![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
BG96 Module MQTT client example
Dependencies: MQTT NetworkSocketAPI mbed
Fork of Nucleo_NbIotBG96_A2_cloud_IBM by
main.cpp
- Committer:
- abci5961
- Date:
- 2017-11-20
- Revision:
- 2:b72797c38464
- Parent:
- 1:a622606a49fd
- Child:
- 3:e26690c0e2c7
File content as of revision 2:b72797c38464:
/* BG96 NetworkSocketAPI Example Program * Copyright (c) 2015 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "mbed.h" #include "BG96Interface.h" #include "TCPSocket.h" #include "MQTTClient.h" #include "MQTT_GSM.h" #include <ctype.h> //#include "x_nucleo_iks01a1.h" #include "XNucleoIKS01A2.h" #include "BG96.h" //------------------------------------ // Hyperterminal default configuration // 9600 bauds, 8-bit data, no parity //------------------------------------ Serial pc(SERIAL_TX, SERIAL_RX); DigitalOut myled(LED1); bool quickstartMode = true; #define MQTT_MAX_PACKET_SIZE 300 #define MQTT_MAX_PAYLOAD_SIZE 500 #define ORG_QUICKSTART // comment to connect to play.internetofthings.ibmcloud.com //#define SUBSCRIBE // uncomment to subscribe to broker msgs (not to be used with IBM broker) // Configuration values needed to connect to IBM IoT Cloud #define BROKER_URL ".messaging.internetofthings.ibmcloud.com"; #ifdef ORG_QUICKSTART #define ORG "quickstart" // connect to quickstart.internetofthings.ibmcloud.com/ For a registered connection, replace with your org #define ID "" #define AUTH_TOKEN "" #define DEFAULT_TYPE_NAME "iotsample-mbed-Nucleo" #define TOPIC "iot-2/evt/status/fmt/json" #else // not def ORG_QUICKSTART #define ORG "pvko17" // connect to play.internetofthings.ibmcloud.com/ For a registered connection, replace with your org #define ID "testtype_112233445566" // For a registered connection, replace with your id #define AUTH_TOKEN "testtype_112233445566" // For a registered connection, replace with your auth-token #define DEFAULT_TYPE_NAME "TestType" #define TOPIC "iot-2/type/TestType/id/testtype_112233445566/evt/status/fmt/json" #endif // network credential #define APN "web.omnitel.it" //VODAFONE apn definition's //#define APN "internet.wind" //WIND apn definition's #define PASSW "" #define USNAME "" #define TYPE DEFAULT_TYPE_NAME // For a registered connection, replace with your type #define MQTT_PORT 1883 #define MQTT_TLS_PORT 8883 #define IBM_IOT_PORT MQTT_PORT char id[30] = ID; // mac without colons char org[12] = ORG; int connack_rc = 0; // MQTT connack return code //const char* ip_addr = "11.12.13.14"; //char* host_addr = "11.12.13.14"; char sensor_id[50]; char type[30] = TYPE; char auth_token[30] = AUTH_TOKEN; // Auth_token is only used in non-quickstart mode bool netConnecting = false; int connectTimeout = 1000; bool mqttConnecting = false; bool netConnected = false; bool connected = false; int retryAttempt = 0; char subscription_url[MQTT_MAX_PAYLOAD_SIZE]; #define SENSOR_ENABLED 1 #define SENSOR_MODEL 2 #define FW_REV "1.0a" PressureSensor *pressure_sensor; HumiditySensor *humidity_sensor; TempSensor *temp_sensor1; MQTT::Message message; MQTTString TopicName={TOPIC}; MQTT::MessageData MsgData(TopicName, message); /* Instantiate the expansion board */ static XNucleoIKS01A2 *mems_expansion_board = XNucleoIKS01A2::instance(D14, D15, D4, D5); /* Retrieve the composing elements of the expansion board */ static LSM303AGRMagSensor *magnetometer = mems_expansion_board->magnetometer; static HTS221Sensor *hum_temp = mems_expansion_board->ht_sensor; static LPS22HBSensor *press_temp = mems_expansion_board->pt_sensor; static LSM6DSLSensor *acc_gyro = mems_expansion_board->acc_gyro; static LSM303AGRAccSensor *accelerometer = mems_expansion_board->accelerometer; void subscribe_cb(MQTT::MessageData & msgMQTT) { char