Seat sensor first upload wokring 07092016
Dependencies: BLE_API mbed nRF51822
main.cpp@0:f23a00038055, 2016-09-07 (annotated)
- Committer:
- samuelmoss
- Date:
- Wed Sep 07 15:08:48 2016 +0000
- Revision:
- 0:f23a00038055
First upload working 07092016
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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samuelmoss | 0:f23a00038055 | 1 | /* mbed Microcontroller Library |
samuelmoss | 0:f23a00038055 | 2 | * Copyright (c) 2006-2013 ARM Limited |
samuelmoss | 0:f23a00038055 | 3 | * |
samuelmoss | 0:f23a00038055 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
samuelmoss | 0:f23a00038055 | 5 | * you may not use this file except in compliance with the License. |
samuelmoss | 0:f23a00038055 | 6 | * You may obtain a copy of the License at |
samuelmoss | 0:f23a00038055 | 7 | * |
samuelmoss | 0:f23a00038055 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
samuelmoss | 0:f23a00038055 | 9 | * |
samuelmoss | 0:f23a00038055 | 10 | * Unless required by applicable law or agreed to in writing, software |
samuelmoss | 0:f23a00038055 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
samuelmoss | 0:f23a00038055 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
samuelmoss | 0:f23a00038055 | 13 | * See the License for the specific language governing permissions and |
samuelmoss | 0:f23a00038055 | 14 | * limitations under the License. |
samuelmoss | 0:f23a00038055 | 15 | */ |
samuelmoss | 0:f23a00038055 | 16 | |
samuelmoss | 0:f23a00038055 | 17 | #include "mbed.h" |
samuelmoss | 0:f23a00038055 | 18 | #include "ble/BLE.h" |
samuelmoss | 0:f23a00038055 | 19 | #include "ButtonService.h" |
samuelmoss | 0:f23a00038055 | 20 | |
samuelmoss | 0:f23a00038055 | 21 | Serial pc(USBTX, USBRX); |
samuelmoss | 0:f23a00038055 | 22 | DigitalOut led1(LED1); //sets led1 to digital out for connection status indicator |
samuelmoss | 0:f23a00038055 | 23 | DigitalOut led2(LED2); //sets led1 to digital out for seat status indicator |
samuelmoss | 0:f23a00038055 | 24 | InterruptIn button(P0_7); //sets Pin 7 to an interrupt enabled input for chair status updating |
samuelmoss | 0:f23a00038055 | 25 | |
samuelmoss | 0:f23a00038055 | 26 | const static char DEVICE_NAME[] = "Seat Sensor"; //specifies name of the device to be found |
samuelmoss | 0:f23a00038055 | 27 | static const uint16_t uuid16_list[] = {ButtonService::BUTTON_SERVICE_UUID}; |
samuelmoss | 0:f23a00038055 | 28 | |
samuelmoss | 0:f23a00038055 | 29 | Ticker ticker; //defines a ticker for periodic callback for connection indicator |
samuelmoss | 0:f23a00038055 | 30 | Timer debounceTimer; //defines a timer for the debouncing loop |
samuelmoss | 0:f23a00038055 | 31 | int pin = P0_7; |
samuelmoss | 0:f23a00038055 | 32 | BLE ble; |
samuelmoss | 0:f23a00038055 | 33 | |
samuelmoss | 0:f23a00038055 | 34 | enum { //an enumerator defining the three possible output states. Chair empty(RELEASED) =0. Chair OCCUPIED(PRESSED) = 1. Chair default(IDLE) = 2. |
samuelmoss | 0:f23a00038055 | 35 | RELEASED = 0, |
samuelmoss | 0:f23a00038055 | 36 | PRESSED, |
samuelmoss | 0:f23a00038055 | 37 | IDLE |
