Interactive Device Design / Mbed 2 deprecated BLE_mediCAL

BLE project for PILLAR

Dependencies:   BLE_API mbed simpleBLEControl

Fork of BLE_API_DEMO by Ben Zhang

main.cpp@54:52be0aeba318, 2014-11-28 (annotated)

Committer:
antoniorohit
Date:
Fri Nov 28 08:10:25 2014 +0000
Revision:
54:52be0aeba318
Parent:
53:f503e75f0c94 
Funnel + Base motor integrated positioning;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
antoniorohit 51:0bf1116bca52 1 // This code is for the nRF51822 that is used to provide a BLE interface to PILLar
antoniorohit 51:0bf1116bca52 2 // There is 1 service and 1 characteristic
antoniorohit 51:0bf1116bca52 3 // The service provides a way to write a step value from the phone to a stepper motor
antoniorohit 51:0bf1116bca52 4 // controlled by an Arduino
ktownsend 0:87a7fc231fae 5 #include "mbed.h"
Rohit Grover 10:2436164b692e 6 #include "BLEDevice.h"
antoniorohit 53:f503e75f0c94 7 #define RFID_BUFF_SIZE 8 // Enough to hold 7-byte UID + delimiter
ktownsend 0:87a7fc231fae 8
antoniorohit 52:8e483d1199f9 9 DigitalOut led1(LED1); // LED toggled on connect and write events
antoniorohit 52:8e483d1199f9 10 DigitalOut led2(LED2); // Toggled on button press
antoniorohit 51:0bf1116bca52 11 BLEDevice ble; // Declare the ble device
antoniorohit 51:0bf1116bca52 12 Serial arduino(USBTX, USBRX); // serial interface to PC or Arduino controlling the stepper
ktownsend 0:87a7fc231fae 13
antoniorohit 51:0bf1116bca52 14 // Arbit 128-bit UIDs generated from
antoniorohit 51:0bf1116bca52 15 // http://www.guidgenerator.com/online-guid-generator.aspx
antoniorohit 51:0bf1116bca52 16 // We need one for each service and characteristic
antoniorohit 51:0bf1116bca52 17 const uint8_t ARDUINO_WRITE_CHARACTERISTIC_UUID[LENGTH_OF_LONG_UUID] = {
nebgnahz 50:4c02add9abba 18 0xfb, 0x71, 0xbc, 0xc0, 0x5a, 0x0c, 0x11, 0xe4,
nebgnahz 50:4c02add9abba 19 0x91, 0xae, 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b
nebgnahz 50:4c02add9abba 20 };
antoniorohit 51:0bf1116bca52 21
antoniorohit 52:8e483d1199f9 22 const uint8_t RFID_UUID[LENGTH_OF_LONG_UUID] = {
antoniorohit 52:8e483d1199f9 23 0x7a, 0x77, 0xbe, 0x20, 0x5a, 0x0d, 0x11, 0xe4,
antoniorohit 52:8e483d1199f9 24 0xa9, 0x5e, 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b
antoniorohit 52:8e483d1199f9 25 };
antoniorohit 52:8e483d1199f9 26
nebgnahz 50:4c02add9abba 27 const uint8_t TEST_SERVICE_UUID[LENGTH_OF_LONG_UUID] = {
nebgnahz 50:4c02add9abba 28 0xb0, 0xbb, 0x58, 0x20, 0x5a, 0x0d, 0x11, 0xe4,
antoniorohit 51:0bf1116bca52 29 0x93, 0xee, 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b};
nebgnahz 50:4c02add9abba 30
antoniorohit 51:0bf1116bca52 31 const static char DEVICE_NAME[] = "mediCAL BLE"; // For Advertisement
antoniorohit 51:0bf1116bca52 32 static volatile uint16_t writeToArduino_handler; // handler to echo data
antoniorohit 52:8e483d1199f9 33 static volatile bool is_button_pressed = false;
antoniorohit 52:8e483d1199f9 34 static volatile bool uid_read = false;
antoniorohit 52:8e483d1199f9 35
antoniorohit 52:8e483d1199f9 36
antoniorohit 52:8e483d1199f9 37 // What happens on connect event - DEBUG purposes ONLY!!
