Diff: targets/hal/TARGET_Atmel/TARGET_SAM21/gpio_irq_api.c

Revision:

613:bc40b8d2aec4

Parent:

612:fba1c7dc54c0

Child:

614:9d86c2ae5de0

--- a/targets/hal/TARGET_Atmel/TARGET_SAM21/gpio_irq_api.c	Tue Aug 18 15:00:09 2015 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,150 +0,0 @@
-/* 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.
- */
-#include <stddef.h>
-#include "cmsis.h"
-
-#include "gpio_irq_api.h"
-#include "gpio_api.h"
-#include "mbed_error.h"
-#include "extint.h"
-#include "pinmap.h"
-#include "PeripheralPins.h"
-#include "port.h"
-
-#define IRQ_RISE_POSITION 1
-#define IRQ_FALL_POSITION 2
-#define CHANNEL_NUM 16
-#define pEXT_CONF(obj) (obj->config_extint_chan)
-static uint32_t channel_ids[CHANNEL_NUM] = {0};
-static gpio_irq_handler irq_handler;
-uint8_t ext_int_pins[EIC_NUMBER_OF_INTERRUPTS] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
-
-void gpio_irq(void)
-{
-    uint32_t current_channel;
-    uint32_t mask;
-    gpio_irq_event event;
-    PortGroup *port_base;
-
-    for (current_channel = 0; current_channel < EIC_NUMBER_OF_INTERRUPTS ; current_channel++) {
-        if (extint_chan_is_detected(current_channel)) {
-            extint_chan_clear_detected(current_channel);
-            port_base = (PortGroup*)port_get_group_from_gpio_pin(ext_int_pins[current_channel]);
-            mask = gpio_set(ext_int_pins[current_channel]);
-            if ((port_base->IN.reg & mask) != 0) {
-                event = IRQ_RISE;
-            } else {
-                event = IRQ_FALL;
-            }
-            irq_handler(channel_ids[current_channel], event);
-        }
-    }
-}
-
-int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
-{
-    MBED_ASSERT(obj);
-    if (pin == NC)
-        return -1;
-
-    IRQn_Type irq_n = (IRQn_Type)0;
-    uint32_t vector = 0;
-    int int_channel = 0;
-    irq_handler = handler;  // assuming the usage of these apis in mbed layer only
-
-    obj->pin = pin;
-
-    extint_chan_get_config_defaults(&pEXT_CONF(obj));
-    pEXT_CONF(obj).gpio_pin           = (uint32_t)pin;
-    pEXT_CONF(obj).gpio_pin_mux       = 0;   // mux setting for ext int is 0
-    pEXT_CONF(obj).gpio_pin_pull      = EXTINT_PULL_UP;
-    pEXT_CONF(obj).detection_criteria = EXTINT_DETECT_NONE;
-
-    int_channel = pinmap_find_peripheral(pin, PinMap_EXTINT);
-    if (int_channel == NC) {
-        return -1;
-    }
-    extint_chan_set_config(int_channel, &pEXT_CONF(obj));
-    ext_int_pins[int_channel] = pin;
-
-    irq_n = EIC_IRQn;
-    vector = (uint32_t)gpio_irq;
-    NVIC_SetVector(irq_n, vector);
-    NVIC_EnableIRQ(irq_n);
-    obj->ch = int_channel;
-    channel_ids[int_channel] = id;
-
-    return 0;
-}
-
-void gpio_irq_free(gpio_irq_t *obj)
-{
-    MBED_ASSERT(obj);
-    Eic *const eic = _extint_get_eic_from_channel(obj->ch);
-    channel_ids[obj->ch] = 0;
-    eic->INTENCLR.reg = (1UL << obj->ch);
-}
-
-void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
-{
-    MBED_ASSERT(obj);
-    Eic *const eic = _extint_get_eic_from_channel(obj->ch);
-    if (enable) {
-        if (event == IRQ_RISE) {
-            obj->irqmask |= IRQ_RISE_POSITION;
-        } else if (event == IRQ_FALL) {
-            obj->irqmask |= IRQ_FALL_POSITION;
-        }
-        eic->INTENSET.reg = (1UL << obj->ch);
-    } else {
-        if (event == IRQ_RISE) {
-            obj->irqmask &= ~IRQ_RISE_POSITION;
-        } else if (event == IRQ_FALL) {
-            obj->irqmask &= ~IRQ_FALL_POSITION;
-        }
-    }
-
-    if (obj->irqmask == (IRQ_RISE_POSITION | IRQ_FALL_POSITION)) {
-        pEXT_CONF(obj).detection_criteria = EXTINT_DETECT_BOTH;
-    } else if (obj->irqmask == IRQ_RISE_POSITION) {
-        pEXT_CONF(obj).detection_criteria = EXTINT_DETECT_RISING;
-    } else if (obj->irqmask == IRQ_FALL_POSITION) {
-        pEXT_CONF(obj).detection_criteria = EXTINT_DETECT_FALLING;
-    } else {
-        pEXT_CONF(obj).detection_criteria = EXTINT_DETECT_NONE;
-        eic->INTENCLR.reg = (1UL << obj->ch);
-    }
-
-    extint_chan_set_config(obj->ch, &pEXT_CONF(obj));
-}
-
-void gpio_irq_enable(gpio_irq_t *obj)
-{
-    MBED_ASSERT(obj);
-    Eic *const eic = _extint_get_eic_from_channel(obj->ch);
-    NVIC_EnableIRQ(EIC_IRQn);
-    eic->INTENSET.reg = (1UL << obj->ch);
-}
-
-void gpio_irq_disable(gpio_irq_t *obj)
-{
-    MBED_ASSERT(obj);
-    Eic *const eic = _extint_get_eic_from_channel(obj->ch);
-    eic->INTENCLR.reg = (1UL << obj->ch);
-    if (eic->INTENSET.reg == 0) {
-        NVIC_DisableIRQ(EIC_IRQn);
-    }
-}