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@13:827dd2b32bb8, 2015-04-02 (annotated)

Committer:
mbedAustin
Date:
Thu Apr 02 21:16:43 2015 +0000
Revision:
13:827dd2b32bb8
Parent:
12:06c984252bd1
Child:
14:1c15d473b42f
removed whitespace and ran code linter/cleanup

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 1:0692bee84264 1 // Headers necessary for mbed and BLE device mode
mbedAustin 0:5375be4301ed 2 #include "mbed.h"
mbedAustin 0:5375be4301ed 3 #include "BLEDevice.h"
mbedAustin 0:5375be4301ed 4
mbedAustin 1:0692bee84264 5 // BLE object
mbedAustin 1:0692bee84264 6 BLEDevice ble;
mbedAustin 0:5375be4301ed 7
mbedAustin 11:c9c0c4586c5f 8 // Optional: Device Name, add for human read-ability
mbedAustin 8:5442739198ec 9 //const static char DEVICE_NAME[] = "ChangeMe!!"; // Optional: device name
mbedAustin 5:fff16d283dcf 10
mbedAustin 11:c9c0c4586c5f 11 // You have up to 26 bytes of advertising data to use.
mbedAustin 13:827dd2b32bb8 12 const static uint8_t AdvData[] = {0x01,0x02,0x03,0x04,0x05}; // example of hex data
mbedAustin 8:5442739198ec 13 //const static uint8_t AdvData[] = {"ChangeThisData"}; // example of character data
mbedAustin 1:0692bee84264 14
mbedAustin 13:827dd2b32bb8 15 // Optional: Restart advertising when phone app disconnects
mbedAustin 13:827dd2b32bb8 16 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
mbedAustin 13:827dd2b32bb8 17 {
mbedAustin 13:827dd2b32bb8 18 ble.startAdvertising();
mbedAustin 8:5442739198ec 19 }
mbedAustin 8:5442739198ec 20
mbedAustin 1:0692bee84264 21 // main program
mbedAustin 1:0692bee84264 22 int main(void)
mbedAustin 0:5375be4301ed 23 {
mbedAustin 1:0692bee84264 24 // Initialize BLE baselayer, always do this first!
mbedAustin 1:0692bee84264 25 ble.init();
mbedAustin 13:827dd2b32bb8 26
mbedAustin 11:c9c0c4586c5f 27 // Optional: add callback for disconnection
mbedAustin 13:827dd2b32bb8 28 // ble.onDisconnection(disconnectionCallback);
mbedAustin 1:0692bee84264 29
mbedAustin 1:0692bee84264 30 // Sacrifice 3B of 31B to Advertising Flags
mbedAustin 1:0692bee84264 31 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE );
mbedAustin 4:d602b1c3aef4 32 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
mbedAustin 1:0692bee84264 33
mbedAustin 1:0692bee84264 34 // Sacrifice 2B of 31B to AdvType overhead, rest goes to AdvData array you define
mbedAustin 1:0692bee84264 35 ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
mbedAustin 13:827dd2b32bb8 36
mbedAustin 13:827dd2b32bb8 37 // Optional: Add name to device
mbedAustin 5:fff16d283dcf 38 //ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
mbedAustin 1:0692bee84264 39
mbedAustin 1:0692bee84264 40 // Set advertising interval. Longer interval = longer battery life
mbedAustin 12:06c984252bd1 41 ble.setAdvertisingInterval(100); // 100ms, set as percentage of a second
mbedAustin 1:0692bee84264 42 ble.startAdvertising();
mbedAustin 1:0692bee84264 43
mbedAustin 1:0692bee84264 44 // Infinite loop waiting for BLE events
mbedAustin 1:0692bee84264 45 for (;;) {
mbedAustin 8:5442739198ec 46 ble.waitForEvent(); // this saves battery while waiting for callback events
mbedAustin 1:0692bee84264 47 }
mbedAustin 1:0692bee84264 48 }