samuelmoss | 0:f23a00038055 | 38 | }; |
samuelmoss | 0:f23a00038055 | 39 | |
samuelmoss | 0:f23a00038055 | 40 | static uint8_t buttonState = IDLE; //initialised buttonState(Chair state) to the default(IDLE) |
samuelmoss | 0:f23a00038055 | 41 | static ButtonService *buttonServicePtr; |
samuelmoss | 0:f23a00038055 | 42 | |
samuelmoss | 0:f23a00038055 | 43 | /*function is called from the ISR when the chair becomes occupied, resetting the debounce timer and changing button state*/ |
samuelmoss | 0:f23a00038055 | 44 | void buttonPressedCallback(void) |
samuelmoss | 0:f23a00038055 | 45 | { |
samuelmoss | 0:f23a00038055 | 46 | |
samuelmoss | 0:f23a00038055 | 47 | debounceTimer.reset(); |
samuelmoss | 0:f23a00038055 | 48 | buttonState = PRESSED; |
samuelmoss | 0:f23a00038055 | 49 | |
samuelmoss | 0:f23a00038055 | 50 | } |
samuelmoss | 0:f23a00038055 | 51 | /*function is called from the ISR when the chair becomes empty, resetting the debounce timer and changing button state*/ |
samuelmoss | 0:f23a00038055 | 52 | void buttonReleasedCallback(void) |
samuelmoss | 0:f23a00038055 | 53 | { |
samuelmoss | 0:f23a00038055 | 54 | |
samuelmoss | 0:f23a00038055 | 55 | debounceTimer.reset(); |
samuelmoss | 0:f23a00038055 | 56 | buttonState = RELEASED; |
samuelmoss | 0:f23a00038055 | 57 | |
samuelmoss | 0:f23a00038055 | 58 | } |
samuelmoss | 0:f23a00038055 | 59 | |
samuelmoss | 0:f23a00038055 | 60 | |
samuelmoss | 0:f23a00038055 | 61 | /* upon disconnecting advertising process is repeated */ |
samuelmoss | 0:f23a00038055 | 62 | void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) |
samuelmoss | 0:f23a00038055 | 63 | { |
samuelmoss | 0:f23a00038055 | 64 | |
samuelmoss | 0:f23a00038055 | 65 | BLE::Instance().gap().startAdvertising(); |
samuelmoss | 0:f23a00038055 | 66 | |
samuelmoss | 0:f23a00038055 | 67 | } |
samuelmoss | 0:f23a00038055 | 68 | |
samuelmoss | 0:f23a00038055 | 69 | /* on connection state is outputted updating firefly */ |
samuelmoss | 0:f23a00038055 | 70 | void connectionCallback(const Gap::ConnectionCallbackParams_t *params) |
samuelmoss | 0:f23a00038055 | 71 | { |
samuelmoss | 0:f23a00038055 | 72 | |
samuelmoss | 0:f23a00038055 | 73 | // buttonServicePtr->updateButtonState(button.read()); |
samuelmoss | 0:f23a00038055 | 74 | |
samuelmoss | 0:f23a00038055 | 75 | |
samuelmoss | 0:f23a00038055 | 76 | } |
samuelmoss | 0:f23a00038055 | 77 | |
samuelmoss | 0:f23a00038055 | 78 | /* periodic callback for indicating state of the board */ |
samuelmoss | 0:f23a00038055 | 79 | void periodicCallback(void) |
samuelmoss | 0:f23a00038055 | 80 | { |
samuelmoss | 0:f23a00038055 | 81 | if(ble.getGapState().connected == 0) { |
samuelmoss | 0:f23a00038055 | 82 | led1=!led1; |
samuelmoss | 0:f23a00038055 | 83 | } else { |
samuelmoss | 0:f23a00038055 | 84 | led1= 1; |
samuelmoss | 0:f23a00038055 | 85 | } |
samuelmoss | 0:f23a00038055 | 86 | |
samuelmoss | 0:f23a00038055 | 87 | } |
samuelmoss | 0:f23a00038055 | 88 | |
samuelmoss | 0:f23a00038055 | 89 | /** |
samuelmoss | 0:f23a00038055 | 90 | * This function is called when the ble initialization process has failled |
samuelmoss | 0:f23a00038055 | 91 | */ |
