Josh Stroud / Mbed 2 deprecated nrf51-evoTest

Example with mbed, ble, and evothings app

Dependencies:   BLE_API mbed

Fork of HelloWorld by Simon Ford

main.cpp@2:3015a85eb00a, 2016-03-15 (annotated)

Committer:
jstroud
Date:
Tue Mar 15 03:17:05 2016 +0000
Revision:
2:3015a85eb00a
Parent:
0:fb6bbc10ffa0 
First commit, works, for Jacob

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jstroud 2:3015a85eb00a 1 /*
jstroud 2:3015a85eb00a 2 * nRF51-DK BLEDevice service/characteristic (read/write) using mbed.org
jstroud 2:3015a85eb00a 3 */
jstroud 2:3015a85eb00a 4
jstroud 2:3015a85eb00a 5 // uncomment if not interested in a console log
jstroud 2:3015a85eb00a 6 #define CONSOLE_LOG
jstroud 2:3015a85eb00a 7
simon 0:fb6bbc10ffa0 8 #include "mbed.h"
jstroud 2:3015a85eb00a 9 #include "BLE.h"
jstroud 2:3015a85eb00a 10
jstroud 2:3015a85eb00a 11 //-------------------------------------------------------------------------
jstroud 2:3015a85eb00a 12
jstroud 2:3015a85eb00a 13 #ifdef CONSOLE_LOG
jstroud 2:3015a85eb00a 14 #define INFO(x, ...) printf(x, ##__VA_ARGS__);
jstroud 2:3015a85eb00a 15 #define INFO_NL(x, ...) printf(x "\r\n", ##__VA_ARGS__);
jstroud 2:3015a85eb00a 16 #else
jstroud 2:3015a85eb00a 17 #define INFO(x, ...)
jstroud 2:3015a85eb00a 18 #define INFO_NL(x, ...)
jstroud 2:3015a85eb00a 19 #endif
simon 0:fb6bbc10ffa0 20
jstroud 2:3015a85eb00a 21 // a little routine to print a 128-bit UUID nicely
jstroud 2:3015a85eb00a 22 void INFO_UUID(const char *prefix, UUID uuid)
jstroud 2:3015a85eb00a 23 {
jstroud 2:3015a85eb00a 24 uint8_t *p = (uint8_t *)uuid.getBaseUUID();
jstroud 2:3015a85eb00a 25 INFO("%s: ", prefix);
jstroud 2:3015a85eb00a 26 for (int i=0; i<16; i++)
jstroud 2:3015a85eb00a 27 {
jstroud 2:3015a85eb00a 28 INFO("%02x", p[i]);
jstroud 2:3015a85eb00a 29 if ((i == 3) || (i == 5) || (i == 7) || (i == 9)) INFO("-");
jstroud 2:3015a85eb00a 30 }
jstroud 2:3015a85eb00a 31 INFO_NL("");
jstroud 2:3015a85eb00a 32 }
jstroud 2:3015a85eb00a 33
jstroud 2:3015a85eb00a 34 //-------------------------------------------------------------------------
jstroud 2:3015a85eb00a 35
jstroud 2:3015a85eb00a 36 // name of the device
jstroud 2:3015a85eb00a 37 const static char DEVICE_NAME[] = "nRF51-DK";
jstroud 2:3015a85eb00a 38
jstroud 2:3015a85eb00a 39 // GATT service and characteristic UUIDs
jstroud 2:3015a85eb00a 40 const UUID nRF51_GATT_SERVICE = UUID((uint8_t *)"nRF51-DK ");
jstroud 2:3015a85eb00a 41 const UUID nRF51_GATT_CHAR_BUTTON = UUID((uint8_t *)"nRF51-DK button ");
jstroud 2:3015a85eb00a 42 const UUID nRF51_GATT_CHAR_LED = UUID((uint8_t *)"nRF51-DK led ");
simon 0:fb6bbc10ffa0 43
jstroud 2:3015a85eb00a 44 #define CHARACTERISTIC_BUTTON 0
jstroud 2:3015a85eb00a 45 #define CHARACTERISTIC_LED 1
jstroud 2:3015a85eb00a 46 #define CHARACTERISTIC_COUNT 2
jstroud 2:3015a85eb00a 47
jstroud 2:3015a85eb00a 48 // our bluetooth smart objects
jstroud 2:3015a85eb00a 49 BLEDevice ble;
jstroud 2:3015a85eb00a 50 GattService *gatt_service;
jstroud 2:3015a85eb00a 51 GattCharacteristic *gatt_characteristics[CHARACTERISTIC_COUNT];
jstroud 2:3015a85eb00a 52 uint8_t gatt_char_value[CHARACTERISTIC_COUNT];
jstroud 2:3015a85eb00a 53
jstroud 2:3015a85eb00a 54 #ifdef CONSOLE_LOG
jstroud 2:3015a85eb00a 55 Serial pc(USBTX,USBRX);