msg[MQTT_MAX_PAYLOAD_SIZE]; msg[0]='\0'; strncat (msg, (char*)msgMQTT.message.payload, msgMQTT.message.payloadlen); printf ("--->>> subscribe_cb msg: %s\n\r", msg); } int subscribe(MQTT::Client<MQTT_GSM, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_GSM* ipstack) { char* pubTopic = TOPIC; return client->subscribe(pubTopic, MQTT::QOS1, subscribe_cb); } int connect(MQTT::Client<MQTT_GSM, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_GSM* ipstack) { const char* iot_ibm = BROKER_URL; char hostname[strlen(org) + strlen(iot_ibm) + 1]; sprintf(hostname, "%s%s", org, iot_ibm); // Construct clientId - d:org:type:id char clientId[strlen(org) + strlen(type) + strlen(id) + 5]; #ifdef ORG_QUICKSTART sprintf(clientId, "d:%s:%s:%s", org, type, id); //@@ #else sprintf(clientId, "g:%s:%s:%s", org, type, id); //@@ #endif sprintf(subscription_url, "%s.%s/#/device/%s/sensor/", org, "internetofthings.ibmcloud.com",id); netConnecting = true; ipstack->open(&ipstack->getGSM()); int rc = ipstack->connect(hostname, IBM_IOT_PORT, connectTimeout); if (rc != 0) { //WARN("IP Stack connect returned: %d\n", rc); return rc; } pc.printf ("--->TCP Connected\n\r"); netConnected = true; netConnecting = false; // MQTT Connect mqttConnecting = true; MQTTPacket_connectData data = MQTTPacket_connectData_initializer; data.MQTTVersion = 3; data.struct_version=0; data.clientID.cstring = clientId; if (!quickstartMode) { data.username.cstring = "use-token-auth"; data.password.cstring = auth_token; } if ((rc = client->connect(data)) == 0) { connected = true; pc.printf ("--->MQTT Connected\n\r"); #ifdef SUBSCRIBE if (!subscribe(client, ipstack)) printf ("--->>>MQTT subscribed to: %s\n\r",TOPIC); #endif } else { //WARN("MQTT connect returned %d\n", rc); } if (rc >= 0) connack_rc = rc; mqttConnecting = false; return rc; } int getConnTimeout(int attemptNumber) { // First 10 attempts try within 3 seconds, next 10 attempts retry after every 1 minute // after 20 attempts, retry every 10 minutes return (attemptNumber < 10) ? 3 : (attemptNumber < 20) ? 60 : 600; } void attemptConnect(MQTT::Client<MQTT_GSM, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_GSM* ipstack) { connected = false; while (connect(client, ipstack) != MQTT_CONNECTION_ACCEPTED) { if (connack_rc == MQTT_NOT_AUTHORIZED || connack_rc == MQTT_BAD_USERNAME_OR_PASSWORD) { printf ("File: %s, Line: %d Error: %d\n\r",__FILE__,__LINE__, connack_rc); return; // don't reattempt to connect if credentials are wrong } int timeout = getConnTimeout(++retryAttempt); //WARN("Retry attempt number %d waiting %d\n", retryAttempt, timeout); // if ipstack and client were on the heap we could deconstruct and goto a label where they are constructed // or maybe just add the proper members to do this disconnect and call attemptConnect(...) // this works - reset the system when the retry count gets to a threshold if (retryAttempt == 5){ pc.printf ("\n\n\rFAIL!! system reset!!\n\n\r"); NVIC_SystemReset(); } else wait(timeout); } } float hum_global = 50.0; uint32_t n_msg = 0; int publish(MQTT::Client<MQTT_GSM, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTT_GSM* ipstack) { MQTT::Message message; char* pubTopic = TOPIC; char buf[MQTT_MAX_PAYLOAD_SIZE]; float temp, temp1, temp2, press, hum; #if SENSOR_ENABLED pc.printf("A02 reading sensors..."); hum_temp->get_temperature(&temp1); hum_temp->get_humidity(&hum); press_temp->get_temperature(&temp2); press_temp->get_pressure(&press); temp = (temp1+temp2)/2; pc.printf(" DONE\r\n"); #else temp=25.5; hum_global +=0.1; if (hum_global>99.0) hum_global = 50.0; hum=hum_global; press=999; #endif #ifdef ORG_QUICKSTART sprintf(buf, "{\"d\":{\"ST\":\"Nucleo-IoT-mbed\",\"Temp\":%0.4f,\"Pressure\":%0.4f,\"Humidity\":%0.4f}}", temp, press, hum); #else