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mbed/hal/gpio_irq_api.h

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+
+/** \addtogroup hal */
+/** @{*/
+/* 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_IRQ_API_H
+#define MBED_GPIO_IRQ_API_H
+
+#include "device.h"
+
+#if DEVICE_INTERRUPTIN
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** GPIO IRQ events
+ */
+typedef enum {
+    IRQ_NONE,
+    IRQ_RISE,
+    IRQ_FALL
+} gpio_irq_event;
+
+/** GPIO IRQ HAL structure. gpio_irq_s is declared in the target's HAL
+ */
+typedef struct gpio_irq_s gpio_irq_t;
+
+typedef void (*gpio_irq_handler)(uint32_t id, gpio_irq_event event);
+
+/**
+ * \defgroup hal_gpioirq GPIO IRQ HAL functions
+ * @{
+ */
+
+/** Initialize the GPIO IRQ pin
+ *
+ * @param obj     The GPIO object to initialize
+ * @param pin     The GPIO pin name
+ * @param handler The handler to be attached to GPIO IRQ
+ * @param id      The object ID (id != 0, 0 is reserved)
+ * @return -1 if pin is NC, 0 otherwise
+ */
+int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id);
+
+/** Release the GPIO IRQ PIN
+ *
+ * @param obj The gpio object
+ */
+void gpio_irq_free(gpio_irq_t *obj);
+
+/** Enable/disable pin IRQ event
+ *
+ * @param obj    The GPIO object
+ * @param event  The GPIO IRQ event
+ * @param enable The enable flag
+ */
+void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable);
+
+/** Enable GPIO IRQ
+ *
+ * This is target dependent, as it might enable the entire port or just a pin
+ * @param obj The GPIO object
+ */
+void gpio_irq_enable(gpio_irq_t *obj);
+
+/** Disable GPIO IRQ
+ *
+ * This is target dependent, as it might disable the entire port or just a pin
+ * @param obj The GPIO object
+ */
+void gpio_irq_disable(gpio_irq_t *obj);
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#endif
+
+/** @}*/