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this is a test
Dependencies: C12832 EthernetInterface MQTT mbed-rtos mbed
Fork of HelloMQTT by
main.cpp@0:0cae29831d01, 2014-02-04 (annotated)
- Committer:
- icraggs
- Date:
- Tue Feb 04 22:38:15 2014 +0000
- Revision:
- 0:0cae29831d01
- Child:
- 1:a1d5c7a6acbc
Sample program for MQTT client
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
icraggs | 0:0cae29831d01 | 1 | #include "mbed.h" |
icraggs | 0:0cae29831d01 | 2 | #include "EthernetInterface.h" |
icraggs | 0:0cae29831d01 | 3 | #include "C12832_lcd.h" |
icraggs | 0:0cae29831d01 | 4 | |
icraggs | 0:0cae29831d01 | 5 | #include "MQTTPacket.h" |
icraggs | 0:0cae29831d01 | 6 | |
icraggs | 0:0cae29831d01 | 7 | |
icraggs | 0:0cae29831d01 | 8 | DigitalOut myled(LED2); |
icraggs | 0:0cae29831d01 | 9 | C12832_LCD lcd; |
icraggs | 0:0cae29831d01 | 10 | |
icraggs | 0:0cae29831d01 | 11 | int publish() |
icraggs | 0:0cae29831d01 | 12 | { |
icraggs | 0:0cae29831d01 | 13 | MQTTPacket_connectData data = MQTTPacket_connectData_initializer; |
icraggs | 0:0cae29831d01 | 14 | int rc = 0; |
icraggs | 0:0cae29831d01 | 15 | char buf[200]; |
icraggs | 0:0cae29831d01 | 16 | int buflen = sizeof(buf); |
icraggs | 0:0cae29831d01 | 17 | TCPSocketConnection mysock; |
icraggs | 0:0cae29831d01 | 18 | MQTTString topicString = MQTTString_initializer; |
icraggs | 0:0cae29831d01 | 19 | char* payload = "I'm alive!"; |
icraggs | 0:0cae29831d01 | 20 | int payloadlen = strlen(payload); |
icraggs | 0:0cae29831d01 | 21 | int len = 0; |
icraggs | 0:0cae29831d01 | 22 | |
icraggs | 0:0cae29831d01 | 23 | mysock.connect("m2m.eclipse.org", 1883); |
icraggs | 0:0cae29831d01 | 24 | |
icraggs | 0:0cae29831d01 | 25 | data.clientID.cstring = "mbed test client - Ian Craggs"; |
icraggs | 0:0cae29831d01 | 26 | data.keepAliveInterval = 20; |
icraggs | 0:0cae29831d01 | 27 | data.cleansession = 1; |
icraggs | 0:0cae29831d01 | 28 | data.MQTTVersion = 3; |
icraggs | 0:0cae29831d01 | 29 | |
icraggs | 0:0cae29831d01 | 30 | len = MQTTSerialize_connect(buf, buflen, &data); |
icraggs | 0:0cae29831d01 | 31 | |
icraggs | 0:0cae29831d01 | 32 | topicString.cstring = "mbed NXP LPC1768"; |
icraggs | 0:0cae29831d01 | 33 | len += MQTTSerialize_publish(buf + len, buflen - len, 0, 0, 0, 0, topicString, payload, payloadlen); |
icraggs | 0:0cae29831d01 | 34 | |
icraggs | 0:0cae29831d01 | 35 | len += MQTTSerialize_disconnect(buf + len, buflen - len); |
icraggs | 0:0cae29831d01 | 36 | |
icraggs | 0:0cae29831d01 | 37 | rc = 0; |
icraggs | 0:0cae29831d01 | 38 | while (rc < len) |
icraggs | 0:0cae29831d01 | 39 | { |
icraggs | 0:0cae29831d01 | 40 | int rc1 = mysock.send(buf, len); |
icraggs | 0:0cae29831d01 | 41 | if (rc1 == -1) |
icraggs | 0:0cae29831d01 | 42 | { |
icraggs | 0:0cae29831d01 | 43 | lcd.printf("Send failed\n"); |
icraggs | 0:0cae29831d01 | 44 | break; |
icraggs | 0:0cae29831d01 | 45 | } |
icraggs | 0:0cae29831d01 | 46 | else |
icraggs | 0:0cae29831d01 | 47 | rc += rc1; |
icraggs | 0:0cae29831d01 | 48 | } |
icraggs | 0:0cae29831d01 | 49 | if (rc == len) |
icraggs | 0:0cae29831d01 | 50 | lcd.printf("Send succeeded\n"); |
icraggs | 0:0cae29831d01 | 51 | wait(0.2); |
icraggs | 0:0cae29831d01 | 52 | |
icraggs | 0:0cae29831d01 | 53 | return 0; |
icraggs | 0:0cae29831d01 | 54 | } |
icraggs | 0:0cae29831d01 | 55 | |
icraggs | 0:0cae29831d01 | 56 | int main() { |
icraggs | 0:0cae29831d01 | 57 | EthernetInterface eth; |
icraggs | 0:0cae29831d01 | 58 | eth.init(); //Use DHCP |
icraggs | 0:0cae29831d01 | 59 | eth.connect(); |
icraggs | 0:0cae29831d01 | 60 | lcd.printf("IP Address is %s\n", eth.getIPAddress()); |
icraggs | 0:0cae29831d01 | 61 | |
icraggs | 0:0cae29831d01 | 62 | while(1) { |
icraggs | 0:0cae29831d01 | 63 | myled = 1; |
icraggs | 0:0cae29831d01 | 64 | publish(); |
icraggs | 0:0cae29831d01 | 65 | wait(0.2); |
icraggs | 0:0cae29831d01 | 66 | myled = 0; |
icraggs | 0:0cae29831d01 | 67 | publish(); |
icraggs | 0:0cae29831d01 | 68 | wait(0.2); |
icraggs | 0:0cae29831d01 | 69 | } |
icraggs | 0:0cae29831d01 | 70 | |
icraggs | 0:0cae29831d01 | 71 | eth.disconnect(); |
icraggs | 0:0cae29831d01 | 72 | } |