HARSHA B.M
This is an simple example to send the data to the MQTT broker using W7500 ECO module
Dependencies: MQTT WIZnetInterface mbed
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W7500_ECO_Sending_String_to_MQTT_Broker
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HARSHA B.M
Revision 0:5db3b5b4ae2e, committed 2018-08-06
- Comitter:
- HarshaDRAGNEEL
- Date:
- Mon Aug 06 11:28:02 2018 +0000
- Child:
- 1:9c13b9f1f2b3
- Commit message:
- Used older mbed libraries to restrict the timer.h warning in Serial PC display
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MQTT.lib Mon Aug 06 11:28:02 2018 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/HarshaDRAGNEEL/code/MQTT/#97d1b3487179
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/WIZnetInterface.lib Mon Aug 06 11:28:02 2018 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/teams/WIZnet/code/WIZnetInterface/#c91884bd2713
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Aug 06 11:28:02 2018 +0000
@@ -0,0 +1,53 @@
+#include "mbed.h"
+#include "SPI.h"
+#include "MQTTEthernet.h"
+#include "MQTTClient.h"
+
+#define ECHO_SERVER_PORT 7
+
+Serial pc(USBTX, USBRX); //Enabling the Serial transmission between WIZ750SR and PC.
+char c[100]="Hello testing";
+
+int main(void) {
+ printf("Wait a second...\r\n");
+ char* topic = "ack"; //if we are subscribing the acknowledgement.
+ MQTTEthernet ipstack = MQTTEthernet();
+
+ MQTT::Client<MQTTEthernet, Countdown> client = MQTT::Client<MQTTEthernet, Countdown>(ipstack);
+
+ char* hostname = "iot.eclipse.org"; //Give the IP Address of the MQTT Broker.
+ int port = 1883; // Port number of the MQTT broker.
+
+
+ int rc = ipstack.connect(hostname, port);
+ if (rc != 0)
+ printf("rc from TCP connect is %d\n", rc);
+ printf("Topic: %s\r\n",topic);
+
+ MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
+ data.MQTTVersion = 3;
+ data.clientID.cstring = "Gintama";
+
+ if ((rc = client.connect(data)) == 0)
+ printf("rc from MQTT connect is %d\n", rc);
+
+
+ while (true) {
+
+ pc.printf("The value Sent to MQTT is: %s \n ",c);
+ MQTT::Message message;
+ char buf[100];
+ sprintf(buf, "%s", c);
+ message.qos = MQTT::QOS0;
+ message.retained = false;
+ message.dup = false;
+
+ message.payload = (void*)c;
+ message.payloadlen = strlen(c);
+
+ rc = client.publish("hellooo", message);
+ // pc.printf("Rc result: %c \n ",rc);
+ client.yield(60);
+ wait(60);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Aug 06 11:28:02 2018 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/6c34061e7c34 \ No newline at end of file