antoniorohit 52:8e483d1199f9 38 void onConnection(Gap::Handle_t handle, const Gap::ConnectionParams_t * param_ptr){
antoniorohit 52:8e483d1199f9 39 arduino.printf("Connection Event!\n\r");
antoniorohit 52:8e483d1199f9 40 ble.stopAdvertising(); // stop advertising
antoniorohit 52:8e483d1199f9 41 led1 = !led1.read();
antoniorohit 52:8e483d1199f9 42 }
nebgnahz 48:908b4ec086ba 43
antoniorohit 51:0bf1116bca52 44 // What happens on disconnect event
antoniorohit 51:0bf1116bca52 45 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason){
antoniorohit 52:8e483d1199f9 46 arduino.printf("Disconnection Event!\n\r");
rgrover1 46:ee7c55907f36 47 ble.startAdvertising(); // restart advertising
rgrover1 7:daab8ba5139e 48 }
Rohit Grover 3:24e2b056d229 49
antoniorohit 51:0bf1116bca52 50 // This function is called whenever data is written to the BLE device through the phone
antoniorohit 51:0bf1116bca52 51 void onDatawritten(const GattCharacteristicWriteCBParams *eventDataP) {
nebgnahz 49:14b2df099dfc 52 // eventDataP->charHandle is just uint16_t
nebgnahz 49:14b2df099dfc 53 // it's used to dispatch the callbacks
antoniorohit 51:0bf1116bca52 54 if(eventDataP->charHandle==writeToArduino_handler){ // The data is for the motor
antoniorohit 51:0bf1116bca52 55 uint16_t bytesRead = eventDataP->len;
antoniorohit 54:52be0aeba318 56 // What the BLE master will tell us is which funnels to dispense from
antoniorohit 54:52be0aeba318 57 int funnel = *((int16_t *)eventDataP->data);
antoniorohit 54:52be0aeba318 58 switch(funnel){
antoniorohit 54:52be0aeba318 59 case 0:
antoniorohit 54:52be0aeba318 60 arduino.printf("%dm", 0);
antoniorohit 54:52be0aeba318 61 arduino.printf("%dM", 25);
antoniorohit 54:52be0aeba318 62 arduino.printf("%dM", -25);
antoniorohit 54:52be0aeba318 63 arduino.printf("%dm", 128);
antoniorohit 54:52be0aeba318 64 arduino.printf("%dm", -128);
antoniorohit 54:52be0aeba318 65 arduino.printf("%dm", -0);
antoniorohit 54:52be0aeba318 66 break;
antoniorohit 54:52be0aeba318 67 case 1:
antoniorohit 54:52be0aeba318 68 arduino.printf("%dm", 128);
antoniorohit 54:52be0aeba318 69 arduino.printf("%dM", 75);
antoniorohit 54:52be0aeba318 70 arduino.printf("%dM", -75);
antoniorohit 54:52be0aeba318 71 arduino.printf("%dm", 128);
antoniorohit 54:52be0aeba318 72 arduino.printf("%dm", -128);
antoniorohit 54:52be0aeba318 73 arduino.printf("%dm", -128);
antoniorohit 54:52be0aeba318 74 break;
antoniorohit 54:52be0aeba318 75 case 2:
antoniorohit 54:52be0aeba318 76 arduino.printf("%dm", 256);
antoniorohit 54:52be0aeba318 77 arduino.printf("%dM", 125);
antoniorohit 54:52be0aeba318 78 arduino.printf("%dM", -125);
antoniorohit 54:52be0aeba318 79 arduino.printf("%dm", 128);
antoniorohit 54:52be0aeba318 80 arduino.printf("%dm", -128);
antoniorohit 54:52be0aeba318 81 arduino.printf("%dm", -256);
antoniorohit 54:52be0aeba318 82 break;
antoniorohit 54:52be0aeba318 83
antoniorohit 54:52be0aeba318 84 case 3:
antoniorohit 54:52be0aeba318 85 arduino.printf("%dm", 384);
antoniorohit 54:52be0aeba318 86 arduino.printf("%dM", 175);
antoniorohit 54:52be0aeba318 87 arduino.printf("%dM", -175);
