1 files changed, 48 insertions, 0 deletions
diff --git a/boards/base/RaspberryPi/FreeRTOS/gpio.h b/boards/base/RaspberryPi/FreeRTOS/gpio.h
new file mode 100644
index 00000000..fa459707
--- /dev/null
+++ b/boards/base/RaspberryPi/FreeRTOS/gpio.h
@@ -0,0 +1,48 @@
+#ifndef _GPIO_H_
+#define _GPIO_H_
+
+/* GPIO event detect types */
+enum DETECT_TYPE {
+	DETECT_NONE,
+	DETECT_RISING,
+	DETECT_FALLING,
+	DETECT_HIGH,
+	DETECT_LOW,
+	DETECT_RISING_ASYNC,
+	DETECT_FALLING_ASYNC
+};
+
+/* GPIO pull up or down states */
+enum PULL_STATE {
+	PULL_DISABLE,
+	PULL_UP,
+	PULL_DOWN,
+	PULL_RESERVED
+};
+
+/* Pin data direction */
+enum GPIO_DIR {
+	GPIO_IN,
+	GPIO_OUT
+};
+
+/* GPIO pin setup */
+void SetGpioFunction	(unsigned int pinNum, unsigned int funcNum);
+/* A simple wrapper around SetGpioFunction */
+void SetGpioDirection	(unsigned int pinNum, enum GPIO_DIR dir);
+
+/* Set GPIO output level */
+void SetGpio			(unsigned int pinNum, unsigned int pinVal);
+
+/* Read GPIO pin level */
+int ReadGpio			(unsigned int pinNum);
+
+/* GPIO pull up/down resistor control function (NOT YET IMPLEMENTED) */
+int PudGpio				(unsigned int pinNum, enum PULL_STATE state);
+
+/* Interrupt related functions */
+void EnableGpioDetect	(unsigned int pinNum, enum DETECT_TYPE type);
+void DisableGpioDetect	(unsigned int pinNum, enum DETECT_TYPE type);
+void ClearGpioInterrupt	(unsigned int pinNum);
+
+#endif