Eddystone test using modified DAL
Dependencies: BLE_API mbed-dev-bin nRF51822
Dependents: microbit-eddystone
Fork of microbit-dal by
MicroBitListener.cpp
00001 /* 00002 The MIT License (MIT) 00003 00004 Copyright (c) 2016 British Broadcasting Corporation. 00005 This software is provided by Lancaster University by arrangement with the BBC. 00006 00007 Permission is hereby granted, free of charge, to any person obtaining a 00008 copy of this software and associated documentation files (the "Software"), 00009 to deal in the Software without restriction, including without limitation 00010 the rights to use, copy, modify, merge, publish, distribute, sublicense, 00011 and/or sell copies of the Software, and to permit persons to whom the 00012 Software is furnished to do so, subject to the following conditions: 00013 00014 The above copyright notice and this permission notice shall be included in 00015 all copies or substantial portions of the Software. 00016 00017 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00018 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00019 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 00020 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00021 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 00022 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 00023 DEALINGS IN THE SOFTWARE. 00024 */ 00025 00026 /** 00027 * This structure defines a MicroBitListener used to invoke functions, or member 00028 * functions if an instance of EventModel receives an event whose id and value 00029 * match this MicroBitListener's id and value. 00030 */ 00031 #include "MicroBitConfig.h" 00032 #include "MicroBitListener.h" 00033 00034 /** 00035 * Constructor. 00036 * 00037 * Create a new Message Bus Listener. 00038 * 00039 * @param id The ID of the component you want to listen to. 00040 * 00041 * @param value The event value you would like to listen to from that component 00042 * 00043 * @param handler A function pointer to call when the event is detected. 00044 * 00045 * @param flags User specified, implementation specific flags, that allow behaviour of this events listener 00046 * to be tuned. 00047 */ 00048 MicroBitListener::MicroBitListener(uint16_t id, uint16_t value, void (*handler)(MicroBitEvent), uint16_t flags) 00049 { 00050 this->id = id; 00051 this->value = value; 00052 this->cb = handler; 00053 this->cb_arg = NULL; 00054 this->flags = flags; 00055 this->next = NULL; 00056 this->evt_queue = NULL; 00057 } 00058 00059 /** 00060 * Constructor. 00061 * 00062 * Create a new Message Bus Listener, this constructor accepts an additional 00063 * parameter "arg", which is passed to the handler. 00064 * 00065 * @param id The ID of the component you want to listen to. 00066 * 00067 * @param value The event value you would like to listen to from that component 00068 * 00069 * @param handler A function pointer to call when the event is detected. 00070 * 00071 * @param arg A pointer to some data that will be given to the handler. 00072 * 00073 * @param flags User specified, implementation specific flags, that allow behaviour of this events listener 00074 * to be tuned. 00075 */ 00076 MicroBitListener::MicroBitListener(uint16_t id, uint16_t value, void (*handler)(MicroBitEvent, void *), void* arg, uint16_t flags) 00077 { 00078 this->id = id; 00079 this->value = value; 00080 this->cb_param = handler; 00081 this->cb_arg = arg; 00082 this->flags = flags | MESSAGE_BUS_LISTENER_PARAMETERISED; 00083 this->next = NULL; 00084 this->evt_queue = NULL; 00085 } 00086 00087 /** 00088 * Destructor. Ensures all resources used by this listener are freed. 00089 */ 00090 MicroBitListener::~MicroBitListener() 00091 { 00092 if(this->flags & MESSAGE_BUS_LISTENER_METHOD) 00093 delete cb_method; 00094 } 00095 00096 /** 00097 * Queues and event up to be processed. 00098 * 00099 * @param e The event to queue 00100 */ 00101 void MicroBitListener::queue(MicroBitEvent e) 00102 { 00103 int queueDepth; 00104 00105 MicroBitEventQueueItem *p = evt_queue; 00106 00107 if (evt_queue == NULL) 00108 evt_queue = new MicroBitEventQueueItem(e); 00109 else 00110 { 00111 queueDepth = 1; 00112 00113 while (p->next != NULL) 00114 { 00115 p = p->next; 00116 queueDepth++; 00117 } 00118 00119 if (queueDepth < MESSAGE_BUS_LISTENER_MAX_QUEUE_DEPTH) 00120 p->next = new MicroBitEventQueueItem(e); 00121 } 00122 }
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