samuelmoss | 0:f23a00038055 | 92 | void onBleInitError(BLE &ble, ble_error_t error) |
samuelmoss | 0:f23a00038055 | 93 | { |
samuelmoss | 0:f23a00038055 | 94 | /* Initialization error handling should go here */ |
samuelmoss | 0:f23a00038055 | 95 | } |
samuelmoss | 0:f23a00038055 | 96 | |
samuelmoss | 0:f23a00038055 | 97 | /** |
samuelmoss | 0:f23a00038055 | 98 | * Callback triggered when the ble initialization process has finished |
samuelmoss | 0:f23a00038055 | 99 | */ |
samuelmoss | 0:f23a00038055 | 100 | void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) |
samuelmoss | 0:f23a00038055 | 101 | { |
samuelmoss | 0:f23a00038055 | 102 | BLE& ble = params->ble; |
samuelmoss | 0:f23a00038055 | 103 | ble_error_t error = params->error; |
samuelmoss | 0:f23a00038055 | 104 | |
samuelmoss | 0:f23a00038055 | 105 | if (error != BLE_ERROR_NONE) { |
samuelmoss | 0:f23a00038055 | 106 | /* In case of error, forward the error handling to onBleInitError */ |
samuelmoss | 0:f23a00038055 | 107 | onBleInitError(ble, error); |
samuelmoss | 0:f23a00038055 | 108 | return; |
samuelmoss | 0:f23a00038055 | 109 | } |
samuelmoss | 0:f23a00038055 | 110 | |
samuelmoss | 0:f23a00038055 | 111 | |
samuelmoss | 0:f23a00038055 | 112 | /* Ensure that it is the default instance of BLE */ |
samuelmoss | 0:f23a00038055 | 113 | if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { |
samuelmoss | 0:f23a00038055 | 114 | return; |
samuelmoss | 0:f23a00038055 | 115 | } |
samuelmoss | 0:f23a00038055 | 116 | |
samuelmoss | 0:f23a00038055 | 117 | ble.gap().onDisconnection(disconnectionCallback); |
samuelmoss | 0:f23a00038055 | 118 | ble.gap().onConnection(connectionCallback); |
samuelmoss | 0:f23a00038055 | 119 | |
samuelmoss | 0:f23a00038055 | 120 | /* Setup primary service */ |
samuelmoss | 0:f23a00038055 | 121 | buttonServicePtr = new ButtonService(ble, false /* initial value for button pressed */); |
samuelmoss | 0:f23a00038055 | 122 | |
samuelmoss | 0:f23a00038055 | 123 | /* setup advertising */ |
samuelmoss | 0:f23a00038055 | 124 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
samuelmoss | 0:f23a00038055 | 125 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); |
samuelmoss | 0:f23a00038055 | 126 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
samuelmoss | 0:f23a00038055 | 127 | ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
samuelmoss | 0:f23a00038055 | 128 | ble.gap().setAdvertisingInterval(1000); /* 1000ms. */ |
samuelmoss | 0:f23a00038055 | 129 | ble.gap().startAdvertising(); |
samuelmoss | 0:f23a00038055 | 130 | |
samuelmoss | 0:f23a00038055 | 131 | } |
samuelmoss | 0:f23a00038055 | 132 | |
samuelmoss | 0:f23a00038055 | 133 | int main(void) |
samuelmoss | 0:f23a00038055 | 134 | { |
samuelmoss | 0:f23a00038055 | 135 | |
samuelmoss | 0:f23a00038055 | 136 | debounceTimer.start(); //initialises the debounce timer |
samuelmoss | 0:f23a00038055 | 137 | ticker.attach(periodicCallback, 1); // periodic ticker indicating the board it setup and running |
samuelmoss | 0:f23a00038055 | 138 | button.fall(buttonPressedCallback); //interrupt call for chair occupied |
