File content as of revision 0:3bdbabca8a09:

#include "mbed.h"
#include "DA14580.h"

DA14580::DA14580( PinName TX, PinName RX, PinName RESET ) : _ble(TX,RX), _reset(RESET)
{
    init();
}

DA14580::DA14580( RawSerial &ble, PinName RESET ) : _ble(ble), _reset(RESET)
{
    init();
}

DA14580::~DA14580()
{
}

void DA14580::init()
{

    _ble.baud(57600);
    _crc = 0x00;
    _recieve = 0;
    _read = 0;
    _filesize = 0;
    _reset = 0;
    _timeout = 100;
    _status = SUCCESS;
}

int DA14580::load()
{

    _status = SUCCESS;

    _fp = fopen( LOADER_FILE, "rb" );
    if (_fp) {
        _filesize = file_size(_fp);
        while((_timeout--) >0) {
            if( _ble.readable() ) {
                _recieve = _ble.getc();
                if(_recieve == STX) {
                    _ble.putc(SOH);
                    break;
                }
            }
        }
        if(_timeout <= 0) {
            _status = E_TIMEOUT_STX;
        } else {
            _timeout = 100;
            _ble.putc(_filesize & 0xff);
            _ble.putc( (_filesize >> 8) & 0xff);
            while((_timeout--) >0) {
                if( _ble.readable() ) {
                    _recieve = _ble.getc();
                    if(_recieve == ACK) {
                        break;
                    }
                }
            }
            if(_timeout <= 0) {
                _status = E_ACK_NOT_RETURNED;
            } else {
                _timeout = 100;
                for(int i = 0; i < _filesize; i++) {
                    _read = getc(_fp);
                    _ble.putc(_read);
                    _crc = _crc ^ _read;
                    if((i % 16) == 0) {
                    }
                }
                while((_timeout--) >0) {
                    if( _ble.readable() ) {
                        _recieve = _ble.getc();
                        if(_recieve == _crc) {
                            _ble.putc(ACK);
                            break;
                        }
                    }
                }
                if(_timeout <= 0) {
                    _status = E_ACK_NOT_RETURNED;
                }
            }
        }
        fclose(_fp);
#if defined(__MICROLIB) && defined(__ARMCC_VERSION) // with microlib and ARM compiler
#warning "free(_fp)"
        free(_fp);
#endif
    } else {
        _status = E_FILE_NOT_FOUND;
    }
    return _status;


}

int DA14580::file_size( FILE *fp )
{
    int     size;

    fseek( fp, 0, SEEK_END ); // seek to end of file
    size    = ftell( fp );    // get current file pointer
    fseek( fp, 0, SEEK_SET ); // seek back to beginning of file

    return size;
}