publish works (QoS 0)

Adafruit_MQTT.cpp

@@ -67,20 +67,50 @@ uint8_t Adafruit_MQTT::connectPacket(uint8_t *packet) {
   p[1] = 0;
   p+=2;
 
-
   packet[1] = totallen;
   
-
   return totallen+2;
 }
 
+uint8_t Adafruit_MQTT::publishPacket(uint8_t *packet, char *topic, char *data, uint8_t qos) {
+  uint8_t *p = packet;
+  uint16_t len = strlen(topic);
 
-Adafruit_MQTT_Publish::Adafruit_MQTT_Publish(Adafruit_MQTT *mqttserver, char *feed) {
-  mqtt = mqttserver;
-  strncpy(feedname, feed, FEEDNAME_SIZE);
-  feedname[FEEDNAME_SIZE-1] = 0; 
+  p[0] = MQTT_CTRL_PUBLISH << 4 | qos << 1;
+  // fill in packet[1] last
+  p+=2;
+  p[0] = len >> 8;
+  p++;
+  p[0] = len & 0xFF;
+  p++;
+  memcpy(p, topic, len);
+  p+=len;
+  memcpy(p, data, strlen(data));
+  p+=strlen(data);
+  len = p - packet;
+  packet[1] = len-2;
+  return len;
+}
+
+
+Adafruit_MQTT_Publish::Adafruit_MQTT_Publish(Adafruit_MQTT &mqttserver, char *feed, uint8_t q) {
+  mqtt = &mqttserver;
+  strncpy(topic, feed, FEEDNAME_SIZE);
+  topic[FEEDNAME_SIZE-1] = 0; 
+  qos = q;
 
   errno = 0;
 }
 
 
+bool Adafruit_MQTT_Publish::publish(int32_t i) {
+  char payload[18];
+  itoa(i, payload, 10);
+  return mqtt->publish(topic, payload, qos);
+}
+
+bool Adafruit_MQTT_Publish::publish(uint32_t i) {
+  char payload[18];
+  itoa(i, payload, 10);
+  return mqtt->publish(topic, payload, qos);
+}

Adafruit_MQTT.h

@@ -11,13 +11,18 @@
 
 #define MQTT_CTRL_CONNECT 0x1
 #define MQTT_CTRL_CONNECTACK 0x2
+#define MQTT_CTRL_PUBLISH 0x3
+
+#define MQTT_QOS_1 0x1
+#define MQTT_QOS_0 0x0
 
 #define SERVERNAME_SIZE  25
 #define USERNAME_SIZE  25
 #define KEY_SIZE  41
-#define FEEDNAME_SIZE  25
+#define FEEDNAME_SIZE  65
 
 #define CONNECT_TIMEOUT_MS 3000
+#define PUBLISH_TIMEOUT_MS 500
 
 #define MQTT_CONN_USERNAMEFLAG 0x80
 #define MQTT_CONN_PASSWORDFLAG 0x40
@@ -27,12 +32,16 @@
 #define MQTT_CONN_CLEANSESSION   0x02
 #define MQTT_CONN_KEEPALIVE 15  // in seconds
 
-#define MAXBUFFERSIZE 200
+#define MAXBUFFERSIZE 130
 
 class Adafruit_MQTT {
  public:
   Adafruit_MQTT(char *server, uint16_t port, char *user, char *key);
   uint8_t connectPacket(uint8_t *packet);
+
+  virtual boolean publish(char *topic, char *payload, uint8_t qos) {}
+  uint8_t publishPacket(uint8_t *packet, char *topic, char *payload, uint8_t qos);
+
  protected:
   int8_t errno;
   char servername[SERVERNAME_SIZE];
@@ -46,15 +55,17 @@ class Adafruit_MQTT {
 
 class Adafruit_MQTT_Publish {
  public:
-  Adafruit_MQTT_Publish(Adafruit_MQTT *mqttserver, char *feed);
+  Adafruit_MQTT_Publish(Adafruit_MQTT& mqttserver, char *feed, uint8_t qos = 0);
 
-  bool publish(char *s);
-  bool publish(double f);
+  //bool publish(char *s);
+  //bool publish(double f);
   bool publish(int32_t i);
+  bool publish(uint32_t i);
  
 private:
   Adafruit_MQTT *mqtt;
-  char feedname[FEEDNAME_SIZE];
+  char topic[FEEDNAME_SIZE];
+  uint8_t qos;
   int8_t errno;
 };
 

Adafruit_MQTT_CC3000.cpp

@@ -105,3 +105,43 @@ uint16_t Adafruit_MQTT_CC3000::readPacket(uint8_t *buffer, uint8_t maxlen, uint1
 int32_t Adafruit_MQTT_CC3000::close(void) {
   return mqttclient.close(); 
 }
+
+boolean Adafruit_MQTT_CC3000::publish(char *topic, char *data, uint8_t qos) {
+  uint8_t len = publishPacket(buffer, topic, data, qos);
+  Serial.println("MQTT publish packet:");
+  for (uint8_t i=0; i<len; i++) {
+    if (isprint(buffer[i]))
+      Serial.write(buffer[i]);
+    else  
+      Serial.print(" ");
+    Serial.print(" [0x");
+    if (buffer[i] < 0x10)
+      Serial.print("0");
+    Serial.print(buffer[i],HEX);
+    Serial.print("], ");
+    if (i % 8 == 7) Serial.println();
+  }
+  Serial.println();
+    
+  if (mqttclient.connected()) {
+    uint16_t ret = mqttclient.write(buffer, len);
+    //Serial.print("returned: "); Serial.println(ret);
+    if (ret != len)  return false;
+  } else {
+    Serial.println(F("Connection failed"));    
+    return false;
+  }
+  
+  if (qos > 0) {
+    Serial.println(F("Reply:"));
+    len = readPacket(buffer, 4, PUBLISH_TIMEOUT_MS);
+    for (uint8_t i=0; i<len; i++) {
+      Serial.write(buffer[i]); Serial.print(" [0x"); Serial.print(buffer[i], HEX); Serial.print("], ");
+    }
+    Serial.println();
+
+    return true;
+  } else {
+    return true;
+  }
+}

Adafruit_MQTT_CC3000.h

@@ -13,6 +13,8 @@ class Adafruit_MQTT_CC3000 : public Adafruit_MQTT {
   uint16_t readPacket(uint8_t *buffer, uint8_t maxlen, uint16_t timeout);
   int32_t close(void);
 
+  boolean publish(char *topic, char *payload, uint8_t qos);
+
  private:
   Adafruit_CC3000 *cc3000;
   Adafruit_CC3000_Client mqttclient;