File content as of revision 11:d3aa5fca2330:

/*
 * TA test
 *
 *  TODO maybe have a mode where the serial port I/O can be swapped,
 *   such that what the nRF generates is sent out the serial port,
 *   and what comes in the serial port goes into the nRF.
 *   Maybe could use the now-unused CTS pin for that.
 */

/* 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 "BLEDevice.h"

#include "DFUService.h"
#include "UARTService.h"
#include "DeviceInformationService.h"

#include "MTSSerialFlowControl.h"
#include "PhoneAppIO.h"

#define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console;
                               * it will have an impact on code-size and power consumption. */

#define LOOPBACK_MODE       0  // Loopback mode

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

BLEDevice  ble;

extern "C"
{
//    serial_t _my_serial;
    void pin_mode( PinName, PinMode );
}

// Note:  From the datasheet:
//  PSELRXD, PSELRTS, PSELTRTS and PSELTXD must only be configured when the UART is disabled.
// But a version of serial_init() erroneously enabled the uart before the setting of those,
//  which messed up flow control.  Apparently the setting is ONCE per ON mode.  ARGH!
//  So we made our own versions of Serial and SerialBase (MySerial and MySerialBase)
//  to not use serial_init() in serial_api.c, so flow control is setup correctly *
//  MTSSerial now uses our MySerial instead of Serial, and now uses hw flow control by default *
//  * We can't change the uart interrupt vector, so we comment-out the handler in
//    serial_api.c, and rebuild the mbed lib for low-level hw flow control to work.
// MTSSerialFlowControl uses "manual" (non-hardware-low-level) flow control based on its
//  internal buffer--Rx servicing usually is fast enough not to need hw flow control, so it's okay.
//
// mts::MTSSerialFlowControl pcfc( USBTX, USBRX, RTS_PIN_NUMBER, CTS_PIN_NUMBER, 384, 2688 );
mts::MTSSerial pcfc( USBTX, USBRX, 256, 1280, RTS_PIN_NUMBER, NC );  // 256, 2560

uint8_t txPayload[TXRX_BUF_LEN] = { 0 };


DigitalOut led1( LED1 );
// DigitalOut rts( RTS_PIN_NUMBER );


char deviceName[6];  // "TAF00";
Gap::address_t   macAddr;
Gap::addr_type_t *pAdType;


const uint8_t DevInfoServiceUUID_rev[] =
{ 
    (uint8_t)(GattService::UUID_DEVICE_INFORMATION_SERVICE & 0xFF), (uint8_t)(GattService::UUID_DEVICE_INFORMATION_SERVICE >> 8)
};

UARTService *uartServicePtr;
PhoneAppIO  *phoneP;

bool connected = false;

void connectionCallback( Gap::Handle_t, Gap::addr_type_t peerAddrType,
                         const Gap::address_t peerAddr, const Gap::ConnectionParams_t *connParams )
{
    connected = true;

    DEBUG( "Connected!\n\r" );
}

void disconnectionCallback( Gap::Handle_t handle, Gap::DisconnectionReason_t reason )
{
    connected = false;

    DEBUG( "Disconnected!\n\r" );
    DEBUG( "Restarting the advertising process\n\r" );
    ble.startAdvertising();
}

bool updateCharacteristic( GattAttribute::Handle_t handle, const uint8_t *data, uint16_t bytesRead )
{
    ble_error_t err = ble.updateCharacteristicValue( handle, data, bytesRead );

    if( (err == BLE_ERROR_BUFFER_OVERFLOW) ||
        (err == BLE_ERROR_PARAM_OUT_OF_RANGE ) )
    {
        pcfc.printf( "\r\nBLE %d!  ", err );

    } else if ( err == BLE_STACK_BUSY )
      {
          // Common error when pumping data.
      }

    return  (err != BLE_ERROR_NONE);
}

void onDataWritten( const GattCharacteristicWriteCBParams *params )
{
    if( phoneP != NULL )
    {
        uint16_t bytesRead = phoneP->maybeHandleRead( params );  // Also writes to txPayload
        if( 0 != bytesRead )
        {
            DEBUG( "received %u bytes\n\r", bytesRead );