sprintf (buf, "{\"%s\": {\"temp\":%0.4f,\"humidity\":%0.4f,\"pressure\":%0.4f,\"ambient\":0,\"uv\":0,\"accel_X\":0,\"accel_Y\":0,\"accel_Z\":0}}", sensor_id, temp, hum, press); #endif message.qos = MQTT::QOS0; message.retained = false; message.dup = false; message.payload = (void*)buf; message.payloadlen = strlen(buf); //LOG("Publishing %s\n\r", buf); n_msg++; pc.printf("Publishing V%s #%d %s\n\r", FW_REV, n_msg, buf); return client->publish(pubTopic, message); } int loop_count = 0; void test_sens(void); int main() { const char * apn = APN; // Network must be visible otherwise it can't connect const char * username = USNAME; const char * password = PASSW; BG96Interface bg96_if(D8, D2, false); //sprintf(sensor_id,"%s",bg96_if.get_mac_address()); //Timer tyeld; //change serial baud to 115200 pc.baud(115200); wait(0.1); myled=1; //wait(0.5); pc.printf("\r\n*************************************************"); wait( 0.1 ); pc.printf("\r\nAvnet Silica NbIotBG96 A02 mbed-os application\r\n"); wait( 0.1 ); pc.printf("MBED online version %s\r\n", FW_REV); wait( 0.1 ); //pc.printf("\r\nwait for APN ready ...\r\n"); //wait( 0.1 ); #if SENSOR_ENABLED /* Enable all sensors */ hum_temp->enable(); press_temp->enable(); //magnetometer->enable(); //accelerometer->enable(); //acc_gyro->enable_x(); //acc_gyro->enable_g(); #endif quickstartMode=false; if (strcmp(org, "quickstart") == 0){quickstartMode = true;} MQTT_GSM ipstack(bg96_if, apn, username, password); MQTT::Client<MQTT_GSM, Countdown, MQTT_MAX_PACKET_SIZE> client(ipstack); if (quickstartMode){ char mac[50]; // remove all : from mac char *digit=NULL; sprintf (id,"%s", ""); sprintf (mac,"%s",ipstack.getGSM().get_mac_address()); digit = strtok (mac,":"); while (digit != NULL) { strcat (id, digit); digit = strtok (NULL, ":"); } } attemptConnect(&client, &ipstack); if (connack_rc == MQTT_NOT_AUTHORIZED || connack_rc == MQTT_BAD_USERNAME_OR_PASSWORD) { while (true) wait(1.0); // Permanent failures - don't retry } myled=0; sprintf(sensor_id,"%s",bg96_if.get_mac_address()); while (true) { if (++loop_count == 60) { // Publish a message every 30 second pc.printf("\n"); myled=1; if (publish(&client, &ipstack) != 0) { myled=0; attemptConnect(&client, &ipstack); // if we have lost the connection } //else myled=0; loop_count = 0; } // int start = tyeld.read_ms(); client.yield(500); // allow the MQTT client to receive messages pc.printf ("loop %d\r", (loop_count+1)); //: %d\n\r",tyeld.read_ms()-start); } } /* Helper function for printing floats & doubles */ static char *print_double(char* str, double v, int decimalDigits=2) { int i = 1; int intPart, fractPart; int len; char *ptr; /* prepare decimal digits multiplicator */ for (;decimalDigits!=0; i*=10, decimalDigits--); /* calculate integer & fractinal parts */ intPart = (int)v; fractPart = (int)((v-(double)(int)v)*i); /* fill in integer part */ sprintf(str, "%i.", intPart); /* prepare fill in of fractional part */ len = strlen(str); ptr = &str[len]; /* fill in leading fractional zeros */ for (i/=10;i>1; i/=10, ptr++) { if (fractPart >= i) { break; } *ptr = '0'; } /* fill in (rest of) fractional part */ sprintf(ptr, "%i", fractPart); return str; } //for testing sensor board ... void test_sens(void) { while(1) { float value1, value2; char buffer1[32], buffer2[32]; printf("\r\n"); hum_temp->get_temperature(&value1); hum_temp->get_humidity(&value2); printf("HTS221: [temp] %7s C, [hum] %s%%\r\n", print_double(buffer1, value1), print_double(buffer2, value2)); press_temp->get_temperature(&value1); press_temp->get_pressure(&value2); printf("LPS22HB: [temp] %7s C, [press] %s mbar\r\n", print_double(buffer1, value1), print_double(buffer2, value2)); wait(2); } }