blinky Code
 
 ``` python