1 files changed, 57 insertions, 0 deletions
diff --git a/ext/gpio_api.h b/ext/gpio_api.h
new file mode 100644
index 0000000..64140ea
--- /dev/null
+++ b/ext/gpio_api.h
@@ -0,0 +1,57 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MBED_GPIO_API_H
+#define MBED_GPIO_API_H
+
+#include "device.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Set the given pin as GPIO
+ * @param pin The pin to be set as GPIO
+ * @return The GPIO port mask for this pin
+ **/
+uint32_t gpio_set(PinName pin);
+
+/* Checks if gpio object is connected (pin was not initialized with NC)
+ * @param pin The pin to be set as GPIO
+ * @return 0 if port is initialized with NC
+ **/
+int gpio_is_connected(const gpio_t *obj);
+
+/* GPIO object */
+void gpio_init(gpio_t *obj, PinName pin);
+
+void gpio_mode (gpio_t *obj, PinMode mode);
+void gpio_dir  (gpio_t *obj, PinDirection direction);
+
+void gpio_write(gpio_t *obj, int value);
+int  gpio_read (gpio_t *obj);
+
+// the following set of functions are generic and are implemented in the common gpio.c file
+void gpio_init_in(gpio_t* gpio, PinName pin);
+void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode);
+void gpio_init_out(gpio_t* gpio, PinName pin);
+void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value);
+void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif