How to turn a WaveShare nRF51-BLE400 into a discoverable beacon using mbed
Dependencies: mbed BLE_API nRF51822
Port for WaveShare BLE400 (chip nRF51 Aliexpress devboard)
Android Evothings good example for Nordic nRF51822-DK
As target for mbed-online used <Nordic nRF51822>
- (Large green board Nordic nRF51822-mKIT, actually deprecated on 01/03/2019)
Briefly: Handle via Evothings BLE Application 4 LEDs and 2 Buttons(via notify messages).
Figure 1: Evothings Android application screenshot
Android Evothings application sources
Happy coding!
maxxir 02/03/19
main.cpp@14:1c15d473b42f, 2016-01-12 (annotated)
- Committer:
- andresag
- Date:
- Tue Jan 12 11:58:24 2016 +0000
- Revision:
- 14:1c15d473b42f
- Parent:
- 13:827dd2b32bb8
- Child:
- 15:7e06fce6e4f8
Update example to latest BLE API.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbedAustin | 0:5375be4301ed | 1 | #include "mbed.h" |
andresag | 14:1c15d473b42f | 2 | #include "ble/BLE.h" |
andresag | 14:1c15d473b42f | 3 | |
andresag | 14:1c15d473b42f | 4 | /* Optional: Device Name, add for human read-ability */ |
andresag | 14:1c15d473b42f | 5 | const static char DEVICE_NAME[] = "ChangeMe!!"; |
andresag | 14:1c15d473b42f | 6 | |
andresag | 14:1c15d473b42f | 7 | /* You have up to 26 bytes of advertising data to use. */ |
andresag | 14:1c15d473b42f | 8 | const static uint8_t AdvData[] = {0x01,0x02,0x03,0x04,0x05}; /* Example of hex data */ |
andresag | 14:1c15d473b42f | 9 | //const static uint8_t AdvData[] = {"ChangeThisData"}; /* Example of character data */ |
mbedAustin | 0:5375be4301ed | 10 | |
andresag | 14:1c15d473b42f | 11 | /* Optional: Restart advertising when peer disconnects */ |
andresag | 14:1c15d473b42f | 12 | void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) |
andresag | 14:1c15d473b42f | 13 | { |
andresag | 14:1c15d473b42f | 14 | BLE::Instance().gap().startAdvertising(); |
andresag | 14:1c15d473b42f | 15 | } |
andresag | 14:1c15d473b42f | 16 | /** |
andresag | 14:1c15d473b42f | 17 | * This function is called when the ble initialization process has failed |
andresag | 14:1c15d473b42f | 18 | */ |
andresag | 14:1c15d473b42f | 19 | void onBleInitError(BLE &ble, ble_error_t error) |
andresag | 14:1c15d473b42f | 20 | { |
andresag | 14:1c15d473b42f | 21 | /* Avoid compiler warnings */ |
andresag | 14:1c15d473b42f | 22 | (void) ble; |
andresag | 14:1c15d473b42f | 23 | (void) error; |
andresag | 14:1c15d473b42f | 24 | |
andresag | 14:1c15d473b42f | 25 | /* Initialization error handling should go here */ |
andresag | 14:1c15d473b42f | 26 | } |
mbedAustin | 0:5375be4301ed | 27 | |
andresag | 14:1c15d473b42f | 28 | /** |
andresag | 14:1c15d473b42f | 29 | * Callback triggered when the ble initialization process has finished |
andresag | 14:1c15d473b42f | 30 | */ |
andresag | 14:1c15d473b42f | 31 | void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) |
andresag | 14:1c15d473b42f | 32 | { |
andresag | 14:1c15d473b42f | 33 | BLE& ble = params->ble; |
andresag | 14:1c15d473b42f | 34 | ble_error_t error = params->error; |
andresag | 14:1c15d473b42f | 35 | |
andresag | 14:1c15d473b42f | 36 | if (error != BLE_ERROR_NONE) { |
andresag | 14:1c15d473b42f | 37 | /* In case of error, forward the error handling to onBleInitError */ |
andresag | 14:1c15d473b42f | 38 | onBleInitError(ble, error); |
andresag | 14:1c15d473b42f | 39 | return; |
andresag | 14:1c15d473b42f | 40 | } |
mbedAustin | 5:fff16d283dcf | 41 | |
andresag | 14:1c15d473b42f | 42 | /* Ensure that it is the default instance of BLE */ |
andresag | 14:1c15d473b42f | 43 | if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { |
andresag | 14:1c15d473b42f | 44 | return; |
andresag | 14:1c15d473b42f | 45 | } |
andresag | 14:1c15d473b42f | 46 | |
andresag | 14:1c15d473b42f | 47 | /* Set device name characteristic data */ |
andresag | 14:1c15d473b42f | 48 | ble.gap().setDeviceName((const uint8_t *) DEVICE_NAME); |
andresag | 14:1c15d473b42f | 49 | |
andresag | 14:1c15d473b42f | 50 | /* Optional: add callback for disconnection */ |
andresag | 14:1c15d473b42f | 51 | ble.gap().onDisconnection(disconnectionCallback); |
mbedAustin | 1:0692bee84264 | 52 | |
andresag | 14:1c15d473b42f | 53 | /* Sacrifice 3B of 31B to Advertising Flags */ |
andresag | 14:1c15d473b42f | 54 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE ); |
andresag | 14:1c15d473b42f | 55 | ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
andresag | 14:1c15d473b42f | 56 | |
andresag | 14:1c15d473b42f | 57 | /* Sacrifice 2B of 31B to AdvType overhead, rest goes to AdvData array you define */ |
andresag | 14:1c15d473b42f | 58 | ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData)); |
andresag | 14:1c15d473b42f | 59 | |
andresag | 14:1c15d473b42f | 60 | /* Optional: Add name to device */ |
andresag | 14:1c15d473b42f | 61 | //ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
andresag | 14:1c15d473b42f | 62 | |
andresag | 14:1c15d473b42f | 63 | /* Set advertising interval. Longer interval == longer battery life */ |
andresag | 14:1c15d473b42f | 64 | ble.gap().setAdvertisingInterval(100); /* 100ms */ |
andresag | 14:1c15d473b42f | 65 | |
andresag | 14:1c15d473b42f | 66 | /* Start advertising */ |
andresag | 14:1c15d473b42f | 67 | ble.gap().startAdvertising(); |
mbedAustin | 8:5442739198ec | 68 | } |
mbedAustin | 8:5442739198ec | 69 | |
mbedAustin | 1:0692bee84264 | 70 | int main(void) |
mbedAustin | 0:5375be4301ed | 71 | { |
andresag | 14:1c15d473b42f | 72 | BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE); |
andresag | 14:1c15d473b42f | 73 | |
andresag | 14:1c15d473b42f | 74 | /* Initialize BLE baselayer, always do this first! */ |
andresag | 14:1c15d473b42f | 75 | ble.init(bleInitComplete); |
mbedAustin | 1:0692bee84264 | 76 | |
andresag | 14:1c15d473b42f | 77 | /* Infinite loop waiting for BLE events */ |
andresag | 14:1c15d473b42f | 78 | while (true) { |
andresag | 14:1c15d473b42f | 79 | /* Save power while waiting for callback events */ |
andresag | 14:1c15d473b42f | 80 | ble.waitForEvent(); |
mbedAustin | 1:0692bee84264 | 81 | } |
mbedAustin | 1:0692bee84264 | 82 | } |