Update Readme.md for Raspberry Pi 5 i2c enabling

powerboard/Readme.md

@@ -36,5 +36,68 @@ make
 ```bash
 make clean
 ```
+## I2C enable for RaspBerry Pi 5 with Raspi-OS (debian)
+Create enable_i2c.sh script:
+```bash
+cd ~
+nano enable_i2c.sh
+```
+
+Copy script inside enable_i2c.sh:
+```bash
+#!/bin/bash
+
+# Check root execution script
+if [ "$EUID" -ne 0 ]; then
+  echo "Please use root shell (sudo)"
+  exit 1
+fi
+
+# Enable i2C on /boot/config.txt
+CONFIG_FILE="/boot/config.txt"
+
+if grep -q "^dtparam=i2c_arm=on" "$CONFIG_FILE"; then
+  echo "I2C já está habilitado no $CONFIG_FILE."
+else
+  echo "Enabling I2C on $CONFIG_FILE..."
+  echo "dtparam=i2c_arm=on" >> "$CONFIG_FILE"
+fi
 
+# Load i2c-dev module
+echo "Loading i2c-dev module..."
+modprobe i2c-dev
 
+# Verify i2c module load
+if lsmod | grep -q i2c_dev; then
+  echo "i2c-dev module successfully charged."
+else
+  echo "i2c-dev module charge error."
+  exit 1
+fi
+
+# Verify /dev/i2c-1 device available
+if [ -e /dev/i2c-1 ]; then
+  echo "/dev/i2c-1 available."
+else
+  echo "/dev/i2c-1 unnavailable. Need to reboot system."
+  echo "Do you want reboot now? (s/n)"
+  read -r resposta
+  if [ "$resposta" == "s" ]; then
+    echo "System rebooting..."
+    reboot
+  else
+    echo "System needs to be rebooted to finish I2C enabling."
+  fi
+fi
+```
+Press Ctrl + O to save para salvar enable_i2c.sh then Ctrl + X to get out from nano editor.
+
+Make enable_i2c.sh runnable
+```bash
+chmod +x enable_i2c.sh
+```
+Now run enable_i2c.sh
+```bash
+sudo ./enable_i2c.sh
+```
+Continue to install modules.