Diff: targets/hal/TARGET_Atmel/TARGET_SAM_CortexM4/config/TARGET_SAMG55/conf_extint.h

Revision:

107:414e9c822e99

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Atmel/TARGET_SAM_CortexM4/config/TARGET_SAMG55/conf_extint.h	Tue Apr 05 18:15:12 2016 +0100
@@ -0,0 +1,100 @@
+/**
+ * \file
+ *
+ * \brief SAM G55 External Interrupt Driver Configuration Header
+ *
+ * Copyright (C) 2014-2015 Atmel Corporation. All rights reserved.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * 3. The name of Atmel may not be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * 4. This software may only be redistributed and used in connection with an
+ *    Atmel microcontroller product.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * \asf_license_stop
+ *
+ */
+#ifndef CONF_EXTINT_H_INCLUDED
+#define CONF_EXTINT_H_INCLUDED
+
+#include <asf.h>
+
+/**
+ * Push button definitions for sleep mode and active mode
+ * @{
+ */
+#define PIN_PUSHBUTTON_WAKEUP_PIO    PIOA
+#define PIN_PUSHBUTTON_WAKEUP_MASK   PIO_PA2
+#define PIN_PUSHBUTTON_WAKEUP_ID     ID_PIOA
+#define PIN_PUSHBUTTON_WAKEUP_ATTR   PIO_DEFAULT
+/** @} */
+
+/** Wakeup pin for wait mode: SW0 */
+#define WAKEUP_WAIT_INPUT_ID    (1u << 2)
+/** Wakeup pin for backup mode: Touchscreen controller IRQ pin */
+#define WAKEUP_BACKUP_INPUT_ID  (1u << 2)
+
+void button_cb(void);
+static inline void button_handler(uint32_t ul_id, uint32_t ul_mask);
+
+/* Button Initialize */
+static inline void button_init(void)
+{
+    /* Adjust PIO debounce filter parameters, using 10 Hz filter. */
+    pio_set_debounce_filter(PIN_PUSHBUTTON_WAKEUP_PIO,
+                            PIN_PUSHBUTTON_WAKEUP_MASK, 10);
+
+    /* Initialize PIO interrupt handlers, see PIO definition in board.h. */
+    pio_handler_set(PIN_PUSHBUTTON_WAKEUP_PIO, PIN_PUSHBUTTON_WAKEUP_ID,
+                    PIN_PUSHBUTTON_WAKEUP_MASK, PIN_PUSHBUTTON_WAKEUP_ATTR,
+                    button_handler);
+
+    /* Enable PIO controller IRQs. */
+    NVIC_EnableIRQ((IRQn_Type)PIN_PUSHBUTTON_WAKEUP_ID);
+
+    /* Enable PIO line interrupts. */
+    pio_enable_interrupt(PIN_PUSHBUTTON_WAKEUP_PIO,
+                         PIN_PUSHBUTTON_WAKEUP_MASK);
+}
+
+/**
+ * \brief Handler for button interrupt.
+ *
+ * \note This interrupt is for waking up from sleep mode or exiting from active
+ * mode.
+ */
+static inline void button_handler(uint32_t ul_id, uint32_t ul_mask)
+{
+    if (PIN_PUSHBUTTON_WAKEUP_ID == ul_id &&
+            PIN_PUSHBUTTON_WAKEUP_MASK == ul_mask) {
+        button_cb();
+    }
+}
+
+#endif