Diff: capi/us_ticker_api.c

Revision:

9:0ce32e54c9a7

Parent:

8:4e25b8576136

Child:

10:3bc89ef62ce7

--- a/capi/us_ticker_api.c	Thu May 30 16:59:31 2013 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,114 +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 "us_ticker_api.h"
-#include "cmsis.h"
-
-static ticker_event_handler event_handler;
-static ticker_event_t *head = NULL;
-
-void us_ticker_set_handler(ticker_event_handler handler) {
-    us_ticker_init();
-    
-    event_handler = handler;
-}
-
-void us_ticker_irq_handler(void) {
-    us_ticker_clear_interrupt();
-    
-    /* Go through all the pending TimerEvents */
-    while (1) {
-        if (head == NULL) {
-            // There are no more TimerEvents left, so disable matches.
-            us_ticker_disable_interrupt();
-            return;
-        }
-        
-        if ((int)(head->timestamp - us_ticker_read()) <= 0) {
-            // This event was in the past:
-            //      point to the following one and execute its handler
-            ticker_event_t *p = head;
-            head = head->next;
-            if (event_handler != NULL) {
-                event_handler(p->id); // NOTE: the handler can set new events
-            }
-        } else {
-            // This event and the following ones in the list are in the future:
-            //      set it as next interrupt and return
-            us_ticker_set_interrupt(head->timestamp);
-            return;
-        }
-    }
-}
-
-void us_ticker_insert_event(ticker_event_t *obj, unsigned int 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 = 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) {
-        head = obj;
-        us_ticker_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 us_ticker_remove_event(ticker_event_t *obj) {
-    __disable_irq();
-    
-    // remove this object from the list
-    if (head == obj) {
-        // first in the list, so just drop me
-        head = obj->next;
-        if (obj->next != NULL) {
-            us_ticker_set_interrupt(head->timestamp);
-        }
-    } else {
-        // find the object before me, then drop me
-        ticker_event_t* p = head;
-        while (p != NULL) {
-            if (p->next == obj) {
-                p->next = obj->next;
-                break;
-            }
-            p = p->next;
-        }
-    }
-    
-    __enable_irq();
-}