/**
* \brief Callback to get the MQTT status update.
*
* \param[in] conn_id instance id of connection which is being used.
* \param[in] type type of MQTT notification. Possible types are:
* - [MQTT_CALLBACK_SOCK_CONNECTED](@ref MQTT_CALLBACK_SOCK_CONNECTED)
* - [MQTT_CALLBACK_CONNECTED](@ref MQTT_CALLBACK_CONNECTED)
* - [MQTT_CALLBACK_PUBLISHED](@ref MQTT_CALLBACK_PUBLISHED)
* - [MQTT_CALLBACK_SUBSCRIBED](@ref MQTT_CALLBACK_SUBSCRIBED)
* - [MQTT_CALLBACK_UNSUBSCRIBED](@ref MQTT_CALLBACK_UNSUBSCRIBED)
* - [MQTT_CALLBACK_DISCONNECTED](@ref MQTT_CALLBACK_DISCONNECTED)
* - [MQTT_CALLBACK_RECV_PUBLISH](@ref MQTT_CALLBACK_RECV_PUBLISH)
* \param[in] data A structure contains notification informations. @ref mqtt_data
*/
static void mqtt_callback(struct mqtt_module *module_inst, int type, union mqtt_data *data)
{
switch (type) {
case MQTT_CALLBACK_SOCK_CONNECTED:
{
/*
* If connecting to broker server is complete successfully, Start sending CONNECT message of MQTT.
* Or else retry to connect to broker server.
*/
if (data->sock_connected.result >= 0) {
mqtt_connect_broker(module_inst, 1, NULL, NULL, mqtt_user, NULL, NULL, 0, 0, 0);
} else {
printf("Connect fail to server(%s)! retry it automatically.\r\n", main_mqtt_broker);
mqtt_connect(module_inst, main_mqtt_broker); /* Retry that. */
}
}
break;
case MQTT_CALLBACK_CONNECTED:
if (data->connected.result == MQTT_CONN_RESULT_ACCEPT) {
/* Subscribe chat topic. */
mqtt_subscribe(module_inst, MAIN_CHAT_TOPIC "#", 0);
/* Enable USART receiving callback. */
usart_enable_callback(&cdc_uart_module, USART_CALLBACK_BUFFER_RECEIVED);
printf("Preparation of the chat has been completed.\r\n");
} else {
/* Cannot connect for some reason. */
printf("MQTT broker decline your access! error code %d\r\n", data->connected.result);
}
break;
case MQTT_CALLBACK_RECV_PUBLISH:
/* You received publish message which you had subscribed. */
if (data->recv_publish.topic != NULL && data->recv_publish.msg != NULL) {
if (!strncmp(data->recv_publish.topic, MAIN_CHAT_TOPIC, strlen(MAIN_CHAT_TOPIC))) {
/* Print user name and message */
for (int i = strlen(MAIN_CHAT_TOPIC); i < data->recv_publish.topic_size; i++) {
printf("%c", data->recv_publish.topic[i]);
}
printf(" >> ");
for (int i = 0; i < data->recv_publish.msg_size; i++) {
printf("%c", data->recv_publish.msg[i]);
}
printf("\r\n");
}
}
break;
case MQTT_CALLBACK_DISCONNECTED:
/* Stop timer and USART callback. */
printf("MQTT disconnected\r\n");
usart_disable_callback(&cdc_uart_module, USART_CALLBACK_BUFFER_RECEIVED);
break;
}
}
static void mqtt_callback(struct mqtt_module *module_inst, int type, union mqtt_data *data)
{
printf("MQTT CALLBACK ENTER"DEBUG_EOL);
switch (type) {
case MQTT_CALLBACK_SOCK_CONNECTED:
{
printf("MQTT SOCK CONNECTED"DEBUG_EOL);
/*
* If connecting to broker server is complete successfully, Start sending CONNECT message of MQTT.
* Or else retry to connect to broker server.
*/
if (data->sock_connected.result >= 0) {
printf("mqtt connect broker"DEBUG_EOL);
printf("socket %i", data->sock_connected.result);
int response = mqtt_connect_broker(module_inst, 1, NULL, NULL, gau0TheThingsIOHttpSubsURL, NULL, NULL, 0, 0, 0);
// int response = mqtt_connect_broker(module_inst, 1, "1", "test", NULL, NULL, NULL, 0, 0, 0);
printf("response %s %i"DEBUG_EOL,gau0TheThingsIOHttpSubsURL, response);
} else {
printf("Connect fail to server(%s)! retry it automatically.\r\n", main_mqtt_broker);
mqtt_connect(module_inst, main_mqtt_broker); /* Retry that. */
}
}
break;
case MQTT_CALLBACK_CONNECTED:
if (data->connected.result == MQTT_CONN_RESULT_ACCEPT) {
/* Subscribe chat topic. */
/* the subscribe topic in the subscribe endpoint */
printf("subscribe topic %s"DEBUG_EOL, gau0TheThingsIOHttpSubsURL);
mqtt_subscribe(module_inst, gau0TheThingsIOHttpSubsURL, 0);
/* Enable USART receiving callback. */
// TODO we have mqtt connection
//usart_enable_callback(&cdc_uart_module, USART_CALLBACK_BUFFER_RECEIVED);
printf("Preparation of the chat has been completed.\r\n");
} else {
/* Cannot connect for some reason. */
printf("MQTT broker decline your access! error code %d\r\n", data->connected.result);
}
break;
case MQTT_CALLBACK_RECV_PUBLISH:
printf("--- start receiving MQTT subscribe data ---"DEBUG_EOL);
/* You received publish message which you had subscribed. */
if (data->recv_publish.topic != NULL && data->recv_publish.msg != NULL) {
char message[data->recv_publish.msg_size];
for (int i = 0; i < data->recv_publish.msg_size; i++) {
// printf("%c", data->recv_publish.msg[i]);
message[i] = data->recv_publish.msg[i];
}
//message[data->recv_publish.msg_size +] = '\0';
if (subscribe_cb)
{
subscribe_cb(&message);
}
printf(DEBUG_EOL);
printf("--- end receiving MQTT subscribe data ---"DEBUG_EOL);
/* printf("%c", data->recv_publish.topic[i]);
printf("\r\n");
if (!strncmp(data->recv_publish.topic, MAIN_CHAT_TOPIC, strlen(MAIN_CHAT_TOPIC))) {
///* Print user name and message
for (int i = strlen(MAIN_CHAT_TOPIC); i < data->recv_publish.topic_size; i++) {
printf("%c", data->recv_publish.topic[i]);
}
printf(" >> ");
for (int i = 0; i < data->recv_publish.msg_size; i++) {
printf("%c", data->recv_publish.msg[i]);
}
} */
}
break;
case MQTT_CALLBACK_DISCONNECTED:
/* Stop timer and USART callback. */
//DBG_LOG("\r\nMQTT disconnected :");
//DBG_LOG_DEV("length of the data is %d",len);
if (gboolAlwaysMQTTConnected)
{
mqtt_connect(module_inst, main_mqtt_broker);
}
// TODO we don't have mqtt connection
//usart_disable_callback(&cdc_uart_module, USART_CALLBACK_BUFFER_RECEIVED);
break;
}
}
