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Dependencies:   BLE_API mbed nRF51822

Fork of BLE_GATT_Example by Bluetooth Low Energy

main.cpp@23:708cc5ef2604, 2017-05-31 (annotated)

Committer:
AidasL
Date:
Wed May 31 22:13:36 2017 +0000
Revision:
23:708cc5ef2604
Parent:
22:406127954d1f 
Initial commit;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 0:cd5b6733aeb1 1 #include "mbed.h"
andresag 19:477567297aac 2 #include "ble/BLE.h"
AidasL 23:708cc5ef2604 3 #include "sensors.h"
mbedAustin 1:94152e7d8b5c 4
AidasL 23:708cc5ef2604 5
mbedAustin 1:94152e7d8b5c 6
AidasL 23:708cc5ef2604 7 DigitalOut led(LED1);
AidasL 23:708cc5ef2604 8 uint16_t customServiceUUID = 0xABCD;
AidasL 23:708cc5ef2604 9 uint16_t readCharUUID = 0xABCE;
AidasL 23:708cc5ef2604 10 uint16_t writeCharUUID = 0xABCF;
AidasL 23:708cc5ef2604 11
AidasL 23:708cc5ef2604 12 static volatile bool triggerSensorPolling = false;
AidasL 23:708cc5ef2604 13
AidasL 23:708cc5ef2604 14
AidasL 23:708cc5ef2604 15 const static char DEVICE_NAME[] = "WorkGloves"; // change this
mbedAustin 8:60ede963dfe2 16 static const uint16_t uuid16_list[] = {0xFFFF}; //Custom UUID, FFFF is reserved for development
mbedAustin 1:94152e7d8b5c 17
andresag 22:406127954d1f 18 /* Set Up custom Characteristics */
AidasL 23:708cc5ef2604 19 static uint16_t readValue[24] = {0x55, 0x33};
AidasL 23:708cc5ef2604 20 ReadOnlyArrayGattCharacteristic<uint16_t, sizeof(readValue)> readChar(readCharUUID, readValue);
mbedAustin 2:e84c13abc479 21
AidasL 23:708cc5ef2604 22 static uint8_t writeValue[8] = {0x00};
mbedAustin 12:6d1f77d0cb37 23 WriteOnlyArrayGattCharacteristic<uint8_t, sizeof(writeValue)> writeChar(writeCharUUID, writeValue);
mbedAustin 2:e84c13abc479 24
AidasL 23:708cc5ef2604 25
andresag 22:406127954d1f 26 /* Set up custom service */
mbedAustin 8:60ede963dfe2 27 GattCharacteristic *characteristics[] = {&readChar, &writeChar};
AidasL 23:708cc5ef2604 28 GattService customService(customServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
AidasL 23:708cc5ef2604 29
AidasL 23:708cc5ef2604 30 void dump(Datapacket todump)
AidasL 23:708cc5ef2604 31 {
AidasL 23:708cc5ef2604 32 uint8_t j;
AidasL 23:708cc5ef2604 33 for (j=0; j<12; j++)
AidasL 23:708cc5ef2604 34 {
AidasL 23:708cc5ef2604 35 readValue[j]=todump.flex[j];
AidasL 23:708cc5ef2604 36 }
AidasL 23:708cc5ef2604 37 for(j=12; j<18; j++)
AidasL 23:708cc5ef2604 38 {
AidasL 23:708cc5ef2604 39 readValue[j]=todump.acc[0][j%6];
AidasL 23:708cc5ef2604 40 }
AidasL 23:708cc5ef2604 41
AidasL 23:708cc5ef2604 42 for(j=18; j<24; j++)
AidasL 23:708cc5ef2604 43 {
AidasL 23:708cc5ef2604 44 readValue[j]=todump.acc[1][j%6];
AidasL 23:708cc5ef2604 45 }
AidasL 23:708cc5ef2604 46
AidasL 23:708cc5ef2604 47
AidasL 23:708cc5ef2604 48
AidasL 23:708cc5ef2604 49 }
mbedAustin 2:e84c13abc479 50
mbedAustin 2:e84c13abc479 51
mbedAustin 8:60ede963dfe2 52 /*
mbedAustin 8:60ede963dfe2 53 * Restart advertising when phone app disconnects
AidasL 23:708cc5ef2604 54 */
andresag 19:477567297aac 55 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *)
mbedAustin 1:94152e7d8b5c 56 {
AidasL 23:708cc5ef2604 57 BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising();
AidasL 23:708cc5ef2604 58 }
AidasL 23:708cc5ef2604 59
AidasL 23:708cc5ef2604 60 void periodicCallback(void)
AidasL 23:708cc5ef2604 61 {
AidasL 23:708cc5ef2604 62 led = !led; /* Do blinky on LED1 while we're waiting for BLE events */
AidasL 23:708cc5ef2604 63
AidasL 23:708cc5ef2604 64 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
AidasL 23:708cc5ef2604 65 * heavy-weight sensor polling from the main thread. */
AidasL 23:708cc5ef2604 66 triggerSensorPolling = true;
mbedAustin 1:94152e7d8b5c 67 }
mbedAustin 0:cd5b6733aeb1 68
andresag 19:477567297aac 69 /*
AidasL 23:708cc5ef2604 70 * Handle writes to writeCharacteristic for screen data from phone
AidasL 23:708cc5ef2604 71 */
melmon 18:7d89c4fba362 72 void writeCharCallback(const GattWriteCallbackParams *params)
