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@4:d602b1c3aef4, 2015-03-10 (annotated)

Committer:
mbedAustin
Date:
Tue Mar 10 20:32:37 2015 +0000
Revision:
4:d602b1c3aef4
Parent:
3:e9646631084f
Child:
5:fff16d283dcf
made device connectable instead of non-connectable, this is to allow iOS devices to connect and display the advertising info, because no iOS app will just show the advertising data, they have to connect... grrr....

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 1:0692bee84264 1
mbedAustin 1:0692bee84264 2 // Headers necessary for mbed and BLE device mode
mbedAustin 0:5375be4301ed 3 #include "mbed.h"
mbedAustin 0:5375be4301ed 4 #include "BLEDevice.h"
mbedAustin 0:5375be4301ed 5
mbedAustin 1:0692bee84264 6 // BLE object
mbedAustin 1:0692bee84264 7 BLEDevice ble;
mbedAustin 0:5375be4301ed 8
mbedAustin 1:0692bee84264 9 /**
mbedAustin 1:0692bee84264 10 You have up to 26 bytes of advertising data to use.
mbedAustin 1:0692bee84264 11 Make up your own encoding for these 26bytes, send it across
mbedAustin 1:0692bee84264 12 and decode it using the evothings app.
mbedAustin 1:0692bee84264 13 */
mbedAustin 4:d602b1c3aef4 14 //const static uint8_t AdvData[] = {"ChangeThisData"}; // example of character data
mbedAustin 4:d602b1c3aef4 15 const static uint8_t AdvData[] = {0x01,0x02,0x03,0x04,0x05}; // example of hex data
mbedAustin 1:0692bee84264 16
mbedAustin 1:0692bee84264 17 // main program
mbedAustin 1:0692bee84264 18 int main(void)
mbedAustin 0:5375be4301ed 19 {
mbedAustin 1:0692bee84264 20 // Initialize BLE baselayer, always do this first!
mbedAustin 1:0692bee84264 21 ble.init();
mbedAustin 1:0692bee84264 22
mbedAustin 1:0692bee84264 23 // Sacrifice 3B of 31B to Advertising Flags
mbedAustin 1:0692bee84264 24 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE );
mbedAustin 4:d602b1c3aef4 25 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
mbedAustin 1:0692bee84264 26
mbedAustin 1:0692bee84264 27 // Sacrifice 2B of 31B to AdvType overhead, rest goes to AdvData array you define
mbedAustin 1:0692bee84264 28 ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
mbedAustin 1:0692bee84264 29
mbedAustin 1:0692bee84264 30 // Set advertising interval. Longer interval = longer battery life
mbedAustin 1:0692bee84264 31 ble.setAdvertisingInterval(160); // 100ms; in multiples of 0.625ms.
mbedAustin 1:0692bee84264 32 ble.startAdvertising();
mbedAustin 1:0692bee84264 33
mbedAustin 1:0692bee84264 34 // Infinite loop waiting for BLE events
mbedAustin 1:0692bee84264 35 for (;;) {
mbedAustin 1:0692bee84264 36 ble.waitForEvent(); // this saves battery
mbedAustin 1:0692bee84264 37 }
mbedAustin 1:0692bee84264 38 }