            // Also write to serial port...
//            pcfc.printf( "From app: " );
            pcfc.write( (char *)txPayload, bytesRead );
//            pcfc.printf( "\r\n" );

            return;
        }
    }

    // Other Characteristics here.
}

void onDataSent( unsigned count )
{
}

void periodicCallback( void )
{
    led1 = !led1;
//    rts  = !rts;
}

void toPhoneChk( void )
{
//    if( 0 != rts.read() )  pcfc.puts( "\r\n!RTS disengaged.\r\n" );  // When not using HWFC.

    if( phoneP != NULL )
    {
        char ch;
        // Get any data from serial port buffer--Full lines if avail--Last line after >= 20 chars.
        for( int cnt=1; 0 != pcfc.atomicRead( ch ); cnt++ )
        {
            if( 0 > phoneP->putchar( ch ) )
            {
                pcfc.printf( " * " );
                break;
            }
            if( (cnt >= 20) && ('\n' == ch) )  break;
        }
        // Write to outgoing characteristic if anything is pending.
        if( 0 != phoneP->maybeHandleWrite() )
        {
            // pcfc.printf( "ToPhoneHandler \r\n" );
        }
    }
}

int main( void )
{
    led1 = 1;
    Ticker ticker;
    ticker.attach( periodicCallback, 1 );


    pcfc.baud( 57600 );

    DEBUG( "Initialising the nRF51822\n\r" );


    ble.init();
    ble.onConnection( connectionCallback );
    ble.onDisconnection( disconnectionCallback );
    ble.onDataWritten( onDataWritten );
    ble.onDataSent( onDataSent );

    /* setup advertising */
    ble.accumulateAdvertisingPayload( GapAdvertisingData::BREDR_NOT_SUPPORTED );
    ble.setAdvertisingType( GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED );

    // Get MAC addr so we can create a device name using it.
    ble.getAddress( pAdType, macAddr );
    sprintf( deviceName, "T%02X%02X", macAddr[1], macAddr[0] );

    pcfc.printf( "\r\nNano nano!   I am \"%s\"\r\n", deviceName );
#if LOOPBACK_MODE
    pcfc.printf( "\r\nIn BLE Loopback mode.\r\n" );
#endif

    ble.accumulateAdvertisingPayload( GapAdvertisingData::COMPLETE_LOCAL_NAME,
                                      (const uint8_t *)deviceName, strlen(deviceName) );
    ble.accumulateAdvertisingPayload( GapAdvertisingData::INCOMPLETE_LIST_128BIT_SERVICE_IDS,
                                      (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed) );

    ble.accumulateScanResponse( GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS,
                                      (const uint8_t *)DevInfoServiceUUID_rev, sizeof(DevInfoServiceUUID_rev) );

    ble.setAdvertisingInterval( Gap::MSEC_TO_ADVERTISEMENT_DURATION_UNITS( 200 ) );
    ble.startAdvertising();

    DeviceInformationService deviceInfo( ble, "TRX", "TrueAgility", "SN0001", "hw-rev1", "fw-rev1" );

    /* Enable over-the-air firmware updates. Instantiating DFUSservice introduces a
     * control characteristic which can be used to trigger the application to
     * handover control to a resident bootloader. */
    DFUService dfu( ble );

    UARTService uartService( ble );
    uartServicePtr = &uartService;

    PhoneAppIO phone( ble, uartService.getRXCharacteristicHandle(),
                           uartService.getTXCharacteristicHandle() );
    phone.loopbackMode = LOOPBACK_MODE;
    phoneP = ☎

    Timer tmr;
    tmr.start();

    // Main Loop
    for( uint32_t loop=1; ;loop++ )
    {
        ble.waitForEvent();

        toPhoneChk();  // Write any pending data to phone.

        while( 0 <= phone.getchar() );  // Eat input.

//        if( !(loop % 50) )  phone.printf( "Post: %d\r\n", tmr.read_ms() );
    }
}

/* EOF */