emw312 driver
Fork of emw3162-driver by
EMW3162Interface.cpp
- Committer:
- sarahmarshy
- Date:
- 2017-01-12
- Revision:
- 4:2ab7d68a654c
- Parent:
- 2:fb6251306b21
File content as of revision 4:2ab7d68a654c:
/* EMW3162 implementation of NetworkInterfaceAPI * 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 "EMW3162Interface.h" // Various timeouts for different EMW3162 operations #define EMW3162_CONNECT_TIMEOUT 15000 #define EMW3162_SEND_TIMEOUT 500 #define EMW3162_RECV_TIMEOUT 0 #define EMW3162_MISC_TIMEOUT 500 // EMW3162Interface implementation EMW3162Interface::EMW3162Interface(PinName tx, PinName rx, bool debug) : _esp(tx, rx, debug) { memset(_ids, 0, sizeof(_ids)); memset(_cbs, 0, sizeof(_cbs)); _esp.attach(this, &EMW3162Interface::event); } int EMW3162Interface::connect() { _esp.setTimeout(EMW3162_CONNECT_TIMEOUT); if (!_esp.startup()) { return NSAPI_ERROR_DEVICE_ERROR; } if (!_esp.dhcp(true)) { return NSAPI_ERROR_DHCP_FAILURE; } if (!_esp.connect(ap_ssid, ap_pass)) { return NSAPI_ERROR_NO_CONNECTION; } if (!_esp.getIPAddress()) { return NSAPI_ERROR_DHCP_FAILURE; } return 0; } int EMW3162Interface::connect(const char *ssid, const char *pass, nsapi_security_t security, uint8_t channel) { if (channel != 0) { return NSAPI_ERROR_UNSUPPORTED; } set_credentials(ssid, pass, security); return connect(); } int EMW3162Interface::set_credentials(const char *ssid, const char *pass, nsapi_security_t security) { memset(ap_ssid, 0, sizeof(ap_ssid)); strncpy(ap_ssid, ssid, sizeof(ap_ssid)); memset(ap_pass, 0, sizeof(ap_pass)); strncpy(ap_pass, pass, sizeof(ap_pass)); ap_sec = security; return 0; } int EMW3162Interface::set_channel(uint8_t channel) { return NSAPI_ERROR_UNSUPPORTED; } int EMW3162Interface::disconnect() { _esp.setTimeout(EMW3162_MISC_TIMEOUT); if (!_esp.disconnect()) { return NSAPI_ERROR_DEVICE_ERROR; } return 0; } const char* EMW3162Interface::get_ip_address() { return _esp.getIPAddress(); } const char* EMW3162Interface::get_mac_address() { return _esp.getMACAddress(); } int EMW3162Interface::scan(WiFiAccessPoint *res, unsigned count){ return NSAPI_ERROR_UNSUPPORTED; } int8_t EMW3162Interface::get_rssi() { return NSAPI_ERROR_UNSUPPORTED; } struct EMW3162_socket { int id; int socketId; nsapi_protocol_t proto; bool connected; }; int EMW3162Interface::socket_open(void **handle, nsapi_protocol_t proto) { // Look for an unused socket int id = -1; for (int i = 1; i < EMW3162_SOCKET_COUNT; i++) { if (!_ids[i]) { id = i; _ids[i] = true; break; } } if (id == -1) { return NSAPI_ERROR_NO_SOCKET; } struct EMW3162_socket *socket = new struct EMW3162_socket; if (!socket) { return NSAPI_ERROR_NO_SOCKET; } socket->id = id; socket->socketId = 0; socket->proto = proto; socket->connected = false; *handle = socket; return 0; } int EMW3162Interface::socket_close(void *handle) { struct EMW3162_socket *socket = (struct EMW3162_socket *)handle; int err = 0; _esp.setTimeout(EMW3162_MISC_TIMEOUT); if (!_esp.close(socket->socketId)) { err = NSAPI_ERROR_DEVICE_ERROR; } _ids[socket->id] = false; delete socket; return err; } int EMW3162Interface::socket_bind(void *handle, const SocketAddress &address) { return NSAPI_ERROR_UNSUPPORTED; } int EMW3162Interface::socket_listen(void *handle, int backlog) { return NSAPI_ERROR_UNSUPPORTED; } int EMW3162Interface::socket_connect(void *handle, const SocketAddress &addr) { struct EMW3162_socket *socket = (struct EMW3162_socket *)handle; _esp.setTimeout(EMW3162_MISC_TIMEOUT); const char *proto = (socket->proto == NSAPI_UDP) ? "UNICAST" : "CLIENT"; socket -> socketId = _esp.open(proto, socket->id, addr.get_ip_address(), addr.get_port()); if (!(socket -> socketId)) { return NSAPI_ERROR_DEVICE_ERROR; } socket->connected = true; return 0; } int EMW3162Interface::socket_accept(void *handle, void **socket, SocketAddress *address) { return NSAPI_ERROR_UNSUPPORTED; } int EMW3162Interface::socket_send(void *handle, const void *data, unsigned size) { struct EMW3162_socket *socket = (struct EMW3162_socket *)handle; _esp.setTimeout(EMW3162_SEND_TIMEOUT); if (!_esp.send(socket->socketId, data, size)) { return NSAPI_ERROR_DEVICE_ERROR; } return size; } int EMW3162Interface::socket_recv(void *handle, void *data, unsigned size) { struct EMW3162_socket *socket = (struct EMW3162_socket *)handle; _esp.setTimeout(EMW3162_RECV_TIMEOUT); int32_t recv = _esp.recv(socket->socketId, data, size); if (recv < 0) { return NSAPI_ERROR_WOULD_BLOCK; } return recv; } int EMW3162Interface::socket_sendto(void *handle, const SocketAddress &addr, const void *data, unsigned size) { struct EMW3162_socket *socket = (struct EMW3162_socket *)handle; if (!socket->connected) { int err = socket_connect(socket, addr); if (err < 0) { return err; } } return socket_send(socket, data, size); } int EMW3162Interface::socket_recvfrom(void *handle, SocketAddress *addr, void *data, unsigned size) { struct EMW3162_socket *socket = (struct EMW3162_socket *)handle; return socket_recv(socket, data, size); } void EMW3162Interface::socket_attach(void *handle, void (*callback)(void *), void *data) { struct EMW3162_socket *socket = (struct EMW3162_socket *)handle; _cbs[socket->id].callback = callback; _cbs[socket->id].data = data; } void EMW3162Interface::event() { for (int i = 0; i < EMW3162_SOCKET_COUNT; i++) { if (_cbs[i].callback) { _cbs[i].callback(_cbs[i].data); } } }