jstroud 2:3015a85eb00a 56 #endif
jstroud 2:3015a85eb00a 57
jstroud 2:3015a85eb00a 58 //-------------------------------------------------------------------------
jstroud 2:3015a85eb00a 59 // button handling
jstroud 2:3015a85eb00a 60 //-------------------------------------------------------------------------
jstroud 2:3015a85eb00a 61
jstroud 2:3015a85eb00a 62 // define our digital in values we will be using for the characteristic
jstroud 2:3015a85eb00a 63 DigitalIn button1(P0_17);
jstroud 2:3015a85eb00a 64 DigitalIn button2(P0_18);
jstroud 2:3015a85eb00a 65 DigitalIn button3(P0_19);
jstroud 2:3015a85eb00a 66 DigitalIn button4(P0_20);
jstroud 2:3015a85eb00a 67
jstroud 2:3015a85eb00a 68 uint8_t button_new_value = 0;
jstroud 2:3015a85eb00a 69 uint8_t button_old_value = button_new_value;
jstroud 2:3015a85eb00a 70
jstroud 2:3015a85eb00a 71 void monitorButtons()
jstroud 2:3015a85eb00a 72 {
jstroud 2:3015a85eb00a 73 // read in the buttons, mapped into nibble (0000 = all off, 1111 = all on)
jstroud 2:3015a85eb00a 74 button_new_value = 0;
jstroud 2:3015a85eb00a 75 button_new_value |= (button1.read() != 1); button_new_value <<= 1;
jstroud 2:3015a85eb00a 76 button_new_value |= (button2.read() != 1); button_new_value <<= 1;
jstroud 2:3015a85eb00a 77 button_new_value |= (button3.read() != 1); button_new_value <<= 1;
jstroud 2:3015a85eb00a 78 button_new_value |= (button4.read() != 1);
jstroud 2:3015a85eb00a 79
jstroud 2:3015a85eb00a 80 // set the updated value of the characteristic if data has changed
jstroud 2:3015a85eb00a 81 if (button_new_value != button_old_value)
jstroud 2:3015a85eb00a 82 {
jstroud 2:3015a85eb00a 83 ble.updateCharacteristicValue(
jstroud 2:3015a85eb00a 84 gatt_characteristics[CHARACTERISTIC_BUTTON] -> getValueHandle(),
jstroud 2:3015a85eb00a 85 &button_new_value, sizeof(button_new_value));
jstroud 2:3015a85eb00a 86 button_old_value = button_new_value;
jstroud 2:3015a85eb00a 87
jstroud 2:3015a85eb00a 88 INFO_NL(" button state: [0x%02x]", button_new_value);
simon 0:fb6bbc10ffa0 89 }
simon 0:fb6bbc10ffa0 90 }
jstroud 2:3015a85eb00a 91
jstroud 2:3015a85eb00a 92 //-------------------------------------------------------------------------
jstroud 2:3015a85eb00a 93 // LED handling
jstroud 2:3015a85eb00a 94 //-------------------------------------------------------------------------
jstroud 2:3015a85eb00a 95
jstroud 2:3015a85eb00a 96 DigitalOut led1(P0_21);
jstroud 2:3015a85eb00a 97 DigitalOut led2(P0_22);
jstroud 2:3015a85eb00a 98 DigitalOut led3(P0_23);
jstroud 2:3015a85eb00a 99 DigitalOut led4(P0_24);
jstroud 2:3015a85eb00a 100
jstroud 2:3015a85eb00a 101 uint8_t led_value = 0;
jstroud 2:3015a85eb00a 102
jstroud 2:3015a85eb00a 103 void onLedDataWritten(const uint8_t* value, uint8_t length)
jstroud 2:3015a85eb00a 104 {
jstroud 2:3015a85eb00a 105 // we only care about a single byte
jstroud 2:3015a85eb00a 106 led_value = value[0];
jstroud 2:3015a85eb00a 107
jstroud 2:3015a85eb00a 108 // depending on the value coming through; set/unset LED's
jstroud 2:3015a85eb00a 109 if ((led_value & 0x01) != 0) led1.write(0); else led1.write(1);
jstroud 2:3015a85eb00a 110 if ((led_value & 0x02) != 0) led2.write(0); else led2.write(1);
