143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
// The MIT License (MIT)
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//
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// Copyright (c) 2015 Adafruit Industries
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#ifndef _ADAFRUIT_MQTT_FONA_H_
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#define _ADAFRUIT_MQTT_FONA_H_
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#include <Adafruit_FONA.h>
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#include "Adafruit_MQTT.h"
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#define MQTT_FONA_INTERAVAILDELAY 100
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#define MQTT_FONA_QUERYDELAY 500
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// FONA-specific version of the Adafruit_MQTT class.
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// Note that this is defined as a header-only class to prevent issues with using
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// the library on non-FONA platforms (since Arduino will include all .cpp files
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// in the compilation of the library).
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class Adafruit_MQTT_FONA : public Adafruit_MQTT {
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public:
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Adafruit_MQTT_FONA(Adafruit_FONA *f, const char *server, uint16_t port,
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const char *cid, const char *user, const char *pass):
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Adafruit_MQTT(server, port, cid, user, pass),
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fona(f)
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{}
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Adafruit_MQTT_FONA(Adafruit_FONA *f, const char *server, uint16_t port,
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const char *user="", const char *pass=""):
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Adafruit_MQTT(server, port, user, pass),
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fona(f)
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{}
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bool connectServer() {
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char server[40];
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strncpy(server, servername, 40);
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#ifdef ADAFRUIT_SLEEPYDOG_H
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Watchdog.reset();
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#endif
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// connect to server
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DEBUG_PRINTLN(F("Connecting to TCP"));
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return fona->TCPconnect(server, portnum);
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}
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bool disconnectServer() {
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return fona->TCPclose();
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}
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bool connected() {
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// Return true if connected, false if not connected.
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return fona->TCPconnected();
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}
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uint16_t readPacket(uint8_t *buffer, uint16_t maxlen, int16_t timeout) {
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uint8_t *buffp = buffer;
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DEBUG_PRINTLN(F("Reading data.."));
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if (!fona->TCPconnected()) return 0;
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/* Read data until either the connection is closed, or the idle timeout is reached. */
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uint16_t len = 0;
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int16_t t = timeout;
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uint16_t avail;
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while (fona->TCPconnected() && (timeout >= 0)) {
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//DEBUG_PRINT('.');
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while (avail = fona->TCPavailable()) {
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//DEBUG_PRINT('!');
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if (len + avail > maxlen) {
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avail = maxlen - len;
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if (avail == 0) return len;
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}
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// try to read the data into the end of the pointer
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if (! fona->TCPread(buffp, avail)) return len;
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// read it! advance pointer
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buffp += avail;
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len += avail;
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timeout = t; // reset the timeout
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//DEBUG_PRINTLN((uint8_t)c, HEX);
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if (len == maxlen) { // we read all we want, bail
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DEBUG_PRINT(F("Read:\t"));
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DEBUG_PRINTBUFFER(buffer, len);
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return len;
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}
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}
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#ifdef ADAFRUIT_SLEEPYDOG_H
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Watchdog.reset();
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#endif
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timeout -= MQTT_FONA_INTERAVAILDELAY;
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timeout -= MQTT_FONA_QUERYDELAY; // this is how long it takes to query the FONA for avail()
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delay(MQTT_FONA_INTERAVAILDELAY);
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}
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return len;
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}
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bool sendPacket(uint8_t *buffer, uint16_t len) {
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DEBUG_PRINTLN(F("Writing packet"));
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if (fona->TCPconnected()) {
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boolean ret = fona->TCPsend((char *)buffer, len);
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//DEBUG_PRINT(F("sendPacket returned: ")); DEBUG_PRINTLN(ret);
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if (!ret) {
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DEBUG_PRINTLN("Failed to send packet.");
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return false;
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}
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} else {
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DEBUG_PRINTLN(F("Connection failed!"));
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return false;
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}
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return true;
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}
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private:
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uint32_t serverip;
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Adafruit_FONA *fona;
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};
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#endif
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