diff --git a/src/CoreIO.cpp b/src/CoreIO.cpp
index 282b84b3..335c6150 100644
--- a/src/CoreIO.cpp
+++ b/src/CoreIO.cpp
@@ -178,6 +178,16 @@ void DisablePullup(Pin pin) noexcept
 #endif
 }
 
+#if SAME5x || SAMC21
+
+// Set high driver strength on an output pin
+void SetHighDriveStrength(Pin p) noexcept
+{
+	PORT->Group[GpioPortNumber(p)].PINCFG[GpioPinNumber(p)].reg |= PORT_PINCFG_DRVSTR;
+}
+
+#endif
+
 // IoPort::SetPinMode calls this
 // Warning! Changing pin mode will reset the output drive strength to normal.
 void SetPinMode(Pin pin, enum PinMode mode, uint32_t debounceCutoff = 0) noexcept
diff --git a/src/CoreIO.h b/src/CoreIO.h
index bdc9f70f..abb98be3 100644
--- a/src/CoreIO.h
+++ b/src/CoreIO.h
@@ -119,6 +119,10 @@ enum class GpioPinFunction : uint8_t
  */
 void SetPinFunction(Pin p, GpioPinFunction f) noexcept;
 
+#if SAME5x || SAMC21
+void SetHighDriveStrength(Pin p) noexcept;
+#endif
+
 /**
  * @brief Set a pin back to ordinary digital I/O
  *