Aidan Jabbarzadeh / Mbed 2 deprecated Transmitter

ble transmitter

Dependencies:   mbed BLE_API nRF51822

transmitter_main.cpp@4:c3123e9e7d39, 2019-04-17 (annotated)

Committer:
jzabins2
Date:
Wed Apr 17 21:10:33 2019 +0000
Revision:
4:c3123e9e7d39
Parent:
3:76b8337374e7
Child:
5:c7bbaa34373a
Added default constructor for Packet

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 4:c3123e9e7d39 14
jzabins2 4:c3123e9e7d39 15 Packet() : seqNum(0) {}
jzabins2 2:f8dfdded83bf 16 };
jzabins2 2:f8dfdded83bf 17
jzabins2 3:76b8337374e7 18 BLE ble;
jzabins2 3:76b8337374e7 19 const static char DEVICE_NAME[] = "JOEY";
aidanjabb 0:37b6e6dc1a2f 20 static volatile bool triggerSensorPolling = false;
jzabins2 3:76b8337374e7 21
aidanjabb 0:37b6e6dc1a2f 22 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
aidanjabb 0:37b6e6dc1a2f 23 {
aidanjabb 0:37b6e6dc1a2f 24 BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising(); // restart advertising
aidanjabb 0:37b6e6dc1a2f 25 }
jzabins2 3:76b8337374e7 26
jzabins2 3:76b8337374e7 27 void updatePayload(void)
jzabins2 3:76b8337374e7 28 {
jzabins2 3:76b8337374e7 29 static Packet p;
jzabins2 3:76b8337374e7 30 ble.gap().updateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&p, sizeof(p));
jzabins2 3:76b8337374e7 31 (p.seqNum)++;
jzabins2 3:76b8337374e7 32 }
jzabins2 3:76b8337374e7 33
aidanjabb 0:37b6e6dc1a2f 34 void periodicCallback(void)
aidanjabb 0:37b6e6dc1a2f 35 {
aidanjabb 0:37b6e6dc1a2f 36 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
jzabins2 3:76b8337374e7 37 updatePayload();
jzabins2 3:76b8337374e7 38
aidanjabb 0:37b6e6dc1a2f 39 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
aidanjabb 0:37b6e6dc1a2f 40 * heavy-weight sensor polling from the main thread. */
aidanjabb 0:37b6e6dc1a2f 41 triggerSensorPolling = true;
aidanjabb 0:37b6e6dc1a2f 42 }
jzabins2 3:76b8337374e7 43
aidanjabb 0:37b6e6dc1a2f 44 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
aidanjabb 0:37b6e6dc1a2f 45 {
jzabins2 3:76b8337374e7 46 BLE &localble = params->ble;
aidanjabb 0:37b6e6dc1a2f 47 ble_error_t error = params->error;
jzabins2 3:76b8337374e7 48
aidanjabb 0:37b6e6dc1a2f 49 if (error != BLE_ERROR_NONE) {
aidanjabb 0:37b6e6dc1a2f 50 return;
aidanjabb 0:37b6e6dc1a2f 51 }
jzabins2 3:76b8337374e7 52
jzabins2 3:76b8337374e7 53 localble.gap().onDisconnection(disconnectionCallback);
jzabins2 3:76b8337374e7 54
jzabins2 3:76b8337374e7 55 localble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
jzabins2 3:76b8337374e7 56 updatePayload();
jzabins2 3:76b8337374e7 57
jzabins2 3:76b8337374e7 58 localble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
jzabins2 3:76b8337374e7 59 localble.gap().setAdvertisingInterval(1000); /* 1000ms */
jzabins2 3:76b8337374e7 60 localble.gap().startAdvertising();
aidanjabb 0:37b6e6dc1a2f 61 }
jzabins2 3:76b8337374e7 62
aidanjabb 0:37b6e6dc1a2f 63 int main(void)
aidanjabb 0:37b6e6dc1a2f 64 {
aidanjabb 0:37b6e6dc1a2f 65 led1 = 1;
jzabins2 3:76b8337374e7 66
aidanjabb 0:37b6e6dc1a2f 67 Ticker ticker;
jzabins2 3:76b8337374e7 68 ticker.attach(periodicCallback, 1);
jzabins2 3:76b8337374e7 69
aidanjabb 0:37b6e6dc1a2f 70 ble.init(bleInitComplete);
aidanjabb 0:37b6e6dc1a2f 71
aidanjabb 0:37b6e6dc1a2f 72 /* SpinWait for initialization to complete. This is necessary because the
aidanjabb 0:37b6e6dc1a2f 73 * BLE object is used in the main loop below. */
aidanjabb 0:37b6e6dc1a2f 74 while (ble.hasInitialized() == false) { /* spin loop */ }
aidanjabb 0:37b6e6dc1a2f 75
aidanjabb 0:37b6e6dc1a2f 76 while (1) {
aidanjabb 0:37b6e6dc1a2f 77 // check for trigger from periodicCallback()
aidanjabb 0:37b6e6dc1a2f 78 if (triggerSensorPolling && ble.getGapState().connected) {
aidanjabb 0:37b6e6dc1a2f 79 triggerSensorPolling = false;
aidanjabb 0:37b6e6dc1a2f 80 } else {
aidanjabb 0:37b6e6dc1a2f 81 ble.waitForEvent(); // low power wait for event
aidanjabb 0:37b6e6dc1a2f 82 }
aidanjabb 0:37b6e6dc1a2f 83 }
aidanjabb 0:37b6e6dc1a2f 84 }