Tami Farber / microbit-dal

Revised to disable BLE for radio communication as needed.

Dependencies:   BLE_API nRF51822 mbed-dev-bin

Dependents:   microbit

inc/drivers/MicroBitRadioEvent.h@74:26717338739d, 2019-11-26 (annotated)

Committer:
tsfarber
Date:
Tue Nov 26 04:12:46 2019 +0000
Revision:
74:26717338739d
Parent:
1:8aa5cdb4ab67 
This program combines samples programs radio TX and radio RX so that both units can send or receive depending on which unit's buttons are pressed. Tested successfully. MicroBitConfig.h has been edited to disable BLE.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jonathan Austin 1:8aa5cdb4ab67 1 /*
Jonathan Austin 1:8aa5cdb4ab67 2 The MIT License (MIT)
Jonathan Austin 1:8aa5cdb4ab67 3
Jonathan Austin 1:8aa5cdb4ab67 4 Copyright (c) 2016 British Broadcasting Corporation.
Jonathan Austin 1:8aa5cdb4ab67 5 This software is provided by Lancaster University by arrangement with the BBC.
Jonathan Austin 1:8aa5cdb4ab67 6
Jonathan Austin 1:8aa5cdb4ab67 7 Permission is hereby granted, free of charge, to any person obtaining a
Jonathan Austin 1:8aa5cdb4ab67 8 copy of this software and associated documentation files (the "Software"),
Jonathan Austin 1:8aa5cdb4ab67 9 to deal in the Software without restriction, including without limitation
Jonathan Austin 1:8aa5cdb4ab67 10 the rights to use, copy, modify, merge, publish, distribute, sublicense,
Jonathan Austin 1:8aa5cdb4ab67 11 and/or sell copies of the Software, and to permit persons to whom the
Jonathan Austin 1:8aa5cdb4ab67 12 Software is furnished to do so, subject to the following conditions:
Jonathan Austin 1:8aa5cdb4ab67 13
Jonathan Austin 1:8aa5cdb4ab67 14 The above copyright notice and this permission notice shall be included in
Jonathan Austin 1:8aa5cdb4ab67 15 all copies or substantial portions of the Software.
Jonathan Austin 1:8aa5cdb4ab67 16
Jonathan Austin 1:8aa5cdb4ab67 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Jonathan Austin 1:8aa5cdb4ab67 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Jonathan Austin 1:8aa5cdb4ab67 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
Jonathan Austin 1:8aa5cdb4ab67 20 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Jonathan Austin 1:8aa5cdb4ab67 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
Jonathan Austin 1:8aa5cdb4ab67 22 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
Jonathan Austin 1:8aa5cdb4ab67 23 DEALINGS IN THE SOFTWARE.
Jonathan Austin 1:8aa5cdb4ab67 24 */
Jonathan Austin 1:8aa5cdb4ab67 25
Jonathan Austin 1:8aa5cdb4ab67 26 #ifndef MICROBIT_RADIO_EVENT_H
Jonathan Austin 1:8aa5cdb4ab67 27 #define MICROBIT_RADIO_EVENT_H
Jonathan Austin 1:8aa5cdb4ab67 28
Jonathan Austin 1:8aa5cdb4ab67 29 #include "mbed.h"
Jonathan Austin 1:8aa5cdb4ab67 30 #include "MicroBitConfig.h"
Jonathan Austin 1:8aa5cdb4ab67 31 #include "MicroBitRadio.h"
Jonathan Austin 1:8aa5cdb4ab67 32 #include "EventModel.h"
Jonathan Austin 1:8aa5cdb4ab67 33
Jonathan Austin 1:8aa5cdb4ab67 34 /**
Jonathan Austin 1:8aa5cdb4ab67 35 * Provides a simple broadcast radio abstraction, built upon the raw nrf51822 RADIO module.
Jonathan Austin 1:8aa5cdb4ab67 36 *
Jonathan Austin 1:8aa5cdb4ab67 37 * This class provides the ability to extend the micro:bit's default EventModel to other micro:bits in the vicinity,
Jonathan Austin 1:8aa5cdb4ab67 38 * in a very similar way to the MicroBitEventService for BLE interfaces.
Jonathan Austin 1:8aa5cdb4ab67 39 *
Jonathan Austin 1:8aa5cdb4ab67 40 * It is envisaged that this would provide the basis for children to experiment with building their own, simple,
