Daisuke Watanabe / BLE_HTM_microbit

HTM Demo of BLE with Microbit

Dependencies:   microbit

main.cpp@0:d44120452d31, 2019-08-06 (annotated)

Committer:
dw02136
Date:
Tue Aug 06 15:16:48 2019 +0000
Revision:
0:d44120452d31
Child:
1:7623f55dd990
First Issue

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dw02136 0:d44120452d31 1 /*
dw02136 0:d44120452d31 2 The MIT License (MIT)
dw02136 0:d44120452d31 3
dw02136 0:d44120452d31 4 Copyright (c) 2016 British Broadcasting Corporation.
dw02136 0:d44120452d31 5 This software is provided by Lancaster University by arrangement with the BBC.
dw02136 0:d44120452d31 6
dw02136 0:d44120452d31 7 Permission is hereby granted, free of charge, to any person obtaining a
dw02136 0:d44120452d31 8 copy of this software and associated documentation files (the "Software"),
dw02136 0:d44120452d31 9 to deal in the Software without restriction, including without limitation
dw02136 0:d44120452d31 10 the rights to use, copy, modify, merge, publish, distribute, sublicense,
dw02136 0:d44120452d31 11 and/or sell copies of the Software, and to permit persons to whom the
dw02136 0:d44120452d31 12 Software is furnished to do so, subject to the following conditions:
dw02136 0:d44120452d31 13
dw02136 0:d44120452d31 14 The above copyright notice and this permission notice shall be included in
dw02136 0:d44120452d31 15 all copies or substantial portions of the Software.
dw02136 0:d44120452d31 16
dw02136 0:d44120452d31 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dw02136 0:d44120452d31 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dw02136 0:d44120452d31 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
dw02136 0:d44120452d31 20 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dw02136 0:d44120452d31 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
dw02136 0:d44120452d31 22 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
dw02136 0:d44120452d31 23 DEALINGS IN THE SOFTWARE.
dw02136 0:d44120452d31 24 */
dw02136 0:d44120452d31 25
dw02136 0:d44120452d31 26 #include "MicroBit.h"
dw02136 0:d44120452d31 27
dw02136 0:d44120452d31 28 const static char DEVICE_NAME[] = "MY_MICROBIT";
dw02136 0:d44120452d31 29 static volatile bool triggerSensorPolling = false;
dw02136 0:d44120452d31 30
dw02136 0:d44120452d31 31 MicroBit uBit;
dw02136 0:d44120452d31 32 Ticker ticker;
dw02136 0:d44120452d31 33 Serial pc(USBTX, USBRX);
dw02136 0:d44120452d31 34
dw02136 0:d44120452d31 35 static Gap::ConnectionParams_t connectionParams;
dw02136 0:d44120452d31 36
dw02136 0:d44120452d31 37 /* Battery Level Service */
dw02136 0:d44120452d31 38 uint8_t batt = 100; /* Battery level */
dw02136 0:d44120452d31 39 GattCharacteristic battLevel ( GattCharacteristic::UUID_BATTERY_LEVEL_CHAR,
dw02136 0:d44120452d31 40 (uint8_t *)batt, 1, 1,
dw02136 0:d44120452d31 41 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
dw02136 0:d44120452d31 42 GattCharacteristic *battChars[] = {&battLevel, };
dw02136 0:d44120452d31 43 GattService battService(GattService::UUID_BATTERY_SERVICE, battChars,
dw02136 0:d44120452d31 44 sizeof(battChars) / sizeof(GattCharacteristic *));
dw02136 0:d44120452d31 45 uint16_t uuid16_list[] = {GattService::UUID_BATTERY_SERVICE};
dw02136 0:d44120452d31 46
dw02136 0:d44120452d31 47 void onConnectionCallback(const Gap::ConnectionCallbackParams_t *params)
dw02136 0:d44120452d31 48 {
dw02136 0:d44120452d31 49 pc.printf("connected. Got handle %u\r\n", params->handle);
dw02136 0:d44120452d31 50
dw02136 0:d44120452d31 51 connectionParams.slaveLatency = 1;
dw02136 0:d44120452d31 52 if (uBit.ble->gap().updateConnectionParams(params->handle, &connectionParams) != BLE_ERROR_NONE) {
