MQTT / MQTT

An API for using MQTT over multiple transports

Dependencies:   FP MQTTPacket

Dependents:   Cellular_HelloMQTT IoTStarterKit GSwifiInterface_HelloMQTT IBMIoTClientEthernetExample ... more

This library is part of the EclipseTM Paho project; specifically the embedded client.

The goals of this API are:

  1. to be independent of any system library: hence templates parameters for networking, timer and threading classes
  2. not to rely on heap storage, only automatic (I think this is a good thing)
  3. to limit memory use, for instance by defining the size of the buffers and arrays used at object creation time

MQTTmbed.h@43:21da1f744243, 2014-09-29 (annotated)

Committer:
icraggs
Date:
Mon Sep 29 11:34:26 2014 +0000
Revision:
43:21da1f744243
Parent:
MQTT_mbed.h@29:833386b16f3e
Child:
47:f313853d22a6
Child:
51:5042d7e56f7e
QoS 2 processing

Who changed what in which revision?

UserRevisionLine numberNew contents of line
icraggs 29:833386b16f3e 1 #if !defined(MQTT_MBED_H)
icraggs 29:833386b16f3e 2 #define MQTT_MBED_H
icraggs 29:833386b16f3e 3
icraggs 29:833386b16f3e 4 #include "mbed.h"
icraggs 29:833386b16f3e 5
icraggs 29:833386b16f3e 6 class Countdown
icraggs 29:833386b16f3e 7 {
icraggs 29:833386b16f3e 8 public:
icraggs 29:833386b16f3e 9 Countdown()
icraggs 29:833386b16f3e 10 {
icraggs 29:833386b16f3e 11 t = Timer();
icraggs 29:833386b16f3e 12 }
icraggs 29:833386b16f3e 13
icraggs 29:833386b16f3e 14 Countdown(int ms)
icraggs 29:833386b16f3e 15 {
icraggs 29:833386b16f3e 16 t = Timer();
icraggs 29:833386b16f3e 17 countdown_ms(ms);
icraggs 29:833386b16f3e 18 }
icraggs 29:833386b16f3e 19
icraggs 29:833386b16f3e 20
icraggs 29:833386b16f3e 21 bool expired()
icraggs 29:833386b16f3e 22 {
icraggs 29:833386b16f3e 23 return t.read_ms() >= interval_end_ms;
icraggs 29:833386b16f3e 24 }
icraggs 29:833386b16f3e 25
icraggs 43:21da1f744243 26 void countdown_ms(unsigned long ms)
icraggs 29:833386b16f3e 27 {
icraggs 29:833386b16f3e 28 t.stop();
icraggs 29:833386b16f3e 29 interval_end_ms = ms;
icraggs 29:833386b16f3e 30 t.reset();
icraggs 29:833386b16f3e 31 t.start();
icraggs 29:833386b16f3e 32 }
icraggs 29:833386b16f3e 33
icraggs 29:833386b16f3e 34 void countdown(int seconds)
icraggs 29:833386b16f3e 35 {
icraggs 43:21da1f744243 36 countdown_ms((unsigned long)seconds * 1000L);
icraggs 29:833386b16f3e 37 }
icraggs 29:833386b16f3e 38
icraggs 29:833386b16f3e 39 int left_ms()
icraggs 29:833386b16f3e 40 {
icraggs 29:833386b16f3e 41 return interval_end_ms - t.read_ms();
icraggs 29:833386b16f3e 42 }
icraggs 29:833386b16f3e 43
icraggs 29:833386b16f3e 44 private:
icraggs 29:833386b16f3e 45 Timer t;
icraggs 43:21da1f744243 46 unsigned long interval_end_ms;
icraggs 29:833386b16f3e 47 };
icraggs 29:833386b16f3e 48
icraggs 29:833386b16f3e 49 #endif