samuelmoss | 0:f23a00038055 | 139 | button.rise(buttonReleasedCallback);//interrupt call for chair empty |
samuelmoss | 0:f23a00038055 | 140 | |
samuelmoss | 0:f23a00038055 | 141 | BLE &ble = BLE::Instance(); |
samuelmoss | 0:f23a00038055 | 142 | ble.init(bleInitComplete); |
samuelmoss | 0:f23a00038055 | 143 | |
samuelmoss | 0:f23a00038055 | 144 | |
samuelmoss | 0:f23a00038055 | 145 | while (ble.hasInitialized() == false) |
samuelmoss | 0:f23a00038055 | 146 | { |
samuelmoss | 0:f23a00038055 | 147 | /* spin loop */ |
samuelmoss | 0:f23a00038055 | 148 | } |
samuelmoss | 0:f23a00038055 | 149 | |
samuelmoss | 0:f23a00038055 | 150 | /* updates state to the firefly upon mbed board booting */ |
samuelmoss | 0:f23a00038055 | 151 | if (button.read() == 1) { |
samuelmoss | 0:f23a00038055 | 152 | buttonServicePtr->updateButtonState(1); |
samuelmoss | 0:f23a00038055 | 153 | led2 = !button.read(); |
samuelmoss | 0:f23a00038055 | 154 | } else { |
samuelmoss | 0:f23a00038055 | 155 | buttonServicePtr->updateButtonState(0); |
samuelmoss | 0:f23a00038055 | 156 | led2 = !button.read(); |
samuelmoss | 0:f23a00038055 | 157 | } |
samuelmoss | 0:f23a00038055 | 158 | |
samuelmoss | 0:f23a00038055 | 159 | /*main while loop*/ |
samuelmoss | 0:f23a00038055 | 160 | while (true) { |
samuelmoss | 0:f23a00038055 | 161 | |
samuelmoss | 0:f23a00038055 | 162 | /*this is the debouncing loop, debounce only occurs upon state change from occupied |
samuelmoss | 0:f23a00038055 | 163 | to empty so as to detect and ignore temporary shifting in the occupants position causing the system to believe the state has changed */ |
samuelmoss | 0:f23a00038055 | 164 | |
samuelmoss | 0:f23a00038055 | 165 | while(buttonState != IDLE) |
samuelmoss | 0:f23a00038055 | 166 | { |
samuelmoss | 0:f23a00038055 | 167 | if((buttonState == PRESSED)&&(debounceTimer.read_ms() > 200)) |
samuelmoss | 0:f23a00038055 | 168 | { |
samuelmoss | 0:f23a00038055 | 169 | |
samuelmoss | 0:f23a00038055 | 170 | led2=buttonState; |
samuelmoss | 0:f23a00038055 | 171 | buttonServicePtr->updateButtonState(buttonState); |
samuelmoss | 0:f23a00038055 | 172 | buttonState = IDLE; |
samuelmoss | 0:f23a00038055 | 173 | |
samuelmoss | 0:f23a00038055 | 174 | } |
samuelmoss | 0:f23a00038055 | 175 | |
samuelmoss | 0:f23a00038055 | 176 | else if ((buttonState == RELEASED) && (debounceTimer.read_ms()>2000)) //debounce timer set to 2 seconds, can be adjusted for more realtime or reliable updates |
samuelmoss | 0:f23a00038055 | 177 | { |
samuelmoss | 0:f23a00038055 | 178 | |
samuelmoss | 0:f23a00038055 | 179 | led2=buttonState; |
samuelmoss | 0:f23a00038055 | 180 | buttonServicePtr->updateButtonState(buttonState); |
samuelmoss | 0:f23a00038055 | 181 | buttonState = IDLE; |
samuelmoss | 0:f23a00038055 | 182 | |
samuelmoss | 0:f23a00038055 | 183 | } |
samuelmoss | 0:f23a00038055 | 184 | } |
samuelmoss | 0:f23a00038055 | 185 | |
samuelmoss | 0:f23a00038055 | 186 | ble.waitForEvent(); |
samuelmoss | 0:f23a00038055 | 187 | |
samuelmoss | 0:f23a00038055 | 188 | } |
samuelmoss | 0:f23a00038055 | 189 | } |
samuelmoss | 0:f23a00038055 | 190 | |
samuelmoss | 0:f23a00038055 | 191 |