1 files changed, 21 insertions, 5 deletions
diff --git a/os/hal/dox/i2c.dox b/os/hal/dox/i2c.dox
index 1ffd2da47..cd5e3f698 100644
--- a/os/hal/dox/i2c.dox
+++ b/os/hal/dox/i2c.dox
@@ -31,12 +31,28 @@
  * functionalities can be used in any moment, any transition not explicitly
  * shown in the following diagram has to be considered an error and shall
  * be captured by an assertion (if enabled).
- * @if LATEX_PDF
- * @else
- * @endif
- *
+ * @dot
+  digraph example {
+    rankdir="LR";
+    node [shape=circle, fontname=Helvetica, fontsize=8, fixedsize="true",
+          width="0.9", height="0.9"];
+    edge [fontname=Helvetica, fontsize=8];
+
+    uninit [label="I2C_UNINIT", style="bold"];
+    stop [label="I2C_STOP\nLow Power"];
+    ready [label="I2C_READY\nClock Enabled"];
+	active [label="I2C_ACTIVE\nBus Active"];
+
+    uninit -> stop [label="i2cInit()"];
+    stop ->	  stop [label="i2cStop()"];
+    stop ->   ready [label="i2cStart()"];
+    ready ->  active [label="i2cMasterTransmit()\ni2cMasterReceive()"];
+	active -> ready [label="_i2c_isr_code()"];
+    ready ->  stop [label="i2cStop()"];
+  }
+ * @enddot
  * The driver is not thread safe for performance reasons, if you need to access
- * the I2C bus from multiple thread then use the @p i2cAcquireBus() and
+ * the I2C bus from multiple threads then use the @p i2cAcquireBus() and
  * @p i2cReleaseBus() APIs in order to gain exclusive access.
  *
  * @ingroup IO