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@15:7e06fce6e4f8, 2016-01-12 (annotated)

Committer:
andresag
Date:
Tue Jan 12 12:00:16 2016 +0000
Revision:
15:7e06fce6e4f8
Parent:
14:1c15d473b42f
Child:
16:a84185b72bae
Add missing license information to source code.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andresag 15:7e06fce6e4f8 1 /* mbed Microcontroller Library
andresag 15:7e06fce6e4f8 2 * Copyright (c) 2006-2015 ARM Limited
andresag 15:7e06fce6e4f8 3 *
andresag 15:7e06fce6e4f8 4 * Licensed under the Apache License, Version 2.0 (the "License");
andresag 15:7e06fce6e4f8 5 * you may not use this file except in compliance with the License.
andresag 15:7e06fce6e4f8 6 * You may obtain a copy of the License at
andresag 15:7e06fce6e4f8 7 *
andresag 15:7e06fce6e4f8 8 * http://www.apache.org/licenses/LICENSE-2.0
andresag 15:7e06fce6e4f8 9 *
andresag 15:7e06fce6e4f8 10 * Unless required by applicable law or agreed to in writing, software
andresag 15:7e06fce6e4f8 11 * distributed under the License is distributed on an "AS IS" BASIS,
andresag 15:7e06fce6e4f8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
andresag 15:7e06fce6e4f8 13 * See the License for the specific language governing permissions and
andresag 15:7e06fce6e4f8 14 * limitations under the License.
andresag 15:7e06fce6e4f8 15 */
andresag 15:7e06fce6e4f8 16
mbedAustin 0:5375be4301ed 17 #include "mbed.h"
andresag 14:1c15d473b42f 18 #include "ble/BLE.h"
andresag 14:1c15d473b42f 19
andresag 14:1c15d473b42f 20 /* Optional: Device Name, add for human read-ability */
andresag 14:1c15d473b42f 21 const static char DEVICE_NAME[] = "ChangeMe!!";
andresag 14:1c15d473b42f 22
andresag 14:1c15d473b42f 23 /* You have up to 26 bytes of advertising data to use. */
andresag 14:1c15d473b42f 24 const static uint8_t AdvData[] = {0x01,0x02,0x03,0x04,0x05}; /* Example of hex data */
andresag 14:1c15d473b42f 25 //const static uint8_t AdvData[] = {"ChangeThisData"}; /* Example of character data */
mbedAustin 0:5375be4301ed 26
andresag 14:1c15d473b42f 27 /* Optional: Restart advertising when peer disconnects */
andresag 14:1c15d473b42f 28 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
andresag 14:1c15d473b42f 29 {
andresag 14:1c15d473b42f 30 BLE::Instance().gap().startAdvertising();
andresag 14:1c15d473b42f 31 }
andresag 14:1c15d473b42f 32 /**
andresag 14:1c15d473b42f 33 * This function is called when the ble initialization process has failed
andresag 14:1c15d473b42f 34 */
andresag 14:1c15d473b42f 35 void onBleInitError(BLE &ble, ble_error_t error)
andresag 14:1c15d473b42f 36 {
andresag 14:1c15d473b42f 37 /* Avoid compiler warnings */
andresag 14:1c15d473b42f 38 (void) ble;
andresag 14:1c15d473b42f 39 (void) error;
andresag 14:1c15d473b42f 40
andresag 14:1c15d473b42f 41 /* Initialization error handling should go here */
andresag 14:1c15d473b42f 42 }
mbedAustin 0:5375be4301ed 43
andresag 14:1c15d473b42f 44 /**
andresag 14:1c15d473b42f 45 * Callback triggered when the ble initialization process has finished
andresag 14:1c15d473b42f 46 */
andresag 14:1c15d473b42f 47 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
andresag 14:1c15d473b42f 48 {
andresag 14:1c15d473b42f 49 BLE& ble = params->ble;
andresag 14:1c15d473b42f 50 ble_error_t error = params->error;
andresag 14:1c15d473b42f 51
andresag 14:1c15d473b42f 52 if (error != BLE_ERROR_NONE) {
andresag 14:1c15d473b42f 53 /* In case of error, forward the error handling to onBleInitError */
andresag 14:1c15d473b42f 54 onBleInitError(ble, error);
andresag 14:1c15d473b42f 55 return;
andresag 14:1c15d473b42f 56 }
mbedAustin 5:fff16d283dcf 57
andresag 14:1c15d473b42f 58 /* Ensure that it is the default instance of BLE */
andresag 14:1c15d473b42f 59 if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
andresag 14:1c15d473b42f 60 return;
andresag 14:1c15d473b42f 61 }
andresag 14:1c15d473b42f 62
andresag 14:1c15d473b42f 63 /* Set device name characteristic data */
andresag 14:1c15d473b42f 64 ble.gap().setDeviceName((const uint8_t *) DEVICE_NAME);
andresag 14:1c15d473b42f 65
andresag 14:1c15d473b42f 66 /* Optional: add callback for disconnection */
andresag 14:1c15d473b42f 67 ble.gap().onDisconnection(disconnectionCallback);
mbedAustin 1:0692bee84264 68
andresag 14:1c15d473b42f 69 /* Sacrifice 3B of 31B to Advertising Flags */
andresag 14:1c15d473b42f 70 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE );
andresag 14:1c15d473b42f 71 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
andresag 14:1c15d473b42f 72
andresag 14:1c15d473b42f 73 /* Sacrifice 2B of 31B to AdvType overhead, rest goes to AdvData array you define */
andresag 14:1c15d473b42f 74 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
andresag 14:1c15d473b42f 75
andresag 14:1c15d473b42f 76 /* Optional: Add name to device */
andresag 14:1c15d473b42f 77 //ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
andresag 14:1c15d473b42f 78
andresag 14:1c15d473b42f 79 /* Set advertising interval. Longer interval == longer battery life */
andresag 14:1c15d473b42f 80 ble.gap().setAdvertisingInterval(100); /* 100ms */
andresag 14:1c15d473b42f 81
andresag 14:1c15d473b42f 82 /* Start advertising */
andresag 14:1c15d473b42f 83 ble.gap().startAdvertising();
mbedAustin 8:5442739198ec 84 }
mbedAustin 8:5442739198ec 85
mbedAustin 1:0692bee84264 86 int main(void)
mbedAustin 0:5375be4301ed 87 {
andresag 14:1c15d473b42f 88 BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
andresag 14:1c15d473b42f 89
andresag 14:1c15d473b42f 90 /* Initialize BLE baselayer, always do this first! */
andresag 14:1c15d473b42f 91 ble.init(bleInitComplete);
mbedAustin 1:0692bee84264 92
andresag 14:1c15d473b42f 93 /* Infinite loop waiting for BLE events */
andresag 14:1c15d473b42f 94 while (true) {
andresag 14:1c15d473b42f 95 /* Save power while waiting for callback events */
andresag 14:1c15d473b42f 96 ble.waitForEvent();
mbedAustin 1:0692bee84264 97 }
mbedAustin 1:0692bee84264 98 }