Jonathan Austin 1:8aa5cdb4ab67 41 * custom asynchronous events and actions.
Jonathan Austin 1:8aa5cdb4ab67 42 *
Jonathan Austin 1:8aa5cdb4ab67 43 * @note This API does not contain any form of encryption, authentication or authorisation. Its purpose is solely for use as a
Jonathan Austin 1:8aa5cdb4ab67 44 * teaching aid to demonstrate how simple communications operates, and to provide a sandpit through which learning can take place.
Jonathan Austin 1:8aa5cdb4ab67 45 * For serious applications, BLE should be considered a substantially more secure alternative.
Jonathan Austin 1:8aa5cdb4ab67 46 */
Jonathan Austin 1:8aa5cdb4ab67 47 class MicroBitRadioEvent
Jonathan Austin 1:8aa5cdb4ab67 48 {
Jonathan Austin 1:8aa5cdb4ab67 49 bool suppressForwarding; // A private flag used to prevent event forwarding loops.
Jonathan Austin 1:8aa5cdb4ab67 50 MicroBitRadio &radio; // A reference to the underlying radio module to use.
Jonathan Austin 1:8aa5cdb4ab67 51
Jonathan Austin 1:8aa5cdb4ab67 52 public:
Jonathan Austin 1:8aa5cdb4ab67 53
Jonathan Austin 1:8aa5cdb4ab67 54 /**
Jonathan Austin 1:8aa5cdb4ab67 55 * Constructor.
Jonathan Austin 1:8aa5cdb4ab67 56 *
Jonathan Austin 1:8aa5cdb4ab67 57 * Creates an instance of MicroBitRadioEvent which offers the ability to extend
Jonathan Austin 1:8aa5cdb4ab67 58 * the micro:bit's default EventModel to other micro:bits in the vicinity.
Jonathan Austin 1:8aa5cdb4ab67 59 *
Jonathan Austin 1:8aa5cdb4ab67 60 * @param r The underlying radio module used to send and receive data.
Jonathan Austin 1:8aa5cdb4ab67 61 */
Jonathan Austin 1:8aa5cdb4ab67 62 MicroBitRadioEvent(MicroBitRadio &r);
Jonathan Austin 1:8aa5cdb4ab67 63
Jonathan Austin 1:8aa5cdb4ab67 64 /**
Jonathan Austin 1:8aa5cdb4ab67 65 * Associates the given event with the radio channel.
Jonathan Austin 1:8aa5cdb4ab67 66 *
Jonathan Austin 1:8aa5cdb4ab67 67 * Once registered, all events matching the given registration sent to this micro:bit's
Jonathan Austin 1:8aa5cdb4ab67 68 * default EventModel will be automatically retransmitted on the radio.
Jonathan Austin 1:8aa5cdb4ab67 69 *
Jonathan Austin 1:8aa5cdb4ab67 70 * @param id The id of the event to register.
Jonathan Austin 1:8aa5cdb4ab67 71 *
Jonathan Austin 1:8aa5cdb4ab67 72 * @param value the value of the event to register.
Jonathan Austin 1:8aa5cdb4ab67 73 *
Jonathan Austin 1:8aa5cdb4ab67 74 * @return MICROBIT_OK on success, or MICROBIT_NO_RESOURCES if no default EventModel is available.
Jonathan Austin 1:8aa5cdb4ab67 75 *
Jonathan Austin 1:8aa5cdb4ab67 76 * @note The wildcards MICROBIT_ID_ANY and MICROBIT_EVT_ANY can also be in place of the
Jonathan Austin 1:8aa5cdb4ab67 77 * id and value fields.
Jonathan Austin 1:8aa5cdb4ab67 78 */
Jonathan Austin 1:8aa5cdb4ab67 79 int listen(uint16_t id, uint16_t value);
Jonathan Austin 1:8aa5cdb4ab67 80
Jonathan Austin 1:8aa5cdb4ab67 81 /**
Jonathan Austin 1:8aa5cdb4ab67 82 * Associates the given event with the radio channel.
Jonathan Austin 1:8aa5cdb4ab67 83 *
Jonathan Austin 1:8aa5cdb4ab67 84 * Once registered, all events matching the given registration sent to the given
Jonathan Austin 1:8aa5cdb4ab67 85 * EventModel will be automatically retransmitted on the radio.
Jonathan Austin 1:8aa5cdb4ab67 86 *
Jonathan Austin 1:8aa5cdb4ab67 87 * @param id The id of the events to register.
Jonathan Austin 1:8aa5cdb4ab67 88 *
Jonathan Austin 1:8aa5cdb4ab67 89 * @param value the value of the event to register.
Jonathan Austin 1:8aa5cdb4ab67 90 *
