From b5a83a54a2f62baa324b25ed4129b6a76e06f7b8 Mon Sep 17 00:00:00 2001
From: arfrie22 <43021241+arfrie22@users.noreply.github.com>
Date: Mon, 5 Aug 2024 14:54:46 -0400
Subject: [PATCH] update build script to set clock speed

---
 build.sh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/build.sh b/build.sh
index a451f895..9ffb2d04 100755
--- a/build.sh
+++ b/build.sh
@@ -4,9 +4,12 @@ set -e
 function enable_i2c {
     if command -v raspi-config &> /dev/null; then
         echo "Enabling i2c"
-        sudo dtparam i2c_baudrate=400000
         sudo modprobe i2c-dev
         sudo raspi-config nonint do_i2c 0
+        if ! grep -q 'dtparam=i2c_arm=on$ /boot/config.txt'; then
+            echo "Setting the i2c clock speed to 400 kHz, you will have to reboot for this to take effect."
+            sudo sed -i -e 's/dtparam=i2c_arm=on$/dtparam=i2c_arm=on,i2c_arm_baudrate=400000/g' /boot/config.txt
+        fi
     else
 		echo "Can not automatically enable i2c you might have to do this manually"
 	fi