mbedAustin 3:0fb60f81f693 73 {
AidasL 23:708cc5ef2604 74 /* Check to see what characteristic was written, by handle */
AidasL 23:708cc5ef2604 75 if(params->handle == writeChar.getValueHandle()) {
AidasL 23:708cc5ef2604 76 /* Update the readChar with the value of writeChar */
AidasL 23:708cc5ef2604 77 // BLE::Instance(BLE::DEFAULT_INSTANCE).gattServer().write(readChar.getValueHandle(), params->data, params->len);
mbedAustin 8:60ede963dfe2 78 }
mbedAustin 3:0fb60f81f693 79 }
andresag 22:406127954d1f 80 /*
andresag 22:406127954d1f 81 * Initialization callback
andresag 22:406127954d1f 82 */
andresag 22:406127954d1f 83 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
andresag 22:406127954d1f 84 {
AidasL 23:708cc5ef2604 85 BLE &ble = params->ble;
AidasL 23:708cc5ef2604 86 ble_error_t error = params->error;
mbedAustin 0:cd5b6733aeb1 87
AidasL 23:708cc5ef2604 88 if (error != BLE_ERROR_NONE) {
AidasL 23:708cc5ef2604 89 return;
AidasL 23:708cc5ef2604 90 }
AidasL 23:708cc5ef2604 91
AidasL 23:708cc5ef2604 92 ble.gap().onDisconnection(disconnectionCallback);
AidasL 23:708cc5ef2604 93 ble.gattServer().onDataWritten(writeCharCallback); // TODO: update to flush screen !!!
mbedAustin 2:e84c13abc479 94
AidasL 23:708cc5ef2604 95 /* Setup advertising */
AidasL 23:708cc5ef2604 96 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); // BLE only, no classic BT
AidasL 23:708cc5ef2604 97 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); // advertising type
AidasL 23:708cc5ef2604 98 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); // add name
AidasL 23:708cc5ef2604 99 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); // UUID's broadcast in advertising packet
AidasL 23:708cc5ef2604 100 ble.gap().setAdvertisingInterval(500); // 500ms.
mbedAustin 2:e84c13abc479 101
AidasL 23:708cc5ef2604 102 /* Add our custom service */
AidasL 23:708cc5ef2604 103 ble.addService(customService);
mbedAustin 2:e84c13abc479 104
AidasL 23:708cc5ef2604 105 /* Start advertising */
AidasL 23:708cc5ef2604 106 ble.gap().startAdvertising();
andresag 22:406127954d1f 107 }
andresag 19:477567297aac 108
andresag 22:406127954d1f 109 /*
andresag 22:406127954d1f 110 * Main loop
AidasL 23:708cc5ef2604 111 */
andresag 22:406127954d1f 112 int main(void)
andresag 22:406127954d1f 113 {
AidasL 23:708cc5ef2604 114 /* initialize stuff */
AidasL 23:708cc5ef2604 115 // printf("\n\r********* Starting Main Loop *********\n\r");
AidasL 23:708cc5ef2604 116
AidasL 23:708cc5ef2604 117 led = 1;
AidasL 23:708cc5ef2604 118 Ticker ticker;
AidasL 23:708cc5ef2604 119 ticker.attach(periodicCallback, 0.1); // blink LED every 0.5 second
AidasL 23:708cc5ef2604 120 BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
AidasL 23:708cc5ef2604 121 ble.init(bleInitComplete);
andresag 22:406127954d1f 122
AidasL 23:708cc5ef2604 123 /* SpinWait for initialization to complete. This is necessary because the
AidasL 23:708cc5ef2604 124 * BLE object is used in the main loop below. */
AidasL 23:708cc5ef2604 125 while (ble.hasInitialized() == false) { /* spin loop */ }
AidasL 23:708cc5ef2604 126 uint16_t data[24] = {0x11, 0x22};
AidasL 23:708cc5ef2604 127 /* Infinite loop waiting for BLE interrupt events */
AidasL 23:708cc5ef2604 128 while (1) {
AidasL 23:708cc5ef2604 129 // check for trigger// from periodicCallback()
AidasL 23:708cc5ef2604 130 if (triggerSensorPolling && ble.getGapState().connected) {
AidasL 23:708cc5ef2604 131 triggerSensorPolling = false;
AidasL 23:708cc5ef2604 132 data[1] = data[1]+1;
AidasL 23:708cc5ef2604 133 BLE::Instance(BLE::DEFAULT_INSTANCE).gattServer().write(readChar.getValueHandle(), (uint8_t*)data , 48 );
AidasL 23:708cc5ef2604 134
AidasL 23:708cc5ef2604 135 }
AidasL 23:708cc5ef2604 136 else {
AidasL 23:708cc5ef2604 137 ble.waitForEvent(); // low power wait for event
AidasL 23:708cc5ef2604 138 }
AidasL 23:708cc5ef2604 139 }
AidasL 23:708cc5ef2604 140 }