diff --git a/i2c/i2c b/i2c/i2c
index 939cdc1..629be83 160000
--- a/i2c/i2c
+++ b/i2c/i2c
@@ -1 +1 @@
-Subproject commit 939cdc1196edb161c6ea25eb61a72fa4488cba06
+Subproject commit 629be83f8ad97cfcfe0d9d4cbad04e1b1f17c695
diff --git a/i2c/main.cpp b/i2c/main.cpp
index 3fe7dc9..b3de4b4 100644
--- a/i2c/main.cpp
+++ b/i2c/main.cpp
@@ -8,8 +8,21 @@ void i2cTest()
 	using config = Hardware<Prescaler::PRESCALER_1, 100000>;
 
 	I2c<config> twi;
+	constexpr auto I2CADDRESS = 0x4B;
 
 	twi.init();
+
+	if (!twi.start<I2CADDRESS>(false)) {
+		twi.stop();
+		return;
+	}
+
+	if (!twi.write(0x7F)) {
+		twi.stop();
+		return;
+	}
+
+	twi.stop();
 }
 
 int main()