jstroud 2:3015a85eb00a 111 if ((led_value & 0x04) != 0) led3.write(0); else led3.write(1);
jstroud 2:3015a85eb00a 112 if ((led_value & 0x08) != 0) led4.write(0); else led4.write(1);
jstroud 2:3015a85eb00a 113
jstroud 2:3015a85eb00a 114 INFO_NL(" led state: [0x%02x]", led_value);
jstroud 2:3015a85eb00a 115 }
jstroud 2:3015a85eb00a 116
jstroud 2:3015a85eb00a 117 //-------------------------------------------------------------------------
jstroud 2:3015a85eb00a 118
jstroud 2:3015a85eb00a 119 void onConnection(const Gap::ConnectionCallbackParams_t *params)
jstroud 2:3015a85eb00a 120 {
jstroud 2:3015a85eb00a 121 INFO_NL(">> connected");
jstroud 2:3015a85eb00a 122
jstroud 2:3015a85eb00a 123 // set the initial values of the characteristics (for every session)
jstroud 2:3015a85eb00a 124 led_value = 0;
jstroud 2:3015a85eb00a 125 onLedDataWritten(&led_value, 1); // force LED's to be in off state
jstroud 2:3015a85eb00a 126 }
jstroud 2:3015a85eb00a 127
jstroud 2:3015a85eb00a 128 void onDataWritten(const GattWriteCallbackParams *context)
jstroud 2:3015a85eb00a 129 {
jstroud 2:3015a85eb00a 130 // was the characteristic being written to nRF51_GATT_CHAR_LED?
jstroud 2:3015a85eb00a 131 if (context -> handle ==
jstroud 2:3015a85eb00a 132 gatt_characteristics[CHARACTERISTIC_LED] -> getValueHandle())
jstroud 2:3015a85eb00a 133 {
jstroud 2:3015a85eb00a 134 onLedDataWritten(context -> data, context -> len);
jstroud 2:3015a85eb00a 135 }
jstroud 2:3015a85eb00a 136 }
jstroud 2:3015a85eb00a 137
jstroud 2:3015a85eb00a 138 void onDisconnection(Gap::Handle_t handle,
jstroud 2:3015a85eb00a 139 Gap::DisconnectionReason_t disconnectReason)
jstroud 2:3015a85eb00a 140 {
jstroud 2:3015a85eb00a 141 INFO_NL(">> disconnected");
jstroud 2:3015a85eb00a 142 ble.startAdvertising();
jstroud 2:3015a85eb00a 143 INFO_NL(">> device advertising");
jstroud 2:3015a85eb00a 144 }
jstroud 2:3015a85eb00a 145
jstroud 2:3015a85eb00a 146 int main()
jstroud 2:3015a85eb00a 147 {
jstroud 2:3015a85eb00a 148 #ifdef CONSOLE_LOG
jstroud 2:3015a85eb00a 149 // wait a second before trying to write something to console
jstroud 2:3015a85eb00a 150 wait(1);
jstroud 2:3015a85eb00a 151 #endif
jstroud 2:3015a85eb00a 152 INFO_NL(">> nRF51-DK start");
jstroud 2:3015a85eb00a 153
jstroud 2:3015a85eb00a 154 // create our button characteristic (read, notify)
jstroud 2:3015a85eb00a 155 gatt_characteristics[CHARACTERISTIC_BUTTON] =
jstroud 2:3015a85eb00a 156 new GattCharacteristic(
jstroud 2:3015a85eb00a 157 nRF51_GATT_CHAR_BUTTON,
jstroud 2:3015a85eb00a 158 &gatt_char_value[CHARACTERISTIC_BUTTON], 1, 1,
jstroud 2:3015a85eb00a 159 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ |
jstroud 2:3015a85eb00a 160 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
jstroud 2:3015a85eb00a 161
jstroud 2:3015a85eb00a 162 // create our LED characteristic (read, write)
jstroud 2:3015a85eb00a 163 gatt_characteristics[CHARACTERISTIC_LED] =
jstroud 2:3015a85eb00a 164 new GattCharacteristic(
jstroud 2:3015a85eb00a 165 nRF51_GATT_CHAR_LED,
jstroud 2:3015a85eb00a 166 &gatt_char_value[CHARACTERISTIC_LED], 1, 1,
jstroud 2:3015a85eb00a 167 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ |
jstroud 2:3015a85eb00a 168 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE |
