Maxim Ibragimov / Mbed 2 deprecated BLE_Evothings_NRF51822-BLE400

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

Evothings application screenshot

Android Evothings application sources

Android application APK

Happy coding!
maxxir 02/03/19

main.cpp

Committer:
mbedAustin
Date:
2015-03-10
Revision:
4:d602b1c3aef4
Parent:
3:e9646631084f
Child:
5:fff16d283dcf

File content as of revision 4:d602b1c3aef4:


// Headers necessary for mbed and BLE device mode
#include "mbed.h"
#include "BLEDevice.h"

// BLE object
BLEDevice ble;

/**
  You have up to 26 bytes of advertising data to use.
  Make up your own encoding for these 26bytes, send it across
  and decode it using the evothings app.
 */
//const static uint8_t AdvData[] = {"ChangeThisData"};             // example of character data
const static uint8_t AdvData[] = {0x01,0x02,0x03,0x04,0x05};   // example of hex data

// main program
int main(void)
{
    // Initialize BLE baselayer, always do this first!
    ble.init();

    // Sacrifice 3B of 31B to Advertising Flags
    ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE );
    ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);

    // Sacrifice 2B of 31B to AdvType overhead, rest goes to AdvData array you define
    ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));

    // Set advertising interval. Longer interval = longer battery life
    ble.setAdvertisingInterval(160); // 100ms; in multiples of 0.625ms.
    ble.startAdvertising();

    // Infinite loop waiting for BLE events
    for (;;) {
        ble.waitForEvent(); // this saves battery
    }
}