Diff: common/ticker_api.c

Revision:

145:ce498f071de9

Parent:

144:ef7eb2e8f9f7

Child:

146:11f9a9a04805

--- a/common/ticker_api.c	Fri Sep 02 15:07:44 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,135 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2015 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 "ticker_api.h"
-#include "cmsis.h"
-
-void ticker_set_handler(const ticker_data_t *const data, ticker_event_handler handler) {
-    data->interface->init();
-
-    data->queue->event_handler = handler;
-}
-
-void ticker_irq_handler(const ticker_data_t *const data) {
-    data->interface->clear_interrupt();
-
-    /* Go through all the pending TimerEvents */
-    while (1) {
-        if (data->queue->head == NULL) {
-            // There are no more TimerEvents left, so disable matches.
-            data->interface->disable_interrupt();
-            return;
-        }
-
-        if ((int)(data->queue->head->timestamp - data->interface->read()) <= 0) {
-            // This event was in the past:
-            //      point to the following one and execute its handler
-            ticker_event_t *p = data->queue->head;
-            data->queue->head = data->queue->head->next;
-            if (data->queue->event_handler != NULL) {
-                (*data->queue->event_handler)(p->id); // NOTE: the handler can set new events
-            }
-            /* Note: We continue back to examining the head because calling the
-             * event handler may have altered the chain of pending events. */
-        } else {
-            // This event and the following ones in the list are in the future:
-            //      set it as next interrupt and return
-            data->interface->set_interrupt(data->queue->head->timestamp);
-            return;
-        }
-    }
-}
-
-void ticker_insert_event(const ticker_data_t *const data, ticker_event_t *obj, timestamp_t timestamp, uint32_t id) {
-    /* disable interrupts for the duration of the function */
-    __disable_irq();
-
-    // initialise our data
-    obj->timestamp = timestamp;
-    obj->id = id;
-
-    /* Go through the list until we either reach the end, or find
-       an element this should come before (which is possibly the
-       head). */
-    ticker_event_t *prev = NULL, *p = data->queue->head;
-    while (p != NULL) {
-        /* check if we come before p */
-        if ((int)(timestamp - p->timestamp) < 0) {
-            break;
-        }
-        /* go to the next element */
-        prev = p;
-        p = p->next;
-    }
-    /* if prev is NULL we're at the head */
-    if (prev == NULL) {
-        data->queue->head = obj;
-        data->interface->set_interrupt(timestamp);
-    } else {
-        prev->next = obj;
-    }
-    /* if we're at the end p will be NULL, which is correct */
-    obj->next = p;
-
-    __enable_irq();
-}
-
-void ticker_remove_event(const ticker_data_t *const data, ticker_event_t *obj) {
-    __disable_irq();
-
-    // remove this object from the list
-    if (data->queue->head == obj) {
-        // first in the list, so just drop me
-        data->queue->head = obj->next;
-        if (data->queue->head == NULL) {
-            data->interface->disable_interrupt();
-        } else {
-            data->interface->set_interrupt(data->queue->head->timestamp);
-        }
-    } else {
-        // find the object before me, then drop me
-        ticker_event_t* p = data->queue->head;
-        while (p != NULL) {
-            if (p->next == obj) {
-                p->next = obj->next;
-                break;
-            }
-            p = p->next;
-        }
-    }
-
-    __enable_irq();
-}
-
-timestamp_t ticker_read(const ticker_data_t *const data)
-{
-    return data->interface->read();
-}
-
-int ticker_get_next_timestamp(const ticker_data_t *const data, timestamp_t *timestamp)
-{
-    int ret = 0;
-
-    /* if head is NULL, there are no pending events */
-    __disable_irq();
-    if (data->queue->head != NULL) {
-        *timestamp = data->queue->head->timestamp;
-        ret = 1;
-    }
-    __enable_irq();
-
-    return ret;
-}