cc
SpwfInterface.cpp
- Committer:
- mridup
- Date:
- 2016-09-21
- Revision:
- 9:4cd89586b370
- Parent:
- 5:8ee8698d19e3
- Child:
- 13:0368732b5b9d
File content as of revision 9:4cd89586b370:
/* mbed Microcontroller Library * Copyright (c) 20015 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. */ /** ****************************************************************************** * @file SpwfInterface.cpp * @author STMicroelectronics * @brief Implementation of the NetworkStack for the SPWF Device ****************************************************************************** * @copy * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. * * <h2><center>© COPYRIGHT 2016 STMicroelectronics</center></h2> ****************************************************************************** */ #include "SpwfInterface.h" // Various timeouts for different SPWF operations #define SPWF_CONNECT_TIMEOUT 20000 #define SPWF_SEND_TIMEOUT 500 #define SPWF_RECV_TIMEOUT 500 #define SPWF_MISC_TIMEOUT 15000 /** spwf_socket class * Implementation of SPWF socket structure */ struct spwf_socket { int id; int server_port; nsapi_protocol_t proto; bool connected; }; /** * @brief SpwfSAInterface constructor * @param tx: Pin USART TX * rx: Pin USART RX * rst: reset pin for Spwf module * wkup: reset pin for Spwf module * rts: Pin USART RTS * debug : not used * @retval none */ SpwfSAInterface::SpwfSAInterface(PinName tx, PinName rx, bool debug) : _spwf(tx, rx, debug) { memset(_ids, 0, sizeof(_ids)); isInitialized = false; isListening = false; } /** * @brief SpwfSAInterface destructor * @param none * @retval none */ SpwfSAInterface::~SpwfSAInterface() { } /** * @brief init function initializes SPWF FW and module * @param none * @retval error value */ int SpwfSAInterface::init(void) { _spwf.setTimeout(SPWF_MISC_TIMEOUT); if(_spwf.startup(0)) { isInitialized=true; return true; } else return NSAPI_ERROR_DEVICE_ERROR; } /** * @brief network connect connects to Access Point * @param ap: Access Point (AP) Name String * pass_phrase: Password String for AP * security: type of NSAPI security supported * @retval NSAPI Error Type */ int SpwfSAInterface::connect(const char *ap, const char *pass_phrase, nsapi_security_t security) { int mode; //initialize the device before connecting if(!isInitialized) { if(!init()) return NSAPI_ERROR_DEVICE_ERROR; } _spwf.setTimeout(SPWF_CONNECT_TIMEOUT); switch(security) { case NSAPI_SECURITY_NONE: mode = 0; pass_phrase = NULL; break; case NSAPI_SECURITY_WEP: mode = 1; break; case NSAPI_SECURITY_WPA: case NSAPI_SECURITY_WPA2: mode = 2; break; default: mode = 2; break; } return (_spwf.connect((char*)ap, (char*)pass_phrase, mode)); } /** * @brief network disconnect disconnects from Access Point * @param none * @retval NSAPI Error Type */ int SpwfSAInterface::disconnect() { return (_spwf.disconnect()); } /** * @brief Get the local IP address * @param none * @retval Null-terminated representation of the local IP address * or null if not yet connected */ const char *SpwfSAInterface::get_ip_address() { return _spwf.getIPAddress(); } /** * @brief Get the MAC address * @param none * @retval Null-terminated representation of the MAC address * or null if not yet connected */ const char *SpwfSAInterface::get_mac_address() { return _spwf.getMACAddress(); } /** * @brief open a socket handle * @param handle: Pointer to handle * proto: TCP/UDP protocol * @retval NSAPI Error Type */ int SpwfSAInterface::socket_open(void **handle, nsapi_protocol_t proto) { int id = -1; struct spwf_socket *socket = new struct spwf_socket; if (!socket) { return NSAPI_ERROR_NO_SOCKET; } socket->id = id; socket->server_port = id; socket->proto = proto; socket->connected = false; *handle = socket; return 0; } /** * @brief connect to a remote socket * @param handle: Pointer to socket handle * addr: Address to connect to * @retval NSAPI Error Type */ int SpwfSAInterface::socket_connect(void *handle, const SocketAddress &addr) { int sock_id = 99; struct spwf_socket *socket = (struct spwf_socket *)handle; const char *proto = (socket->proto == NSAPI_UDP) ? "u" : "t";//"s" for secure socket? if (!