jstroud 2:3015a85eb00a 169 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE);
jstroud 2:3015a85eb00a 170
jstroud 2:3015a85eb00a 171 // create our service, with both characteristics
jstroud 2:3015a85eb00a 172 gatt_service =
jstroud 2:3015a85eb00a 173 new GattService(nRF51_GATT_SERVICE,
jstroud 2:3015a85eb00a 174 gatt_characteristics, CHARACTERISTIC_COUNT);
jstroud 2:3015a85eb00a 175
jstroud 2:3015a85eb00a 176 // initialize our ble device
jstroud 2:3015a85eb00a 177 ble.init();
jstroud 2:3015a85eb00a 178 ble.setDeviceName((uint8_t *)DEVICE_NAME);
jstroud 2:3015a85eb00a 179 INFO_NL(">> initialized device '%s'", DEVICE_NAME);
jstroud 2:3015a85eb00a 180
jstroud 2:3015a85eb00a 181 // configure our advertising type, payload and interval
jstroud 2:3015a85eb00a 182 ble.accumulateAdvertisingPayload(
jstroud 2:3015a85eb00a 183 GapAdvertisingData::BREDR_NOT_SUPPORTED |
jstroud 2:3015a85eb00a 184 GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
jstroud 2:3015a85eb00a 185 ble.accumulateAdvertisingPayload(
jstroud 2:3015a85eb00a 186 GapAdvertisingData::COMPLETE_LOCAL_NAME,
jstroud 2:3015a85eb00a 187 (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
jstroud 2:3015a85eb00a 188 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
jstroud 2:3015a85eb00a 189 ble.setAdvertisingInterval(160); // 100ms
jstroud 2:3015a85eb00a 190 INFO_NL(">> configured advertising type, payload and interval");
jstroud 2:3015a85eb00a 191
jstroud 2:3015a85eb00a 192 // configure our callbacks
jstroud 2:3015a85eb00a 193 //ble.onDisconnection(onDisconnection);
jstroud 2:3015a85eb00a 194 ble.onConnection(onConnection);
jstroud 2:3015a85eb00a 195 ble.onDataWritten(onDataWritten);
jstroud 2:3015a85eb00a 196 INFO_NL(">> registered for callbacks");
jstroud 2:3015a85eb00a 197
jstroud 2:3015a85eb00a 198 // add our gatt service with two characteristics
jstroud 2:3015a85eb00a 199 ble.addService(*gatt_service);
jstroud 2:3015a85eb00a 200 INFO_NL(">> added GATT service with two characteristics");
jstroud 2:3015a85eb00a 201
jstroud 2:3015a85eb00a 202 // show some debugging information about service/characteristics
jstroud 2:3015a85eb00a 203 INFO_UUID(" ", nRF51_GATT_SERVICE);
jstroud 2:3015a85eb00a 204 INFO_UUID(" :", nRF51_GATT_CHAR_BUTTON);
jstroud 2:3015a85eb00a 205 INFO_UUID(" :", nRF51_GATT_CHAR_LED);
jstroud 2:3015a85eb00a 206
jstroud 2:3015a85eb00a 207 // start advertising
jstroud 2:3015a85eb00a 208 ble.startAdvertising();
jstroud 2:3015a85eb00a 209 INFO_NL(">> device advertising");
jstroud 2:3015a85eb00a 210
jstroud 2:3015a85eb00a 211 // start monitoring the buttons and posting new values
jstroud 2:3015a85eb00a 212 Ticker ticker;
jstroud 2:3015a85eb00a 213 ticker.attach(monitorButtons, 0.1); // every 10th of a second
jstroud 2:3015a85eb00a 214 INFO_NL(">> monitoring button state");
jstroud 2:3015a85eb00a 215
jstroud 2:3015a85eb00a 216 // let the device do its thing
jstroud 2:3015a85eb00a 217 INFO_NL(">> waiting for events ");
jstroud 2:3015a85eb00a 218 for (;;)
jstroud 2:3015a85eb00a 219 {
jstroud 2:3015a85eb00a 220 ble.waitForEvent();
jstroud 2:3015a85eb00a 221 }
jstroud 2:3015a85eb00a 222 }
jstroud 2:3015a85eb00a 223
jstroud 2:3015a85eb00a 224 //-------------------------------------------------------------------------