antoniorohit 54:52be0aeba318 88 arduino.printf("%dm", 128);
antoniorohit 54:52be0aeba318 89 arduino.printf("%dm", -128);
antoniorohit 54:52be0aeba318 90 arduino.printf("%dm", -384);
antoniorohit 54:52be0aeba318 91 break;
antoniorohit 54:52be0aeba318 92
antoniorohit 54:52be0aeba318 93 default:
antoniorohit 54:52be0aeba318 94 break;
antoniorohit 54:52be0aeba318 95 }
antoniorohit 54:52be0aeba318 96
antoniorohit 53:f503e75f0c94 97 led1 = !led1.read(); // debug purposes
nebgnahz 48:908b4ec086ba 98 }
nebgnahz 48:908b4ec086ba 99 }
antoniorohit 53:f503e75f0c94 100 char read_ch; // temp var to store data from arduino
antoniorohit 52:8e483d1199f9 101 uint8_t buff[RFID_BUFF_SIZE] = {0}; // max packet size for GATT is 20 bytes
antoniorohit 52:8e483d1199f9 102 uint8_t ct = 0;
antoniorohit 52:8e483d1199f9 103
antoniorohit 52:8e483d1199f9 104 void callback() {
antoniorohit 52:8e483d1199f9 105 // Note: you need to actually read from the serial to clear the RX interrupt
antoniorohit 52:8e483d1199f9 106 read_ch = arduino.getc();
antoniorohit 53:f503e75f0c94 107 buff[ct++] = int(read_ch);
antoniorohit 53:f503e75f0c94 108
antoniorohit 53:f503e75f0c94 109 if((ct > RFID_BUFF_SIZE-1)){ // Arduino sends 8-bytes [UID][;][0 padding]
antoniorohit 52:8e483d1199f9 110 uid_read = true;
antoniorohit 52:8e483d1199f9 111 }
antoniorohit 53:f503e75f0c94 112 led2 = !led2.read(); // debug purposes
antoniorohit 52:8e483d1199f9 113 }
antoniorohit 52:8e483d1199f9 114
antoniorohit 52:8e483d1199f9 115 // Button1 pressed routine - toggle is_button pressed
antoniorohit 52:8e483d1199f9 116 void button1Pressed() {
antoniorohit 52:8e483d1199f9 117 is_button_pressed = !is_button_pressed;
antoniorohit 53:f503e75f0c94 118 led2 = !led2.read(); // debug
antoniorohit 52:8e483d1199f9 119 }
antoniorohit 52:8e483d1199f9 120
antoniorohit 52:8e483d1199f9 121 // Button2 pressed routine
antoniorohit 52:8e483d1199f9 122 void button2Pressed() {
antoniorohit 53:f503e75f0c94 123 led2 = !led2.read(); // debug
antoniorohit 52:8e483d1199f9 124 }
rgrover1 47:430545f41113 125
ktownsend 0:87a7fc231fae 126 int main(void)
ktownsend 0:87a7fc231fae 127 {
antoniorohit 52:8e483d1199f9 128 arduino.baud(115200);
antoniorohit 51:0bf1116bca52 129 arduino.printf("Entered main\n\r");
ktownsend 0:87a7fc231fae 130
antoniorohit 52:8e483d1199f9 131 // RFID Interrupt initialization
antoniorohit 52:8e483d1199f9 132 // button initialization
antoniorohit 52:8e483d1199f9 133 InterruptIn button1(BUTTON1);
antoniorohit 52:8e483d1199f9 134 button1.mode(PullUp);
antoniorohit 52:8e483d1199f9 135 button1.rise(&button1Pressed);
antoniorohit 52:8e483d1199f9 136
antoniorohit 52:8e483d1199f9 137 InterruptIn button2(BUTTON2);
antoniorohit 52:8e483d1199f9 138 button2.mode(PullUp);
antoniorohit 52:8e483d1199f9 139 button2.rise(&button2Pressed);
antoniorohit 52:8e483d1199f9 140
antoniorohit 53:f503e75f0c94 141 arduino.attach(&callback); // callback is triggered when there is incoming serial data
antoniorohit 53:f503e75f0c94 142
antoniorohit 51:0bf1116bca52 143 // You can write from the phone to control what is written to Arduino
antoniorohit 51:0bf1116bca52 144 GattCharacteristic writeToArduino_characteristics(