_spwf.open(proto, &sock_id, addr.get_ip_address(), addr.get_port())) {;//sock ID is allocated NOW return NSAPI_ERROR_DEVICE_ERROR; } //TODO: Maintain a socket table to map socket ID to host & port //TODO: lookup on client table to see if already socket is allocated to same host/port //multimap <char *, vector <uint16_t> > ::iterator i = c_table.find((char*)ip); if(sock_id <= SPWFSA_SOCKET_COUNT) { socket->id = sock_id;//the socket ID of this Socket instance _ids[socket->id] = true; socket->connected = true; } else return NSAPI_ERROR_NO_SOCKET; return 0; } /** * @brief bind to a port number and address * @param handle: Pointer to socket handle * proto: address to bind to * @retval NSAPI Error Type */ int SpwfSAInterface::socket_bind(void *handle, const SocketAddress &address) { struct spwf_socket *socket = (struct spwf_socket *)handle; socket->server_port = address.get_port(); return 0; } /** * @brief start listening on a port and address * @param handle: Pointer to handle * backlog: not used (always value is 1) * @retval NSAPI Error Type */ int SpwfSAInterface::socket_listen(void *handle, int backlog) { return NSAPI_ERROR_UNSUPPORTED; } /** * @brief accept connections from remote sockets * @param handle: Pointer to handle of client socket (connecting) * proto: handle of server socket which will accept connections * @retval NSAPI Error Type */ int SpwfSAInterface::socket_accept(void **handle, void *server) { return NSAPI_ERROR_UNSUPPORTED; } /** * @brief close a socket * @param handle: Pointer to handle * @retval NSAPI Error Type */ int SpwfSAInterface::socket_close(void *handle) { struct spwf_socket *socket = (struct spwf_socket *)handle; int err = 0; _spwf.setTimeout(SPWF_MISC_TIMEOUT); if(socket->id!=-1) { if (_spwf.close(socket->id)) { if(socket->id==SERVER_SOCKET_NO) isListening = false; else _ids[socket->id] = false; } else err = NSAPI_ERROR_DEVICE_ERROR; } delete socket; return err; } /** * @brief write to a socket * @param handle: Pointer to handle * data: pointer to data * size: size of data * @retval no of bytes sent */ int SpwfSAInterface::socket_send(void *handle, const void *data, unsigned size) { struct spwf_socket *socket = (struct spwf_socket *)handle; //int err; /*if(socket->id==SERVER_SOCKET_NO) { if(socket->server_port==-1 || !isListening) return NSAPI_ERROR_NO_SOCKET; //server socket not bound or not listening err = _spwf.socket_server_write((uint16_t)size, (char*)data); } else { err = _spwf.send(socket->id, (char*)data, (uint32_t)size); }*/ if (!_spwf.send(socket->id, (char*)data, (uint32_t)size)) { return NSAPI_ERROR_DEVICE_ERROR; } return size; } /** * @brief receive data on a socket * @param handle: Pointer to handle * data: pointer to data * size: size of data * @retval no of bytes read */ int SpwfSAInterface::socket_recv(void *handle, void *data, unsigned size) { struct spwf_socket *socket = (struct spwf_socket *)handle; int32_t recv; _spwf.setTimeout(SPWF_RECV_TIMEOUT); //CHECK:Receive for both Client and Server Sockets same? recv = _spwf.recv(socket->id, (char*)data, (uint32_t)size); if (recv < 0) { //wait_ms(1);//delay of 1ms <for F4>?? //printf("."); if (recv == -1) return NSAPI_ERROR_WOULD_BLOCK;//send this if we want to block call (else timeout will happen) else return NSAPI_ERROR_DEVICE_ERROR; } return recv; } /** * @brief send data to a udp socket * @param handle: Pointer to handle * addr: address of udp socket * data: pointer to data * size: size of data * @retval no of bytes sent */ int SpwfSAInterface::socket_sendto(void *handle, const SocketAddress &addr, const void *data, unsigned size) { struct spwf_socket *socket = (struct spwf_socket *)handle; if (!socket->connected) { int err = socket_connect(socket, addr); if (err < 0) { return err; } } return socket_send(socket, data, size); } /** * @brief receive data on a udp socket * @param handle: Pointer to handle * addr: address of udp socket * data: pointer to data * size: size of data * @retval no of bytes read */ int SpwfSAInterface::socket_recvfrom(void *handle, SocketAddress *addr, void *data, unsigned size) { struct spwf_socket *socket = (struct spwf_socket *)handle; return socket_recv(socket, data, size); } /** * @brief attach function/callback to the socket * Not used * @param handle: Pointer to handle * callback: callback function pointer * data: pointer to data * @retval none */ void SpwfSAInterface::socket_attach(void *handle, void (*callback)(void *), void *data) { //No implementation yet } /** * @brief utility debug function for printing to serial terminal * @param string: Pointer to data * @retval none */ void SpwfSAInterface::debug(const char * string) { //_spwf.debug_print(string); }