File content as of revision 25:91c4e9d34b77:

/* ESP8266Interface Example
 * 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 "ESP8266Interface.h"
#include <string>

ESP8266Interface::ESP8266Interface(PinName tx, PinName rx)
:esp8266(tx,rx)
{
    uuidCounter = 0;
    for(int i = 0; i<numSockets; i++){
        availableID[i] = -1;
    }
}

int32_t ESP8266Interface::init(void) 
{   
    if (!esp8266.startup())
        return -1;
    if (!esp8266.reset())
        return -1;
    if (!esp8266.wifiMode(3))
        return -1;
    if (!esp8266.multipleConnections(true))
        return -1;
    return 0;
    
}

int32_t ESP8266Interface::init(const char *ip, const char *mask, const char *gateway) 
{
    return -1;
}

int32_t ESP8266Interface::connect(uint32_t timeout_ms) 
{
    return -1;
}

int32_t ESP8266Interface::connect(const char *ap, const char *pass_phrase, wifi_security_t security, uint32_t timeout_ms)
{
    esp8266.setTimeout(timeout_ms);
    
    if (!esp8266.dhcp(1,true))
        return -1;
    if (!esp8266.connect(ap,pass_phrase)){
        return -1;
    }
    return 0;    
}

int32_t ESP8266Interface::disconnect(void)
{
    if (!esp8266.disconnect())
        return -1;
    for(int i=0; i<numSockets; i++){
        SocketInterface *socket = sockets[availableID[i]];
        deallocateSocket(socket);
    }
    return 0;
    
}

char *ESP8266Interface::getIPAddress(void)
{
    if(!esp8266.getIPAddress(ip))
        return NULL;
    return ip;
}

char *ESP8266Interface::getGateway(void) const
{
    return 0;
}

char *ESP8266Interface::getNetworkMask(void) const
{
    return 0;
}

char *ESP8266Interface::getMACAddress(void) const
{
    return 0;
}

int32_t ESP8266Interface::isConnected(void) 
{
    return (getIPAddress()==NULL) ? -1 : 0;
}

SocketInterface *ESP8266Interface::allocateSocket(socket_protocol_t socketProtocol) 
{   
    int id = -1;
    //Look through the array of available sockets for an unused ID
    for(int i=0; i<numSockets; i++){
        if (availableID[i] == -1){
            id = i;   
            availableID[i] = uuidCounter;
            break;
        }
    }
    if (id == -1){
        return NULL;//tried  to allocate more than the maximum 5 sockets   
    }
    ESP8266Socket *socket = new ESP8266Socket(uuidCounter++, &esp8266, socketProtocol, (uint8_t)id);
    sockets[socket->getHandle()] = socket;
    return socket;
}

int ESP8266Interface::deallocateSocket(SocketInterface *socket) 
{
    int id = (int)static_cast<ESP8266Socket*>(socket)->getID();
    availableID[id] = -1;
    
    std::map<uint32_t, SocketInterface*>::iterator it;
 
    // Check if socket is owned by WiFiRadioInterface
    it = sockets.find(socket->getHandle());
    
    if (it != sockets.end()) {
        // If so, erase it from the internal socket map and deallocate the socket
        sockets.erase(it);
        delete socket;
        return 0;
    } else {
        // Socket is not owned by WiFiRadioInterface, so return -1 error
        return -1;
    }
}
void ESP8266Interface::getHostByName(const char *name, char* hostIP)
{
    SocketInterface* sock = this->allocateSocket(SOCK_UDP);
    IPADDRESS_t ip;
    DnsQuery dns(sock);
    dns.gethostbyname(name, ip);
    sock->close();
    this->deallocateSocket(sock);
    char* resolved = ip.string_format();
    memcpy(hostIP, resolved, strlen(resolved)+1);
    printf("IP:%s\n",resolved);
}   

ESP8266Socket::ESP8266Socket(uint32_t handle, ESP8266 *driver, socket_protocol_t type, uint8_t id)
: driver(driver), _id(id)
{
    _handle = handle;
    SocketInterface::_type = type;
}

const char *ESP8266Socket::getHostByName(const char *name) const
{
    return 0;
}

void ESP8266Socket::setAddress(const char* addr)
{
    _addr = (char*)addr;
}

void ESP8266Socket::setPort(uint16_t port) 
{
     _port = port;
}

void ESP8266Socket::setAddressPort(const char* addr, uint16_t port)
{
    _addr = (char*)addr;
    _port = port;
}

const char *ESP8266Socket::getAddress(void) const
{
    return (const char*)_addr;
}

uint16_t ESP8266Socket::getPort(void) const
{
    return _port;
}


int32_t ESP8266Socket::bind(uint16_t port) const
{
    return -1;
}

int32_t ESP8266Socket::listen(void) const
{
    return -1;
}

int32_t ESP8266Socket::accept() const
{
    return -1;
}

int32_t ESP8266Socket::open() 
{
    string sock_type;
    if(_type == SOCK_UDP)
        sock_type = "UDP";
    else if(_type == SOCK_TCP)
        sock_type = "TCP";
        
    if (!driver->openSocket(sock_type, _id, _port, _addr)){
        return -1;//opening socket not successful
    }
    return 0;
        
}

int32_t ESP8266Socket::send(const void *data, uint32_t amount, uint32_t timeout_ms) 
{
    
    driver->setTimeout((int)timeout_ms);
    if(!driver->sendData(_id, data, amount)){ 
        return -1;
    }
    return 0;
}

uint32_t ESP8266Socket::recv(void *data, uint32_t amount, uint32_t timeout_ms)
{
    
    return driver->recv(data, amount);
        
}

int32_t ESP8266Socket::close() const
{
    
    if (!driver->close(_id)){
        return -1;//closing socket not successful
    }
    return 0;
}

uint32_t ESP8266Socket::getHandle()const
{
    return _handle;
}

uint8_t ESP8266Socket::getID()
{
    return _id;   
}