Aidan Jabbarzadeh / Mbed 2 deprecated Transmitter

ble transmitter

Dependencies:   mbed BLE_API nRF51822

transmitter_main.cpp@3:76b8337374e7, 2019-04-17 (annotated)

Committer:
jzabins2
Date:
Wed Apr 17 21:05:11 2019 +0000
Revision:
3:76b8337374e7
Parent:
2:f8dfdded83bf
Child:
4:c3123e9e7d39
Added update payload

Who changed what in which revision?

UserRevisionLine numberNew contents of line
aidanjabb 0:37b6e6dc1a2f 1 #include "mbed.h"
aidanjabb 0:37b6e6dc1a2f 2 #include "ble/BLE.h"
jzabins2 2:f8dfdded83bf 3
aidanjabb 0:37b6e6dc1a2f 4 #define LED_RED p22
jzabins2 2:f8dfdded83bf 5 #define LED_GREEN p21
jzabins2 2:f8dfdded83bf 6 #define LED_BLUE p23
jzabins2 2:f8dfdded83bf 7 #define BUTTON_PIN p17
jzabins2 2:f8dfdded83bf 8 #define BATTERY_PIN p1
jzabins2 2:f8dfdded83bf 9
aidanjabb 0:37b6e6dc1a2f 10 DigitalOut led1(p21);
aidanjabb 0:37b6e6dc1a2f 11
jzabins2 2:f8dfdded83bf 12 struct Packet {
jzabins2 3:76b8337374e7 13 uint32_t seqNum;
jzabins2 2:f8dfdded83bf 14 };
jzabins2 2:f8dfdded83bf 15
jzabins2 3:76b8337374e7 16 BLE ble;
jzabins2 3:76b8337374e7 17 const static char DEVICE_NAME[] = "JOEY";
aidanjabb 0:37b6e6dc1a2f 18 static volatile bool triggerSensorPolling = false;
jzabins2 3:76b8337374e7 19
aidanjabb 0:37b6e6dc1a2f 20 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
aidanjabb 0:37b6e6dc1a2f 21 {
aidanjabb 0:37b6e6dc1a2f 22 BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising(); // restart advertising
aidanjabb 0:37b6e6dc1a2f 23 }
jzabins2 3:76b8337374e7 24
jzabins2 3:76b8337374e7 25 void updatePayload(void)
jzabins2 3:76b8337374e7 26 {
jzabins2 3:76b8337374e7 27 static Packet p;
jzabins2 3:76b8337374e7 28 ble.gap().updateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&p, sizeof(p));
jzabins2 3:76b8337374e7 29 (p.seqNum)++;
jzabins2 3:76b8337374e7 30 }
jzabins2 3:76b8337374e7 31
aidanjabb 0:37b6e6dc1a2f 32 void periodicCallback(void)
aidanjabb 0:37b6e6dc1a2f 33 {
aidanjabb 0:37b6e6dc1a2f 34 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
jzabins2 3:76b8337374e7 35 updatePayload();
jzabins2 3:76b8337374e7 36
aidanjabb 0:37b6e6dc1a2f 37 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
aidanjabb 0:37b6e6dc1a2f 38 * heavy-weight sensor polling from the main thread. */
aidanjabb 0:37b6e6dc1a2f 39 triggerSensorPolling = true;
aidanjabb 0:37b6e6dc1a2f 40 }
jzabins2 3:76b8337374e7 41
aidanjabb 0:37b6e6dc1a2f 42 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
aidanjabb 0:37b6e6dc1a2f 43 {
jzabins2 3:76b8337374e7 44 BLE &localble = params->ble;
aidanjabb 0:37b6e6dc1a2f 45 ble_error_t error = params->error;
jzabins2 3:76b8337374e7 46
aidanjabb 0:37b6e6dc1a2f 47 if (error != BLE_ERROR_NONE) {
aidanjabb 0:37b6e6dc1a2f 48 return;
aidanjabb 0:37b6e6dc1a2f 49 }
jzabins2 3:76b8337374e7 50
jzabins2 3:76b8337374e7 51 localble.gap().onDisconnection(disconnectionCallback);
jzabins2 3:76b8337374e7 52
jzabins2 3:76b8337374e7 53 localble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
jzabins2 3:76b8337374e7 54 updatePayload();
jzabins2 3:76b8337374e7 55
jzabins2 3:76b8337374e7 56 localble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
jzabins2 3:76b8337374e7 57 localble.gap().setAdvertisingInterval(1000); /* 1000ms */
jzabins2 3:76b8337374e7 58 localble.gap().startAdvertising();
aidanjabb 0:37b6e6dc1a2f 59 }
jzabins2 3:76b8337374e7 60
aidanjabb 0:37b6e6dc1a2f 61 int main(void)
aidanjabb 0:37b6e6dc1a2f 62 {
aidanjabb 0:37b6e6dc1a2f 63 led1 = 1;
jzabins2 3:76b8337374e7 64
aidanjabb 0:37b6e6dc1a2f 65 Ticker ticker;
jzabins2 3:76b8337374e7 66 ticker.attach(periodicCallback, 1);
jzabins2 3:76b8337374e7 67
aidanjabb 0:37b6e6dc1a2f 68 ble.init(bleInitComplete);
aidanjabb 0:37b6e6dc1a2f 69
aidanjabb 0:37b6e6dc1a2f 70 /* SpinWait for initialization to complete. This is necessary because the
aidanjabb 0:37b6e6dc1a2f 71 * BLE object is used in the main loop below. */
aidanjabb 0:37b6e6dc1a2f 72 while (ble.hasInitialized() == false) { /* spin loop */ }
aidanjabb 0:37b6e6dc1a2f 73
aidanjabb 0:37b6e6dc1a2f 74 while (1) {
aidanjabb 0:37b6e6dc1a2f 75 // check for trigger from periodicCallback()
aidanjabb 0:37b6e6dc1a2f 76 if (triggerSensorPolling && ble.getGapState().connected) {
aidanjabb 0:37b6e6dc1a2f 77 triggerSensorPolling = false;
aidanjabb 0:37b6e6dc1a2f 78 } else {
aidanjabb 0:37b6e6dc1a2f 79 ble.waitForEvent(); // low power wait for event
aidanjabb 0:37b6e6dc1a2f 80 }
aidanjabb 0:37b6e6dc1a2f 81 }
aidanjabb 0:37b6e6dc1a2f 82 }