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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

hal/mbed_ticker_api.c@1:f30bdcd2b33b, 2017-02-27 (annotated)

Committer:
jacobjohnson
Date:
Mon Feb 27 17:45:05 2017 +0000
Revision:
1:f30bdcd2b33b
Parent:
0:098463de4c5d 
changed the inputscale from 1 to 7 in analogin_api.c.  This will need to be changed later, and accessed from the main level, but for now this allows the  adc to read a value from 0 to 3.7V, instead of just up to 1V.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 * Copyright (c) 2015 ARM Limited
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Licensed under the Apache License, Version 2.0 (the "License");
group-onsemi 0:098463de4c5d 5 * you may not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 6 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 7 *
group-onsemi 0:098463de4c5d 8 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 9 *
group-onsemi 0:098463de4c5d 10 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 11 * distributed under the License is distributed on an "AS IS" BASIS,
group-onsemi 0:098463de4c5d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 13 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 14 * limitations under the License.
group-onsemi 0:098463de4c5d 15 */
group-onsemi 0:098463de4c5d 16 #include <stddef.h>
group-onsemi 0:098463de4c5d 17 #include "hal/ticker_api.h"
group-onsemi 0:098463de4c5d 18 #include "platform/critical.h"
group-onsemi 0:098463de4c5d 19
group-onsemi 0:098463de4c5d 20 void ticker_set_handler(const ticker_data_t *const data, ticker_event_handler handler) {
group-onsemi 0:098463de4c5d 21 data->interface->init();
group-onsemi 0:098463de4c5d 22
group-onsemi 0:098463de4c5d 23 data->queue->event_handler = handler;
group-onsemi 0:098463de4c5d 24 }
group-onsemi 0:098463de4c5d 25
group-onsemi 0:098463de4c5d 26 void ticker_irq_handler(const ticker_data_t *const data) {
group-onsemi 0:098463de4c5d 27 data->interface->clear_interrupt();
group-onsemi 0:098463de4c5d 28
group-onsemi 0:098463de4c5d 29 /* Go through all the pending TimerEvents */
group-onsemi 0:098463de4c5d 30 while (1) {
group-onsemi 0:098463de4c5d 31 if (data->queue->head == NULL) {
group-onsemi 0:098463de4c5d 32 // There are no more TimerEvents left, so disable matches.
group-onsemi 0:098463de4c5d 33 data->interface->disable_interrupt();
group-onsemi 0:098463de4c5d 34 return;
group-onsemi 0:098463de4c5d 35 }
group-onsemi 0:098463de4c5d 36
group-onsemi 0:098463de4c5d 37 if ((int)(data->queue->head->timestamp - data->interface->read()) <= 0) {
group-onsemi 0:098463de4c5d 38 // This event was in the past:
group-onsemi 0:098463de4c5d 39 // point to the following one and execute its handler
group-onsemi 0:098463de4c5d 40 ticker_event_t *p = data->queue->head;
group-onsemi 0:098463de4c5d 41 data->queue->head = data->queue->head->next;
group-onsemi 0:098463de4c5d 42 if (data->queue->event_handler != NULL) {
group-onsemi 0:098463de4c5d 43 (*data->queue->event_handler)(p->id); // NOTE: the handler can set new events
group-onsemi 0:098463de4c5d 44 }
group-onsemi 0:098463de4c5d 45 /* Note: We continue back to examining the head because calling the
group-onsemi 0:098463de4c5d 46 * event handler may have altered the chain of pending events. */
group-onsemi 0:098463de4c5d 47 } else {
group-onsemi 0:098463de4c5d 48 // This event and the following ones in the list are in the future:
group-onsemi 0:098463de4c5d 49 // set it as next interrupt and return
group-onsemi 0:098463de4c5d 50 data->interface->set_interrupt(data->queue->head->timestamp);
group-onsemi 0:098463de4c5d 51 return;
group-onsemi 0:098463de4c5d 52 }
group-onsemi 0:098463de4c5d 53 }
group-onsemi 0:098463de4c5d 54 }
group-onsemi 0:098463de4c5d 55
group-onsemi 0:098463de4c5d 56 void ticker_insert_event(const ticker_data_t *const data, ticker_event_t *obj, timestamp_t timestamp, uint32_t id) {
group-onsemi 0:098463de4c5d 57 /* disable interrupts for the duration of the function */
group-onsemi 0:098463de4c5d 58 core_util_critical_section_enter();
group-onsemi 0:098463de4c5d 59