dw02136 0:d44120452d31 53 pc.printf("failed to update connection paramter\r\n");
dw02136 0:d44120452d31 54 }
dw02136 0:d44120452d31 55 }
dw02136 0:d44120452d31 56
dw02136 0:d44120452d31 57 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
dw02136 0:d44120452d31 58 {
dw02136 0:d44120452d31 59 pc.printf("Disconnected handle %u, reason %u\r\n", params->handle, params->reason);
dw02136 0:d44120452d31 60 pc.printf("Restarting the advertising process\r\n");
dw02136 0:d44120452d31 61
dw02136 0:d44120452d31 62 uBit.ble->gap().startAdvertising();
dw02136 0:d44120452d31 63 }
dw02136 0:d44120452d31 64
dw02136 0:d44120452d31 65 void periodicCallback(void)
dw02136 0:d44120452d31 66 {
dw02136 0:d44120452d31 67 triggerSensorPolling = true;
dw02136 0:d44120452d31 68 }
dw02136 0:d44120452d31 69
dw02136 0:d44120452d31 70 int main()
dw02136 0:d44120452d31 71 {
dw02136 0:d44120452d31 72 // Initialise the micro:bit runtime.
dw02136 0:d44120452d31 73 pc.printf("Initialising MicroBit\r\n");
dw02136 0:d44120452d31 74 uBit.ble = new BLEDevice();
dw02136 0:d44120452d31 75 uBit.init();
dw02136 0:d44120452d31 76 uBit.ble->init();
dw02136 0:d44120452d31 77 pc.printf("Init done\r\n");
dw02136 0:d44120452d31 78
dw02136 0:d44120452d31 79 uBit.ble->gap().onConnection(onConnectionCallback);
dw02136 0:d44120452d31 80 uBit.ble->gap().onDisconnection(disconnectionCallback);
dw02136 0:d44120452d31 81
dw02136 0:d44120452d31 82 /* setup advertising */
dw02136 0:d44120452d31 83 uBit.ble->gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
dw02136 0:d44120452d31 84 uBit.ble->gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t*)uuid16_list, sizeof(uuid16_list));
dw02136 0:d44120452d31 85 uBit.ble->gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_REMOTE_CONTROL);
dw02136 0:d44120452d31 86 uBit.ble->accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
dw02136 0:d44120452d31 87 uBit.ble->gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
dw02136 0:d44120452d31 88 uBit.ble->setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
dw02136 0:d44120452d31 89 uBit.ble->startAdvertising();
dw02136 0:d44120452d31 90 pc.printf("Start Advertising\r\n");
dw02136 0:d44120452d31 91
dw02136 0:d44120452d31 92 uBit.ble->gattServer().addService(battService);
dw02136 0:d44120452d31 93
dw02136 0:d44120452d31 94 ticker.attach(periodicCallback, 1);
dw02136 0:d44120452d31 95
dw02136 0:d44120452d31 96 // Insert your code here!
dw02136 0:d44120452d31 97 while(1)
dw02136 0:d44120452d31 98 {
dw02136 0:d44120452d31 99 //uBit.display.scroll("ADV");
dw02136 0:d44120452d31 100 if (triggerSensorPolling) {
dw02136 0:d44120452d31 101 triggerSensorPolling = false;
dw02136 0:d44120452d31 102
dw02136 0:d44120452d31 103 // Decrement the battery level.
dw02136 0:d44120452d31 104 batt <=50 ? batt=100 : batt--;
dw02136 0:d44120452d31 105 pc.printf("Batt is %u\r\n", batt);
dw02136 0:d44120452d31 106
dw02136 0:d44120452d31 107 uBit.ble->gattServer().write(battLevel.getValueAttribute().getHandle(), (uint8_t *)&batt, sizeof(batt)); //Mod
dw02136 0:d44120452d31 108 } else {
dw02136 0:d44120452d31 109 uBit.ble->waitForEvent();
dw02136 0:d44120452d31 110 }
dw02136 0:d44120452d31 111 }
dw02136 0:d44120452d31 112
dw02136 0:d44120452d31 113 // If main exits, there may still be other fibers running or registered event handlers etc.
dw02136 0:d44120452d31 114 // Simply release this fiber, which will mean we enter the scheduler. Worse case, we then
dw02136 0:d44120452d31 115 // sit in the idle task forever, in a power efficient sleep.
dw02136 0:d44120452d31 116 //release_fiber();
dw02136 0:d44120452d31 117 }
dw02136 0:d44120452d31 118