antoniorohit 51:0bf1116bca52 145 ARDUINO_WRITE_CHARACTERISTIC_UUID, NULL, sizeof(int16_t), sizeof(int16_t),
antoniorohit 52:8e483d1199f9 146 GattCharacteristic::BLE_GATT_FORMAT_SINT16 | // 16-bit signed int
antoniorohit 51:0bf1116bca52 147 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | // has read
antoniorohit 51:0bf1116bca52 148 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE); // and write properties
antoniorohit 51:0bf1116bca52 149 writeToArduino_handler = writeToArduino_characteristics.getValueAttribute().getHandle();// save the handler
rgrover1 45:98c5a34b07a4 150
antoniorohit 52:8e483d1199f9 151 GattCharacteristic RFID_characteristics(
antoniorohit 52:8e483d1199f9 152 RFID_UUID, NULL, RFID_BUFF_SIZE*sizeof(uint8_t), RFID_BUFF_SIZE*sizeof(uint8_t),
antoniorohit 52:8e483d1199f9 153 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ |
antoniorohit 52:8e483d1199f9 154 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
antoniorohit 52:8e483d1199f9 155
antoniorohit 52:8e483d1199f9 156
antoniorohit 52:8e483d1199f9 157 GattCharacteristic *charTable[] = {&writeToArduino_characteristics,
antoniorohit 52:8e483d1199f9 158 &RFID_characteristics}; // Characteristic table
antoniorohit 51:0bf1116bca52 159 GattService testService(TEST_SERVICE_UUID, charTable, // Add the char(s) to this service
nebgnahz 49:14b2df099dfc 160 sizeof(charTable) / sizeof(GattCharacteristic *));
nebgnahz 50:4c02add9abba 161
nebgnahz 48:908b4ec086ba 162 // BLE setup, mainly we add service and callbacks
nebgnahz 48:908b4ec086ba 163 ble.init();
nebgnahz 48:908b4ec086ba 164 ble.addService(testService);
antoniorohit 52:8e483d1199f9 165 ble.onDataWritten(onDatawritten);
antoniorohit 52:8e483d1199f9 166 ble.onConnection(onConnection);
nebgnahz 48:908b4ec086ba 167 ble.onDisconnection(disconnectionCallback);
nebgnahz 48:908b4ec086ba 168
nebgnahz 48:908b4ec086ba 169 // setup advertising
nebgnahz 49:14b2df099dfc 170 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED |
nebgnahz 50:4c02add9abba 171 GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
nebgnahz 49:14b2df099dfc 172 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME,
nebgnahz 49:14b2df099dfc 173 (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
rgrover1 7:daab8ba5139e 174 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
antoniorohit 52:8e483d1199f9 175 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
rgrover1 7:daab8ba5139e 176 ble.startAdvertising();
Rohit Grover 3:24e2b056d229 177
Rohit Grover 11:1d9aafee4984 178 while (true) {
antoniorohit 52:8e483d1199f9 179 if (uid_read) {
antoniorohit 52:8e483d1199f9 180 ble.updateCharacteristicValue(RFID_characteristics.getValueAttribute().getHandle(),
antoniorohit 52:8e483d1199f9 181 buff, RFID_BUFF_SIZE*sizeof(uint8_t));
antoniorohit 52:8e483d1199f9 182 uid_read = false;
antoniorohit 52:8e483d1199f9 183 ct = 0;
antoniorohit 52:8e483d1199f9 184 }
antoniorohit 52:8e483d1199f9 185 else {
antoniorohit 52:8e483d1199f9 186 ble.waitForEvent();
antoniorohit 52:8e483d1199f9 187 }
ktownsend 0:87a7fc231fae 188 }
nebgnahz 50:4c02add9abba 189 }