Ramesh Yerraballi / Mbed 2 deprecated BLE_button

ble button A on microbit

Dependencies:   BLE_API mbed nRF51822 X_NUCLEO_IDB0XA1

Fork of BLE_HeartRate by Bluetooth Low Energy

main.cpp@81:64378603fb0d, 2018-01-26 (annotated)

Committer:
yramesh
Date:
Fri Jan 26 16:23:35 2018 +0000
Revision:
81:64378603fb0d
Parent:
80:62f38a170d5e 
bb works

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ktownsend 0:87a7fc231fae 1 /* mbed Microcontroller Library
rgrover1 67:b2d2dee347c0 2 * Copyright (c) 2006-2015 ARM Limited
ktownsend 0:87a7fc231fae 3 *
ktownsend 0:87a7fc231fae 4 * Licensed under the Apache License, Version 2.0 (the "License");
ktownsend 0:87a7fc231fae 5 * you may not use this file except in compliance with the License.
ktownsend 0:87a7fc231fae 6 * You may obtain a copy of the License at
ktownsend 0:87a7fc231fae 7 *
ktownsend 0:87a7fc231fae 8 * http://www.apache.org/licenses/LICENSE-2.0
ktownsend 0:87a7fc231fae 9 *
ktownsend 0:87a7fc231fae 10 * Unless required by applicable law or agreed to in writing, software
ktownsend 0:87a7fc231fae 11 * distributed under the License is distributed on an "AS IS" BASIS,
ktownsend 0:87a7fc231fae 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ktownsend 0:87a7fc231fae 13 * See the License for the specific language governing permissions and
ktownsend 0:87a7fc231fae 14 * limitations under the License.
ktownsend 0:87a7fc231fae 15 */
yramesh 81:64378603fb0d 16 //#defines for each edge connector pin
yramesh 81:64378603fb0d 17 #define MICROBIT_PIN_P0 P0_3 //P0 is the left most pad (ANALOG/DIGITAL) used to be P0_3 on green board
yramesh 81:64378603fb0d 18 #define MICROBIT_PIN_P1 P0_2 //P1 is the middle pad (ANALOG/DIGITAL)
yramesh 81:64378603fb0d 19 #define MICROBIT_PIN_P2 P0_1 //P2 is the right most pad (ANALOG/DIGITAL) used to be P0_1 on green board
yramesh 81:64378603fb0d 20 #define MICROBIT_PIN_P3 P0_4 //COL1 (ANALOG/DIGITAL)
yramesh 81:64378603fb0d 21 #define MICROBIT_PIN_P4 P0_5 //COL2 (ANALOG/DIGITAL)
yramesh 81:64378603fb0d 22 #define MICROBIT_PIN_P5 P0_17 //BTN_A
yramesh 81:64378603fb0d 23 #define MICROBIT_PIN_P6 P0_12 //COL9
yramesh 81:64378603fb0d 24 #define MICROBIT_PIN_P7 P0_11 //COL8
yramesh 81:64378603fb0d 25 #define MICROBIT_PIN_P8 P0_18 //PIN 18
yramesh 81:64378603fb0d 26 #define MICROBIT_PIN_P9 P0_10 //COL7
yramesh 81:64378603fb0d 27 #define MICROBIT_PIN_P10 P0_6 //COL3 (ANALOG/DIGITAL)
yramesh 81:64378603fb0d 28 #define MICROBIT_PIN_P11 P0_26 //BTN_B
yramesh 81:64378603fb0d 29 #define MICROBIT_PIN_P12 P0_20 //PIN 20
yramesh 81:64378603fb0d 30 #define MICROBIT_PIN_P13 P0_23 //SCK
yramesh 81:64378603fb0d 31 #define MICROBIT_PIN_P14 P0_22 //MISO
yramesh 81:64378603fb0d 32 #define MICROBIT_PIN_P15 P0_21 //MOSI
yramesh 81:64378603fb0d 33 #define MICROBIT_PIN_P16 P0_16 //PIN 16
yramesh 81:64378603fb0d 34 #define MICROBIT_PIN_P19 P0_0 //SCL
yramesh 81:64378603fb0d 35 #define MICROBIT_PIN_P20 P0_30 //SDA
ktownsend 0:87a7fc231fae 36 #include "mbed.h"
rgrover1 67:b2d2dee347c0 37 #include "ble/BLE.h"
yramesh 80:62f38a170d5e 38 #include "ButtonService.h"
ktownsend 0:87a7fc231fae 39
yramesh 80:62f38a170d5e 40 const static char DEVICE_NAME[] = "uBit";
yramesh 80:62f38a170d5e 41 static const uint16_t uuid16_list[] = {ButtonService::BUTTON_SERVICE_UUID};
rgrover1 39:6390604f904c 42 static volatile bool triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 43
yramesh 80:62f38a170d5e 44 DigitalOut col9(P0_12, 0);
yramesh 80:62f38a170d5e 45
yramesh 80:62f38a170d5e 46 DigitalOut heartbeat(P0_13);
rgrover1 72:99c283dfe28d 47
yramesh 81:64378603fb0d 48 DigitalIn touch(P0_3);
yramesh 80:62f38a170d5e 49 bool touchState = false;
yramesh 80:62f38a170d5e 50
yramesh 80:62f38a170d5e 51
yramesh 80:62f38a170d5e 52 InterruptIn btnA(BUTTON_A);
yramesh 80:62f38a170d5e 53 bool btnState = false;
yramesh 80:62f38a170d5e 54
yramesh 80:62f38a170d5e 55 ButtonService *buttonServicePtr;
rgrover1 72:99c283dfe28d 56
rgrover1 71:469dbde1a238 57 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
ktownsend 0:87a7fc231fae 58 {
rgrover1 73:49b6090478e2 59 BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising(); // restart advertising
