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Diff: ESP8266.cpp
- Revision:
- 0:eb6507dc4669
- Child:
- 1:af8bf1171171
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ESP8266.cpp Wed Jun 27 06:50:30 2018 +0000 @@ -0,0 +1,138 @@ +/* ESP8266 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 "ESP8266.h" + +ESP8266::ESP8266(PinName tx, PinName rx, bool debug) + : _serial(tx, rx, 1024), _parser(_serial) { + _serial.baud(115200); + _parser.debugOn(debug); +} + +bool ESP8266::startup(int mode) { + if(mode < 1 || mode > 3) { + return false; + } + + return reset() + && _parser.send("AT+CWMODE_CUR=%d", mode) + && _parser.recv("OK") + && _parser.send("AT+CIPMUX=1") + && _parser.recv("OK") + && _parser.send("AT+CIPDINFO=1") + && _parser.recv("OK"); +} + +bool ESP8266::reset(void) { + for (int i = 0; i < 2; i++) { + if (_parser.send("AT+RST") + && _parser.recv("OK\r\nready")) { + return true; + } + } + + return false; +} + +bool ESP8266::connect(const char *ap, const char *passPhrase) { + return _parser.send("AT+CWJAP_CUR=\"%s\",\"%s\"", ap, passPhrase) + && _parser.recv("OK"); +} + +bool ESP8266::disconnect(void) { + return _parser.send("AT+CWQAP") && _parser.recv("OK"); +} + +char* ESP8266::getIPAddress(void) { + if (!(_parser.send("AT+CIFSR") + && _parser.recv("+CIFSR:STAIP,\"%[^\"]\"", _ip_buffer) + && _parser.recv("OK"))) { + return 0; + } + + return _ip_buffer; +} + +const char* ESP8266::getMACAddress(void) { + if (!(_parser.send("AT+CIFSR") + && _parser.recv("+CIFSR:STAMAC,\"%[^\"]\"", _mac_buffer) + && _parser.recv("OK"))) { + return 0; + } + + return _mac_buffer; +} + +bool ESP8266::isConnected(void) { + return getIPAddress() != 0; +} + +bool ESP8266::open(int linkId, int localPort) { + return _parser.send("AT+CIPSTART=%d,\"%s\",\"%s\",%d,%d,%d", linkId, "UDP","192.168.0.0",49000, localPort, 2) + && _parser.recv("OK"); +} + +bool ESP8266::send(const void* data, uint32_t linkId, uint32_t amount, const char* addr, int port) { + //May take a second try if device is busy + for (unsigned i = 0; i < 2; i++) { + if (_parser.send("AT+CIPSEND=%d,%d,\"%s\",%d", linkId, amount, addr, port) + && _parser.recv(">") + && (_parser.write((char*)data, (int)amount) >= 0) + && _parser.recv("SEND OK")) { + return true; + } + } + + return false; +} + +int32_t ESP8266::recv(void *data, uint32_t amount, char* IP, int* port) { + uint32_t linkId; + uint32_t recv_amount; + + if (!(_parser.recv("+IPD,%d,%d,%[^\,],%d:", &linkId, &recv_amount, IP, port) + && recv_amount <= amount + && _parser.read((char*)data, recv_amount))) { + return -1; + } + + return recv_amount; +} + +bool ESP8266::close(int id) { + //May take a second try if device is busy + for (unsigned i = 0; i < 2; i++) { + if (_parser.send("AT+CIPCLOSE=%d", id) + && _parser.recv("OK")) { + return true; + } + } + + return false; +} + +void ESP8266::setTimeout(uint32_t timeout_ms) { + _parser.setTimeout(timeout_ms); +} + +bool ESP8266::readable() { + return _serial.readable(); +} + +bool ESP8266::writeable() { + return _serial.writeable(); +} +