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@7:f9a2fa5b1d43, 2015-03-10 (annotated)

Committer:
mbedAustin
Date:
Tue Mar 10 22:42:14 2015 +0000
Revision:
7:f9a2fa5b1d43
Parent:
6:a7595838d240
Child:
8:5442739198ec
changed default advertising data as most phones display it in hex, not ascii

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 5:fff16d283dcf 9 //const static char DEVICE_NAME[] = "ChangeMe!!"; // change this
mbedAustin 5:fff16d283dcf 10
mbedAustin 1:0692bee84264 11 /**
mbedAustin 1:0692bee84264 12 You have up to 26 bytes of advertising data to use.
mbedAustin 1:0692bee84264 13 Make up your own encoding for these 26bytes, send it across
mbedAustin 1:0692bee84264 14 and decode it using the evothings app.
mbedAustin 1:0692bee84264 15 */
mbedAustin 7:f9a2fa5b1d43 16 //const static uint8_t AdvData[] = {"ChangeThisData"}; // example of character data
mbedAustin 7:f9a2fa5b1d43 17 const static uint8_t AdvData[] = {0x01,0x02,0x03,0x04,0x05}; // example of hex data
mbedAustin 1:0692bee84264 18
mbedAustin 1:0692bee84264 19 // main program
mbedAustin 1:0692bee84264 20 int main(void)
mbedAustin 0:5375be4301ed 21 {
mbedAustin 1:0692bee84264 22 // Initialize BLE baselayer, always do this first!
mbedAustin 1:0692bee84264 23 ble.init();
mbedAustin 1:0692bee84264 24
mbedAustin 1:0692bee84264 25 // Sacrifice 3B of 31B to Advertising Flags
mbedAustin 1:0692bee84264 26 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE );
mbedAustin 4:d602b1c3aef4 27 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
mbedAustin 1:0692bee84264 28
mbedAustin 1:0692bee84264 29 // Sacrifice 2B of 31B to AdvType overhead, rest goes to AdvData array you define
mbedAustin 1:0692bee84264 30 ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
mbedAustin 5:fff16d283dcf 31
mbedAustin 5:fff16d283dcf 32 // Add name to device
mbedAustin 5:fff16d283dcf 33 //ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
mbedAustin 1:0692bee84264 34
mbedAustin 1:0692bee84264 35 // Set advertising interval. Longer interval = longer battery life
mbedAustin 1:0692bee84264 36 ble.setAdvertisingInterval(160); // 100ms; in multiples of 0.625ms.
mbedAustin 1:0692bee84264 37 ble.startAdvertising();
mbedAustin 1:0692bee84264 38
mbedAustin 1:0692bee84264 39 // Infinite loop waiting for BLE events
mbedAustin 1:0692bee84264 40 for (;;) {
mbedAustin 1:0692bee84264 41 ble.waitForEvent(); // this saves battery
mbedAustin 1:0692bee84264 42 }
mbedAustin 1:0692bee84264 43 }