Sarah Marsh / Mbed OS mbed-os-example-ble-voice

Fork of mbed-os-example-ble-LED by mbed-os-examples

source/main.cpp

Committer:
sarahmarshy
Date:
2017-06-01
Revision:
25:b08a7d2c30b6
Parent:
24:0770ad9edb2d

File content as of revision 25:b08a7d2c30b6:

/* mbed Microcontroller Library
 * Copyright (c) 2006-2013 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 "UARTService.h"
#include "mbed.h"

DigitalOut alivenessLED(LED1, 0);
DigitalOut actuatedLED(LED2, 0);

DigitalOut light(D2);

const static char     DEVICE_NAME[] = "mbedVoiceUART";
static const uint16_t uuid16_list[] = {UARTServiceShortUUID};

static EventQueue eventQueue(
    /* event count */ 10 * /* event size */ 32
);

UARTService *UARTServicePtr;

void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
{
    (void) params;
    BLE::Instance().gap().startAdvertising();
}

void blinkCallback(void)
{
    alivenessLED = !alivenessLED; /* Do blinky on LED1 to indicate system aliveness. */
}

void check_command(char* cmd){
    if(strstr(cmd, "panic")){
        light = 1;
    }
    else if(strstr(cmd, "chill")){
        light = 0;
    }
    
}

/**
 * This callback allows the UARTService to receive updates to the UART buffer
 *
 * @param[in] params
 *     Information about the characterisitc being updated.
 */
void onDataWrittenCallback(const GattWriteCallbackParams *params) {
    char* rcv = (char*)malloc(UARTServicePtr->BLE_UART_SERVICE_MAX_DATA_LEN);
    int c = UARTServicePtr->_getc();
    int i = 0;
    while (c != EOF){
        rcv[i++] = (char)c;
        c = UARTServicePtr->_getc();     
    }
    rcv[UARTServicePtr->BLE_UART_SERVICE_MAX_DATA_LEN-1] = '\0';
    printf("%s\r\n", rcv);
    check_command(rcv);
    free(rcv);
}

/**
 * This function is called when the ble initialization process has failled
 */
void onBleInitError(BLE &ble, ble_error_t error)
{
    /* Initialization error handling should go here */
}

/**
 * Callback triggered when the ble initialization process has finished
 */
void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
{
    BLE&        ble   = params->ble;
    ble_error_t error = params->error;

    if (error != BLE_ERROR_NONE) {
        /* In case of error, forward the error handling to onBleInitError */
        onBleInitError(ble, error);
        return;
    }

    /* Ensure that it is the default instance of BLE */
    if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
        return;
    }

    ble.gap().onDisconnection(disconnectionCallback);
    ble.gattServer().onDataWritten(onDataWrittenCallback);

    UARTServicePtr = new UARTService(ble);

    /* setup advertising */
    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));
    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
    ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
    ble.gap().setAdvertisingInterval(160); /* 1000ms. */
    ble.gap().startAdvertising();
}

void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
    BLE &ble = BLE::Instance();
    eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
}

int main()
{
    light = 0; 
    eventQueue.call_every(500, blinkCallback);

    BLE &ble = BLE::Instance();
    ble.onEventsToProcess(scheduleBleEventsProcessing);
    ble.init(bleInitComplete);

    eventQueue.dispatch_forever();

    return 0;
}