uart rx receive data then send data from UARTSERVICE

Dependencies:   BLE_API mbed nRF51822

main.cpp

Committer:
li991001
Date:
2016-11-10
Revision:
0:34ffb40dd1ac

File content as of revision 0:34ffb40dd1ac:

/* 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 "mbed.h"
#include "ble/BLE.h"

#include "ble/services/UARTService.h"
#include "Serial.h"

#define NEED_CONSOLE_OUTPUT 1 /* Set this if you need debug messages on the console;
                               * it will have an impact on code-size and power consumption. */

#if NEED_CONSOLE_OUTPUT
#define DEBUG(...) { printf(__VA_ARGS__); }
#else
#define DEBUG(...) /* nothing */
#endif /* #if NEED_CONSOLE_OUTPUT */

BLEDevice  ble;
DigitalOut led1(LED1);

Serial uart1(USBTX,USBRX);

UARTService *uartServicePtr;

uint8_t sFlag = 0;

void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
{
    DEBUG("Disconnected!\n\r");
    DEBUG("Restarting the advertising process\n\r");
    ble.startAdvertising();
}

void connectionCallback(const Gap::ConnectionCallbackParams_t *params) {
   
    DEBUG("Connected!\n\r");
    
}


uint8_t b[40]={'a','d','q','w'};
void onDataWritten1(const GattWriteCallbackParams *params)
{
    
    
    if ((uartServicePtr != NULL) && (params->handle == uartServicePtr->getTXCharacteristicHandle())) {
        uint16_t bytesRead = params->len;
        DEBUG("received %u bytes %s\n\r", bytesRead,params->data);
       // if(sFlag == 1)
       //     ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), (const uint8_t*)b/*params->data*/, 4/*bytesRead*/);
    }
}


void periodicCallback(void)
{
    led1 = !led1;
    
}
uint8_t c;
void uartRx(void)
{
    
    c = uart1.getc();
 
    if(sFlag < 39)
        b[sFlag++] = c;    
        
    if(c == '\r' || c == '\n' || sFlag == 15)
    {
        ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), (const uint8_t*)b/*params->data*/, sFlag/*bytesRead*/);
        sFlag = 0;
    }
}

int main(void)
{
    led1 = 1;
    uart1.baud(9600);
    Ticker ticker;
    ticker.attach(periodicCallback, 1);
    
    uart1.attach(uartRx,Serial::RxIrq);

    DEBUG("Initialising the nRF51822\n\r");
    ble.init();
    ble.onDisconnection(disconnectionCallback);
    ble.onConnection(connectionCallback);
    ble.onDataWritten(onDataWritten1);

    /* setup advertising */
    ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
    ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
    ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
                                     (const uint8_t *)"BLE UART", sizeof("BLE UART") - 1);
    ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
                                     (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));

    ble.setAdvertisingInterval(1000); /* 1000ms; in multiples of 0.625ms. */
    ble.startAdvertising();

    UARTService uartService(ble);
    uartServicePtr = &uartService;

    while (true) {
        ble.waitForEvent();
    }
}