File content as of revision 0:be89b5fdea09:

/* mbed Microcontroller Library
 * Copyright (c) 2015 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "mbed.h"
#include "BLE.h"
#include "KeyboardService.h"
#include "BatteryService.h"
#include "DeviceInformationService.h"

static const char MODEL_NAME[] = "keyboard";
static const char SERIAL_NUMBER[] = "X00000";
static const char HARDWARE_REVISION[] = "0.1";
static const char FIRMWARE_REVISION[] = "0.1";
static const char SOFTWARE_REVISION[] = "0.0";

static const uint8_t DEVICE_NAME[] = "my keyboard";
static const uint8_t SHORT_DEVICE_NAME[] = "kbd1";

InterruptIn button1(D2);


static const uint16_t uuid16_list[] =  {
    GattService::UUID_HUMAN_INTERFACE_DEVICE_SERVICE,
    GattService::UUID_DEVICE_INFORMATION_SERVICE,
    GattService::UUID_BATTERY_SERVICE
};

KeyboardService* keyboardService;
BatteryService* batteryService;
DeviceInformationService* deviceInformationService;

// I2C i2c(D2, D3);
// AnalogIn batteryInput(A4);

static void onDisconnect(const Gap::DisconnectionCallbackParams_t *params) {
    printf("onDisconnect\r\n");
    BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising();
}


static void onConnect(const Gap::ConnectionCallbackParams_t *params) {
    printf("onConnect\r\n");
}


static void passkeyDisplayCallback(Gap::Handle_t handle, const SecurityManager::Passkey_t passkey) {
    printf("Input passKey: ");
    for (unsigned i = 0; i < Gap::ADDR_LEN; i++) {
        printf("%c", passkey[i]);
    }
    printf("\r\n");
}

static void securitySetupCompletedCallback(Gap::Handle_t handle, SecurityManager::SecurityCompletionStatus_t status)
{
    if (status == SecurityManager::SEC_STATUS_SUCCESS) {
        printf("Security success %d\r\n", status);
    } else {
        printf("Security failed %d\r\n", status);
    }
}

static void securitySetupInitiatedCallback(Gap::Handle_t, bool allowBonding, bool requireMITM, SecurityManager::SecurityIOCapabilities_t iocaps)
{
    printf("Security setup initiated\r\n");
}

void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) {
    BLE &ble          = params->ble;
    ble_error_t error = params->error;
    
    if (error != BLE_ERROR_NONE) {
        printf("error on ble.init() \r\n");
        return;
    }
     
    ble.gap().onDisconnection(onDisconnect);
    ble.gap().onConnection(onConnect);


    bool enableBonding = true;
    bool requireMITM = true;
    uint8_t passkey[] = "123456";

    printf("setup ble security manager\r\n");
    ble.securityManager().onSecuritySetupInitiated(securitySetupInitiatedCallback);
    ble.securityManager().onPasskeyDisplay(passkeyDisplayCallback);
    ble.securityManager().onSecuritySetupCompleted(securitySetupCompletedCallback);
    // TODO 
    // ble.securityManager().init(true, true, SecurityManager::IO_CAPS_DISPLAY_ONLY);
    // ble.securityManager().init(enableBonding, requireMITM, SecurityManager::IO_CAPS_KEYBOARD_ONLY, passkey);
    // ble.securityManager().init(enableBonding, requireMITM, SecurityManager::IO_CAPS_NONE);
    ble.securityManager().init(enableBonding, requireMITM, SecurityManager::IO_CAPS_DISPLAY_ONLY, passkey);

    keyboardService = new KeyboardService(ble);
    deviceInformationService = new DeviceInformationService(ble, "lowreal.net", MODEL_NAME, SERIAL_NUMBER, HARDWARE_REVISION, FIRMWARE_REVISION, SOFTWARE_REVISION);
    batteryService = new BatteryService(ble, 10);

    printf("general setup\r\n");
    ble.gap().accumulateAdvertisingPayload(
        GapAdvertisingData::BREDR_NOT_SUPPORTED |
        GapAdvertisingData::LE_GENERAL_DISCOVERABLE
    );
    ble.gap().accumulateAdvertisingPayload(
        GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS,
        (uint8_t*)uuid16_list, sizeof(uuid16_list)
    );

    printf("set advertising\r\n");
    // see 5.1.2: HID over GATT Specification (pg. 25)
    ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
    printf("set advertising interval\r\n");
    ble.gap().setAdvertisingInterval(50);
    // XXX
    ble.gap().setAdvertisingTimeout(0);
    
    printf("set key board\r\n");
    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::KEYBOARD);
    ble.gap().accumulateAdvertisingPayload(
        GapAdvertisingData::COMPLETE_LOCAL_NAME,
        DEVICE_NAME, sizeof(DEVICE_NAME)
    );
    ble.gap().accumulateAdvertisingPayload(
        GapAdvertisingData::SHORTENED_LOCAL_NAME,
        SHORT_DEVICE_NAME, sizeof(SHORT_DEVICE_NAME)
    );

    printf("set device name\r\n");
    ble.gap().setDeviceName(DEVICE_NAME);
    // ble.gap().setTxPower(-12);
    

    printf("advertising\r\n");
    ble.gap().startAdvertising();
}

void send_string(const char * c) {
    if (!keyboardService)
        return;
 
    if (!keyboardService->isConnected()) {
        printf("we haven't connected yet...");
    } else {
        int len = strlen(c);
        keyboardService->printf(c);
        printf("sending %d chars\r\n", len);
    }
}
 
void send_stuff() {
    send_string("hello world!\n");
}

int main(void) {
    
    // https://github.com/jpbrucker/BLE_HID/blob/master/examples/examples_common.cpp

    printf("ble.init\r\n");
    BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
    ble.init(bleInitComplete);

    button1.rise(send_stuff);
    
    // TODO: Use internal 1.2V reference for batteryInput
    while (!ble.hasInitialized()) { }
    
    printf("ble.hasIntialized\r\n");
        
    while(1) {
        ble.waitForEvent(); 
    }
}