diff --git a/include/libopencm3/lpc17xx/gpio.h b/include/libopencm3/lpc17xx/gpio.h
index e69de29b..d24a9f18 100644
--- a/include/libopencm3/lpc17xx/gpio.h
+++ b/include/libopencm3/lpc17xx/gpio.h
@@ -0,0 +1,70 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LPC17XX_GPIO_H
+#define LPC17XX_GPIO_H
+
+#include <libopencm3/cm3/common.h>
+#include <libopencm3/lpc17xx/memorymap.h>
+
+/* --- Convenience macros -------------------------------------------------- */
+
+/* GPIO port base addresses (for convenience) */
+#define GPIO0				GPIO_PIO0_BASE
+#define GPIO1				GPIO_PIO1_BASE
+#define GPIO2				GPIO_PIO2_BASE
+#define GPIO3				GPIO_PIO3_BASE
+#define GPIO4				GPIO_PIO4_BASE
+
+/* GPIO number definitions (for convenience) */
+#define GPIOPIN0                        (1 << 0)
+
+/* --- GPIO registers ------------------------------------------------------ */
+
+/* GPIO data direction register (GPIOn_DIR) */
+#define GPIO_DIR(port)			MMIO32(port + 0x00)
+#define GPIO0_DIR			GPIO_DIR(GPIO0)
+#define GPIO1_DIR			GPIO_DIR(GPIO1)
+#define GPIO2_DIR			GPIO_DIR(GPIO2)
+#define GPIO3_DIR			GPIO_DIR(GPIO3)
+#define GPIO4_DIR			GPIO_DIR(GPIO4)
+
+/* GPIO port pin value register (GPIOn_PIN) */
+#define GPIO_PIN(port)			MMIO32(port + 0x14)
+#define GPIO0_PIN			GPIO_PIN(GPIO0)
+#define GPIO1_PIN			GPIO_PIN(GPIO1)
+#define GPIO2_PIN			GPIO_PIN(GPIO2)
+#define GPIO3_PIN			GPIO_PIN(GPIO3)
+#define GPIO4_PIN			GPIO_PIN(GPIO4)
+
+/* GPIO port output set register (GPIOn_SET) */
+#define GPIO_SET(port)			MMIO32(port + 0x18)
+#define GPIO0_SET			GPIO_SET(GPIO0)
+#define GPIO1_SET			GPIO_SET(GPIO1)
+#define GPIO2_SET			GPIO_SET(GPIO2)
+#define GPIO3_SET			GPIO_SET(GPIO3)
+#define GPIO4_SET			GPIO_SET(GPIO4)
+
+/* GPIO port output clear register (GPIOn_CLR) */
+#define GPIO_CLR(port)			MMIO32(port + 0x1C)
+#define GPIO0_CLR			GPIO_CLR(GPIO0)
+#define GPIO1_CLR			GPIO_CLR(GPIO1)
+#define GPIO2_CLR			GPIO_CLR(GPIO2)
+#define GPIO3_CLR			GPIO_CLR(GPIO3)
+#define GPIO4_CLR			GPIO_CLR(GPIO4)