Proximity sensor mqtt version
Dependencies: MQTT-JMF WNCInterface mbed-rtos mbed
Fork of WNCInterface_MQTT_hivemq by
Diff: main.cpp
- Revision:
- 0:73334e2a82be
- Child:
- 1:1b516e98444f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Wed Sep 21 17:32:51 2016 +0000 @@ -0,0 +1,235 @@ +//#define MQTT_DEBUG + +#include "mbed.h" +#include "MQTTClient.h" +#include "MQTTFormat.h" + +//#include "MQTTEthernet.h" +#include "MQTTWNCInterface.h" +#include "rtos.h" +#include "k64f.h" + + +// connect options for MQTT broker +#define BROKER "broker.hivemq.com" // MQTT broker URL +#define PORT 1883 // MQTT broker port number +#define CLIENTID "96430312d8f7" // use K64F MAC address without colons +#define USERNAME "" // not required for MQTT Dashboard public broker +#define PASSWORD "" // not required for MQTT Dashboard public broker +#define TOPIC "jmf/Test1" // MQTT topic + +Queue<uint32_t, 6> messageQ; + +struct rcvd_errs{ + int err; + char *er; + }; + +rcvd_errs response[] = { + 200, "200 OK - Request has succeeded.", + 201, "201 Created - Request has been fulfilled and a new resource created.", + 202, "202 Accepted - The request has been accepted for processing, but the processing will be completed asynchronously", + 204, "204 No Content - The server has fulfilled the request but does not need to return an entity-body.", + 400, "400 Bad Request - Bad request (e.g. sending an array when the API is expecting a hash.)", + 401, "401 Unauthorized - No valid API key provided.", + 403, "403 Forbidden - You tried to access a disabled device, or your API key is not allowed to access that resource, etc.", + 404, "404 Not Found - The requested item could not be found.", + 405, "405 Method Not Allowed - The HTTP method specified is not allowed.", + 415, "415 Unsupported Media Type - The requested media type is currently not supported.", + 422, "422 Unprocessable Entity - Can result from sending invalid fields.", + 429, "429 Too Many Requests - The user has sent too many requests in a given period of time.", + 500, "500 Server errors - Something went wrong in the M2X server", + 502, "502 Server errors - Something went wrong in the M2X server", + 503, "503 Server errors - Something went wrong in the M2X server", + 504, "504 Server errors - Something went wrong in the M2X server", + }; +#define RCMAX sizeof(response)/sizeof(rcvd_errs) + +char * response_str(int rc) { + static char *unkown = "Unknown error code..."; + int i=0; + while( response[i].err != rc && i < RCMAX) + i++; + return (i<RCMAX? response[i].er : unkown); +} + +// LED color control function +void controlLED(color_t led_color) { + switch(led_color) { + case red : + greenLED = blueLED = 1; + redLED = 0.7; + break; + case green : + redLED = blueLED = 1; + greenLED = 0.7; + break; + case blue : + redLED = greenLED = 1; + blueLED = 0.7; + break; + case off : + redLED = greenLED = blueLED = 1; + break; + } +} + +// Switch 2 interrupt handler +void sw2_ISR(void) { + messageQ.put((uint32_t*)22); +} + +// Switch3 interrupt handler +void sw3_ISR(void) { + messageQ.put((uint32_t*)33); +} + +// MQTT message arrived callback function +void messageArrived(MQTT::MessageData& md) { + MQTT::Message &message = md.message; + printf("Receiving MQTT message: %.*s\r\n", message.payloadlen, (char*)message.payload); + + if (message.payloadlen == 3) { + if (strncmp((char*)message.payload, "red", 3) == 0) + controlLED(red); + + else if(strncmp((char*)message.payload, "grn", 3) == 0) + controlLED(green); + + else if(strncmp((char*)message.payload, "blu", 3) == 0) + controlLED(blue); + + else if(strncmp((char*)message.payload, "off", 3) == 0) + controlLED(off); + } +} + +int main() { + int rc, good = 0; + Timer tmr; + char* topic = TOPIC; + // turn off LED + controlLED(blue); + + // set SW2 and SW3 to generate interrupt on falling edge + switch2.fall(&sw2_ISR); + switch3.fall(&sw3_ISR); + + // initialize ethernet interface + MQTTwnc ipstack = MQTTwnc(); + + // get and display client network info + WNCInterface& eth = ipstack.getEth(); + + // construct the MQTT client + MQTT::Client<MQTTwnc, Countdown> client = MQTT::Client<MQTTwnc, Countdown>(ipstack); + + char* hostname = BROKER; + int port = PORT; + + printf("\r\n\r\nWelcome to the K64F MQTT Demo!\r\n"); + printf("\r\nConnected to local network...\r\n"); + printf("IP address is %s\r\n", eth.getIPAddress()); + printf("MAC address is %s\r\n", eth.getMACAddress()); + printf("Gateway address is %s\r\n", eth.getGateway()); + + MQTTPacket_connectData data = MQTTPacket_connectData_initializer; + int tries; + + while( !good ) { + tries=0; + // connect to TCP socket and check return code + tmr.start(); + rc = 1; + while( rc && tries < 3) { + printf("\r\n\r\nAttempting TCP connect to %s:%d: ", hostname, port); + rc = ipstack.connect(hostname, port); + if( rc ) { + printf("Failed!!\r\n"); + while( tmr.read_ms() < 5000 ) ; + tries++; + tmr.reset(); + } + else { + printf("Success!\r\n"); + rc = 0; + } + } + + data.MQTTVersion = 3; + data.clientID.cstring = eth.getMACAddress(); + // data.username.cstring = USERNAME; + // data.password.cstring = PASSWORD; + + // send MQTT connect packet and check return code + rc = 1; + tmr.reset(); + while( !client.isConnected() && rc && tries < 3) { + printf("Attempting (%d) MQTT connect to %s:%d: ", tries, hostname, port); + rc = client.connect(data); + if( rc ) { + printf("Connection Failed!\r\n"); + while( tmr.read_ms() < 5000 ); + tmr.reset(); + tries++; + } + else + printf("Connected!\r\n"); + } + + // subscribe to MQTT topic + tmr.reset(); + rc = 1; + while( rc && client.isConnected() && tries < 3) { + printf("We are %s, Subscribing to MQTT topic %s (%d): ", client.isConnected()?"connected":"NOT CONNECTED",topic,tries); + rc = client.subscribe(topic, MQTT::QOS0, messageArrived); + if( rc ) { + printf("Subscribe request failed!\r\n"); + while( tmr.read_ms() < 5000 ); + tries++; + tmr.reset(); + } + else { + good=1; + printf("Subscribe successful!\r\n"); + } + } + } + + MQTT::Message message; + char buf[100]; + message.qos = MQTT::QOS0; + message.retained = false; + message.dup = false; + message.payload = (void*)buf; + message.payloadlen = strlen(buf)+1; + + while(true) { + osEvent switchEvent = messageQ.get(100); + + if (switchEvent.value.v == 22 || switchEvent.value.v == 33) { + switch(switchEvent.value.v) { + case 22 : + sprintf(buf, "sw2"); + break; + case 33 : + sprintf(buf, "sw3"); + break; + } + printf("Publishing MQTT message: %s (%d)\r\n", (char*)message.payload, + message.payloadlen); + rc = client.publish(topic, message); + if( rc ) { + printf("Publish request failed! (%d)\r\n",rc); + } + else { + printf("Publish successful!\r\n"); + client.yield(100); + } + } + else { + client.yield(100); + } + } +} +