Aidan Jabbarzadeh / Mbed 2 deprecated Transmitter

ble transmitter

Dependencies:   mbed BLE_API nRF51822

transmitter_main.cpp@9:aa9d34bbb46c, 2019-04-19 (annotated)

Committer:
khyein8154
Date:
Fri Apr 19 07:03:57 2019 +0000
Revision:
9:aa9d34bbb46c
Parent:
8:2d82653c8ffd 
Increment the sequence number and send new packets with increasing sequence number

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
khyein8154 5:c7bbaa34373a 4 Serial pc(USBTX, USBRX);
khyein8154 5:c7bbaa34373a 5
aidanjabb 0:37b6e6dc1a2f 6 #define LED_RED p22
jzabins2 2:f8dfdded83bf 7 #define LED_GREEN p21
jzabins2 2:f8dfdded83bf 8 #define LED_BLUE p23
jzabins2 2:f8dfdded83bf 9 #define BUTTON_PIN p17
jzabins2 2:f8dfdded83bf 10 #define BATTERY_PIN p1
jzabins2 2:f8dfdded83bf 11
khyein8154 9:aa9d34bbb46c 12 DigitalOut greenLed(LED_GREEN);
aidanjabb 0:37b6e6dc1a2f 13
jzabins2 2:f8dfdded83bf 14 struct Packet {
khyein8154 9:aa9d34bbb46c 15 uint8_t seqNum;
jzabins2 4:c3123e9e7d39 16
jzabins2 4:c3123e9e7d39 17 Packet() : seqNum(0) {}
jzabins2 2:f8dfdded83bf 18 };
khyein8154 9:aa9d34bbb46c 19 uint8_t seqNum2 = 7;
jzabins2 2:f8dfdded83bf 20
jzabins2 3:76b8337374e7 21 BLE ble;
khyein8154 9:aa9d34bbb46c 22 Packet packet;
khyein8154 9:aa9d34bbb46c 23 const static char DEVICE_NAME[] = "Transmitter";
aidanjabb 0:37b6e6dc1a2f 24 static volatile bool triggerSensorPolling = false;
jzabins2 3:76b8337374e7 25
aidanjabb 0:37b6e6dc1a2f 26 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
aidanjabb 0:37b6e6dc1a2f 27 {
khyein8154 9:aa9d34bbb46c 28 ble.gap().startAdvertising(); // restart advertising
jzabins2 3:76b8337374e7 29 }
jzabins2 3:76b8337374e7 30
aidanjabb 0:37b6e6dc1a2f 31 void periodicCallback(void)
aidanjabb 0:37b6e6dc1a2f 32 {
khyein8154 9:aa9d34bbb46c 33 greenLed = !greenLed; /* Do blinky on greenLed while we're waiting for BLE events */
khyein8154 9:aa9d34bbb46c 34 //we can't do anything related gap() inside here!
khyein8154 9:aa9d34bbb46c 35 //will get error and fault handler will be triggered
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 {
khyein8154 9:aa9d34bbb46c 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
khyein8154 9:aa9d34bbb46c 51 /* Ensure that it is the default instance of BLE */
khyein8154 9:aa9d34bbb46c 52 if (localBle.getInstanceID() != BLE::DEFAULT_INSTANCE) {
khyein8154 9:aa9d34bbb46c 53 return;
khyein8154 9:aa9d34bbb46c 54 }
jzabins2 3:76b8337374e7 55
khyein8154 9:aa9d34bbb46c 56 localBle.gap().onDisconnection(disconnectionCallback);
jzabins2 8:2d82653c8ffd 57
khyein8154 9:aa9d34bbb46c 58 // localBle.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
khyein8154 9:aa9d34bbb46c 59 // localBle.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
khyein8154 9:aa9d34bbb46c 60 // localBle.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&packet, sizeof(packet));
khyein8154 9:aa9d34bbb46c 61 localBle.gap().clearAdvertisingPayload();
khyein8154 9:aa9d34bbb46c 62 localBle.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&packet.seqNum, sizeof(packet.seqNum));
khyein8154 9:aa9d34bbb46c 63 pc.printf("73: payload: %x\n", localBle.gap().getAdvertisingPayload());
aidanjabb 0:37b6e6dc1a2f 64 }
jzabins2 3:76b8337374e7 65
aidanjabb 0:37b6e6dc1a2f 66 int main(void)
aidanjabb 0:37b6e6dc1a2f 67 {
khyein8154 9:aa9d34bbb46c 68 greenLed = 1;
jzabins2 3:76b8337374e7 69
aidanjabb 0:37b6e6dc1a2f 70 Ticker ticker;
khyein8154 9:aa9d34bbb46c 71 ticker.attach(periodicCallback, 5);
jzabins2 3:76b8337374e7 72
aidanjabb 0:37b6e6dc1a2f 73 ble.init(bleInitComplete);
aidanjabb 0:37b6e6dc1a2f 74
aidanjabb 0:37b6e6dc1a2f 75 /* SpinWait for initialization to complete. This is necessary because the
aidanjabb 0:37b6e6dc1a2f 76 * BLE object is used in the main loop below. */
khyein8154 9:aa9d34bbb46c 77 while (ble.hasInitialized() == false) {
khyein8154 9:aa9d34bbb46c 78 pc.printf("Initializing BLE\n");
khyein8154 9:aa9d34bbb46c 79 }
khyein8154 9:aa9d34bbb46c 80
khyein8154 9:aa9d34bbb46c 81 pc.printf("Init Completed\n");
khyein8154 9:aa9d34bbb46c 82
khyein8154 9:aa9d34bbb46c 83 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
khyein8154 9:aa9d34bbb46c 84 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
khyein8154 9:aa9d34bbb46c 85 ble.gap().setAdvertisingTimeout(0);
khyein8154 9:aa9d34bbb46c 86 ble.gap().startAdvertising();
aidanjabb 0:37b6e6dc1a2f 87
aidanjabb 0:37b6e6dc1a2f 88 while (1) {
aidanjabb 0:37b6e6dc1a2f 89 // check for trigger from periodicCallback()
khyein8154 9:aa9d34bbb46c 90 if (triggerSensorPolling) {
khyein8154 9:aa9d34bbb46c 91 (packet.seqNum)++;
khyein8154 9:aa9d34bbb46c 92 pc.printf("seq_num: %d\n", packet.seqNum);
khyein8154 9:aa9d34bbb46c 93 ble.gap().clearAdvertisingPayload();
khyein8154 9:aa9d34bbb46c 94 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&packet.seqNum, sizeof(packet.seqNum));
khyein8154 9:aa9d34bbb46c 95 pc.printf("47: payload: %x\n", ble.gap().getAdvertisingPayload());
khyein8154 9:aa9d34bbb46c 96
aidanjabb 0:37b6e6dc1a2f 97 triggerSensorPolling = false;
khyein8154 9:aa9d34bbb46c 98 }
khyein8154 9:aa9d34bbb46c 99 ble.waitForEvent();
aidanjabb 0:37b6e6dc1a2f 100 }
aidanjabb 0:37b6e6dc1a2f 101 }