rgrover1 7:daab8ba5139e 60 }
Rohit Grover 3:24e2b056d229 61
Rohit Grover 11:1d9aafee4984 62 void periodicCallback(void)
Rohit Grover 11:1d9aafee4984 63 {
yramesh 80:62f38a170d5e 64 heartbeat = !heartbeat; /* do heartbeat periodically */
rgrover1 47:430545f41113 65
rgrover1 39:6390604f904c 66 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
rgrover1 39:6390604f904c 67 * heavy-weight sensor polling from the main thread. */
rgrover1 39:6390604f904c 68 triggerSensorPolling = true;
yramesh 80:62f38a170d5e 69 if(touch.read() == 0) {
yramesh 80:62f38a170d5e 70 touchState = false;
yramesh 80:62f38a170d5e 71 }else {
yramesh 80:62f38a170d5e 72 touchState = true;
yramesh 80:62f38a170d5e 73 }
Rohit Grover 11:1d9aafee4984 74 }
Rohit Grover 11:1d9aafee4984 75
rgrover1 74:c9d58e7847c4 76 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
ktownsend 0:87a7fc231fae 77 {
rgrover1 74:c9d58e7847c4 78 BLE &ble = params->ble;
rgrover1 74:c9d58e7847c4 79 ble_error_t error = params->error;
rgrover1 74:c9d58e7847c4 80
rgrover1 72:99c283dfe28d 81 if (error != BLE_ERROR_NONE) {
rgrover1 72:99c283dfe28d 82 return;
rgrover1 72:99c283dfe28d 83 }
ktownsend 0:87a7fc231fae 84
rgrover1 65:cb76569f74f6 85 ble.gap().onDisconnection(disconnectionCallback);
ktownsend 0:87a7fc231fae 86
rgrover1 45:98c5a34b07a4 87 /* Setup primary service. */
yramesh 80:62f38a170d5e 88 buttonServicePtr = new ButtonService(ble, false /* initial value for button pressed */);
rgrover1 45:98c5a34b07a4 89
rgrover1 45:98c5a34b07a4 90
rgrover1 45:98c5a34b07a4 91 /* Setup advertising. */
rgrover1 65:cb76569f74f6 92 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
rgrover1 65:cb76569f74f6 93 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 65:cb76569f74f6 94 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
rgrover1 65:cb76569f74f6 95 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
rgrover1 65:cb76569f74f6 96 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 67:b2d2dee347c0 97 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
rgrover1 65:cb76569f74f6 98 ble.gap().startAdvertising();
rgrover1 72:99c283dfe28d 99 }
rgrover1 72:99c283dfe28d 100
yramesh 80:62f38a170d5e 101 void btn_pressed()
yramesh 80:62f38a170d5e 102 {
yramesh 80:62f38a170d5e 103 btnState = true;
yramesh 80:62f38a170d5e 104 }
yramesh 80:62f38a170d5e 105
yramesh 80:62f38a170d5e 106 void btn_released()
yramesh 80:62f38a170d5e 107 {
yramesh 80:62f38a170d5e 108 btnState = false;
yramesh 80:62f38a170d5e 109 }
rgrover1 72:99c283dfe28d 110 int main(void)
rgrover1 72:99c283dfe28d 111 {
yramesh 80:62f38a170d5e 112 heartbeat = 1;
rgrover1 72:99c283dfe28d 113 Ticker ticker;
yramesh 80:62f38a170d5e 114 ticker.attach(periodicCallback, 1); // blink LED every second and also send button state update
rgrover1 72:99c283dfe28d 115
rgrover1 73:49b6090478e2 116 BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
rgrover1 72:99c283dfe28d 117 ble.init(bleInitComplete);
Rohit Grover 3:24e2b056d229 118
rgrover1 73:49b6090478e2 119 /* SpinWait for initialization to complete. This is necessary because the
rgrover1 73:49b6090478e2 120 * BLE object is used in the main loop below. */
vcoubard 75:8128a06c0a21 121 while (ble.hasInitialized() == false) { /* spin loop */ }
yramesh 80:62f38a170d5e 122 btnA.fall(btn_pressed); /* register callback for button pressed interrupt */
yramesh 80:62f38a170d5e 123 btnA.rise(btn_released); /* register callback for button released interrupt */
mbedAustin 55:3a7d497a3e03 124 // infinite loop
mbedAustin 55:3a7d497a3e03 125 while (1) {
mbedAustin 55:3a7d497a3e03 126 // check for trigger from periodicCallback()
rgrover1 50:477004d54431 127 if (triggerSensorPolling && ble.getGapState().connected) {
Rohit Grover 36:ea2a1b4f51c1 128 triggerSensorPolling = false;
yramesh 80:62f38a170d5e 129 buttonServicePtr->updateButtonState(btnState);
Rohit Grover 36:ea2a1b4f51c1 130 } else {
mbedAustin 55:3a7d497a3e03 131 ble.waitForEvent(); // low power wait for event
Rohit Grover 36:ea2a1b4f51c1 132 }
ktownsend 0:87a7fc231fae 133 }
ktownsend 0:87a7fc231fae 134 }