group-onsemi 0:098463de4c5d 60 // initialise our data
group-onsemi 0:098463de4c5d 61 obj->timestamp = timestamp;
group-onsemi 0:098463de4c5d 62 obj->id = id;
group-onsemi 0:098463de4c5d 63
group-onsemi 0:098463de4c5d 64 /* Go through the list until we either reach the end, or find
group-onsemi 0:098463de4c5d 65 an element this should come before (which is possibly the
group-onsemi 0:098463de4c5d 66 head). */
group-onsemi 0:098463de4c5d 67 ticker_event_t *prev = NULL, *p = data->queue->head;
group-onsemi 0:098463de4c5d 68 while (p != NULL) {
group-onsemi 0:098463de4c5d 69 /* check if we come before p */
group-onsemi 0:098463de4c5d 70 if ((int)(timestamp - p->timestamp) < 0) {
group-onsemi 0:098463de4c5d 71 break;
group-onsemi 0:098463de4c5d 72 }
group-onsemi 0:098463de4c5d 73 /* go to the next element */
group-onsemi 0:098463de4c5d 74 prev = p;
group-onsemi 0:098463de4c5d 75 p = p->next;
group-onsemi 0:098463de4c5d 76 }
group-onsemi 0:098463de4c5d 77 /* if prev is NULL we're at the head */
group-onsemi 0:098463de4c5d 78 if (prev == NULL) {
group-onsemi 0:098463de4c5d 79 data->queue->head = obj;
group-onsemi 0:098463de4c5d 80 data->interface->set_interrupt(timestamp);
group-onsemi 0:098463de4c5d 81 } else {
group-onsemi 0:098463de4c5d 82 prev->next = obj;
group-onsemi 0:098463de4c5d 83 }
group-onsemi 0:098463de4c5d 84 /* if we're at the end p will be NULL, which is correct */
group-onsemi 0:098463de4c5d 85 obj->next = p;
group-onsemi 0:098463de4c5d 86
group-onsemi 0:098463de4c5d 87 core_util_critical_section_exit();
group-onsemi 0:098463de4c5d 88 }
group-onsemi 0:098463de4c5d 89
group-onsemi 0:098463de4c5d 90 void ticker_remove_event(const ticker_data_t *const data, ticker_event_t *obj) {
group-onsemi 0:098463de4c5d 91 core_util_critical_section_enter();
group-onsemi 0:098463de4c5d 92
group-onsemi 0:098463de4c5d 93 // remove this object from the list
group-onsemi 0:098463de4c5d 94 if (data->queue->head == obj) {
group-onsemi 0:098463de4c5d 95 // first in the list, so just drop me
group-onsemi 0:098463de4c5d 96 data->queue->head = obj->next;
group-onsemi 0:098463de4c5d 97 if (data->queue->head == NULL) {
group-onsemi 0:098463de4c5d 98 data->interface->disable_interrupt();
group-onsemi 0:098463de4c5d 99 } else {
group-onsemi 0:098463de4c5d 100 data->interface->set_interrupt(data->queue->head->timestamp);
group-onsemi 0:098463de4c5d 101 }
group-onsemi 0:098463de4c5d 102 } else {
group-onsemi 0:098463de4c5d 103 // find the object before me, then drop me
group-onsemi 0:098463de4c5d 104 ticker_event_t* p = data->queue->head;
group-onsemi 0:098463de4c5d 105 while (p != NULL) {
group-onsemi 0:098463de4c5d 106 if (p->next == obj) {
group-onsemi 0:098463de4c5d 107 p->next = obj->next;
group-onsemi 0:098463de4c5d 108 break;
group-onsemi 0:098463de4c5d 109 }
group-onsemi 0:098463de4c5d 110 p = p->next;
group-onsemi 0:098463de4c5d 111 }
group-onsemi 0:098463de4c5d 112 }
group-onsemi 0:098463de4c5d 113
group-onsemi 0:098463de4c5d 114 core_util_critical_section_exit();
group-onsemi 0:098463de4c5d 115 }
group-onsemi 0:098463de4c5d 116
group-onsemi 0:098463de4c5d 117 timestamp_t ticker_read(const ticker_data_t *const data)
group-onsemi 0:098463de4c5d 118 {
group-onsemi 0:098463de4c5d 119 return data->interface->read();
group-onsemi 0:098463de4c5d 120 }
group-onsemi 0:098463de4c5d 121
group-onsemi 0:098463de4c5d 122 int ticker_get_next_timestamp(const ticker_data_t *const data, timestamp_t *timestamp)
group-onsemi 0:098463de4c5d 123 {
group-onsemi 0:098463de4c5d 124 int ret = 0;
group-onsemi 0:098463de4c5d 125
group-onsemi 0:098463de4c5d 126 /* if head is NULL, there are no pending events */
group-onsemi 0:098463de4c5d 127 core_util_critical_section_enter();
group-onsemi 0:098463de4c5d 128 if (data->queue->head != NULL) {
group-onsemi 0:098463de4c5d 129 *timestamp = data->queue->head->timestamp;
group-onsemi 0:098463de4c5d 130 ret = 1;
group-onsemi 0:098463de4c5d 131 }
group-onsemi 0:098463de4c5d 132 core_util_critical_section_exit();
group-onsemi 0:098463de4c5d 133
group-onsemi 0:098463de4c5d 134 return ret;
group-onsemi 0:098463de4c5d 135 }