Jonathan Austin 1:8aa5cdb4ab67 91 * @param eventBus The EventModel to listen for events on.
Jonathan Austin 1:8aa5cdb4ab67 92 *
Jonathan Austin 1:8aa5cdb4ab67 93 * @return MICROBIT_OK on success.
Jonathan Austin 1:8aa5cdb4ab67 94 *
Jonathan Austin 1:8aa5cdb4ab67 95 * @note The wildcards MICROBIT_ID_ANY and MICROBIT_EVT_ANY can also be in place of the
Jonathan Austin 1:8aa5cdb4ab67 96 * id and value fields.
Jonathan Austin 1:8aa5cdb4ab67 97 */
Jonathan Austin 1:8aa5cdb4ab67 98 int listen(uint16_t id, uint16_t value, EventModel &eventBus);
Jonathan Austin 1:8aa5cdb4ab67 99
Jonathan Austin 1:8aa5cdb4ab67 100 /**
Jonathan Austin 1:8aa5cdb4ab67 101 * Disassociates the given event with the radio channel.
Jonathan Austin 1:8aa5cdb4ab67 102 *
Jonathan Austin 1:8aa5cdb4ab67 103 * @param id The id of the events to deregister.
Jonathan Austin 1:8aa5cdb4ab67 104 *
Jonathan Austin 1:8aa5cdb4ab67 105 * @param value The value of the event to deregister.
Jonathan Austin 1:8aa5cdb4ab67 106 *
Jonathan Austin 1:8aa5cdb4ab67 107 * @return MICROBIT_OK on success, or MICROBIT_INVALID_PARAMETER if the default message bus does not exist.
Jonathan Austin 1:8aa5cdb4ab67 108 *
Jonathan Austin 1:8aa5cdb4ab67 109 * @note MICROBIT_EVT_ANY can be used to deregister all event values matching the given id.
Jonathan Austin 1:8aa5cdb4ab67 110 */
Jonathan Austin 1:8aa5cdb4ab67 111 int ignore(uint16_t id, uint16_t value);
Jonathan Austin 1:8aa5cdb4ab67 112
Jonathan Austin 1:8aa5cdb4ab67 113 /**
Jonathan Austin 1:8aa5cdb4ab67 114 * Disassociates the given events with the radio channel.
Jonathan Austin 1:8aa5cdb4ab67 115 *
Jonathan Austin 1:8aa5cdb4ab67 116 * @param id The id of the events to deregister.
Jonathan Austin 1:8aa5cdb4ab67 117 *
Jonathan Austin 1:8aa5cdb4ab67 118 * @param value The value of the event to deregister.
Jonathan Austin 1:8aa5cdb4ab67 119 *
Jonathan Austin 1:8aa5cdb4ab67 120 * @param eventBus The EventModel to deregister on.
Jonathan Austin 1:8aa5cdb4ab67 121 *
Jonathan Austin 1:8aa5cdb4ab67 122 * @return MICROBIT_OK on success.
Jonathan Austin 1:8aa5cdb4ab67 123 *
Jonathan Austin 1:8aa5cdb4ab67 124 * @note MICROBIT_EVT_ANY can be used to deregister all event values matching the given id.
Jonathan Austin 1:8aa5cdb4ab67 125 */
Jonathan Austin 1:8aa5cdb4ab67 126 int ignore(uint16_t id, uint16_t value, EventModel &eventBus);
Jonathan Austin 1:8aa5cdb4ab67 127
Jonathan Austin 1:8aa5cdb4ab67 128 /**
Jonathan Austin 1:8aa5cdb4ab67 129 * Protocol handler callback. This is called when the radio receives a packet marked as using the event protocol.
Jonathan Austin 1:8aa5cdb4ab67 130 *
Jonathan Austin 1:8aa5cdb4ab67 131 * This function process this packet, and fires the event contained inside onto the default EventModel.
Jonathan Austin 1:8aa5cdb4ab67 132 */
Jonathan Austin 1:8aa5cdb4ab67 133 void packetReceived();
Jonathan Austin 1:8aa5cdb4ab67 134
Jonathan Austin 1:8aa5cdb4ab67 135 /**
Jonathan Austin 1:8aa5cdb4ab67 136 * Event handler callback. This is called whenever an event is received matching one of those registered through
Jonathan Austin 1:8aa5cdb4ab67 137 * the registerEvent() method described above. Upon receiving such an event, it is wrapped into
Jonathan Austin 1:8aa5cdb4ab67 138 * a radio packet and transmitted to any other micro:bits in the same group.
Jonathan Austin 1:8aa5cdb4ab67 139 */
Jonathan Austin 1:8aa5cdb4ab67 140 void eventReceived(MicroBitEvent e);
Jonathan Austin 1:8aa5cdb4ab67 141 };
Jonathan Austin 1:8aa5cdb4ab67 142
Jonathan Austin 1:8aa5cdb4ab67 143 #endif