Nenad Jovicic / Mbed OS PMK2021_MQTT_ESP8266_IKS01A3

mqtt esp8266

Dependencies:   X_NUCLEO_IKS01A3

PMK2021_MQTT_ESP8266_IKS01A3

main.cpp@4:c737f3d85a19, 2021-04-27 (annotated)

Committer:
nenad
Date:
Tue Apr 27 17:32:05 2021 +0000
Revision:
4:c737f3d85a19
Parent:
1:276a09a95334 
mqtt esp8266 test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nenad 0:75fa10a22545 1
nenad 0:75fa10a22545 2 #include "mbed.h"
nenad 0:75fa10a22545 3 #include "platform/mbed_thread.h"
nenad 0:75fa10a22545 4 #include <MQTTClientMbedOs.h>
nenad 4:c737f3d85a19 5 #include "XNucleoIKS01A3.h"
nenad 4:c737f3d85a19 6
nenad 0:75fa10a22545 7 // Blinking rate in milliseconds
nenad 0:75fa10a22545 8 #define BLINKING_RATE_MS 500
nenad 0:75fa10a22545 9 // Initialise the digital pin LED1 as an output
nenad 4:c737f3d85a19 10 DigitalOut led(LED1);
nenad 1:276a09a95334 11
nenad 4:c737f3d85a19 12 /* Instantiate the expansion board */
nenad 4:c737f3d85a19 13 static XNucleoIKS01A3 *mems_expansion_board = XNucleoIKS01A3::instance(D14, D15, D4, D5, A3, D6, A4);
nenad 4:c737f3d85a19 14
nenad 4:c737f3d85a19 15 /* Retrieve the composing elements of the expansion board */
nenad 4:c737f3d85a19 16 static STTS751Sensor *t_sensor = mems_expansion_board->t_sensor;
nenad 4:c737f3d85a19 17
nenad 4:c737f3d85a19 18
nenad 4:c737f3d85a19 19 volatile int mems_event = 0;
nenad 4:c737f3d85a19 20 uint32_t previous_tick = 0;
nenad 4:c737f3d85a19 21 uint32_t current_tick = 0;
nenad 4:c737f3d85a19 22 uint8_t high = 0, low = 0;
nenad 4:c737f3d85a19 23 float temperature = 0.0f;
nenad 4:c737f3d85a19 24 char buffer[32];
nenad 4:c737f3d85a19 25
nenad 4:c737f3d85a19 26 void INT_cb();
nenad 4:c737f3d85a19 27
nenad 4:c737f3d85a19 28 /* Helper function for printing floats & doubles */
nenad 4:c737f3d85a19 29 static char *print_double(char *str, double v, int decimalDigits = 2)
nenad 4:c737f3d85a19 30 {
nenad 4:c737f3d85a19 31 int i = 1;
nenad 4:c737f3d85a19 32 int intPart, fractPart;
nenad 4:c737f3d85a19 33 int len;
nenad 4:c737f3d85a19 34 char *ptr;
nenad 4:c737f3d85a19 35
nenad 4:c737f3d85a19 36 /* prepare decimal digits multiplicator */
nenad 4:c737f3d85a19 37 for (; decimalDigits != 0; i *= 10, decimalDigits--);
nenad 4:c737f3d85a19 38
nenad 4:c737f3d85a19 39 /* calculate integer & fractinal parts */
nenad 4:c737f3d85a19 40 intPart = (int)v;
nenad 4:c737f3d85a19 41 fractPart = (int)((v - (double)(int)v) * i);
nenad 4:c737f3d85a19 42
nenad 4:c737f3d85a19 43 /* fill in integer part */
nenad 4:c737f3d85a19 44 sprintf(str, "%i.", intPart);
nenad 4:c737f3d85a19 45
nenad 4:c737f3d85a19 46 /* prepare fill in of fractional part */
nenad 4:c737f3d85a19 47 len = strlen(str);
nenad 4:c737f3d85a19 48 ptr = &str[len];
nenad 4:c737f3d85a19 49
nenad 4:c737f3d85a19 50 /* fill in leading fractional zeros */
nenad 4:c737f3d85a19 51 for (i /= 10; i > 1; i /= 10, ptr++) {
nenad 4:c737f3d85a19 52 if (fractPart >= i) {
nenad 4:c737f3d85a19 53 break;
nenad 4:c737f3d85a19 54 }
nenad 4:c737f3d85a19 55 *ptr = '0';
nenad 4:c737f3d85a19 56 }
nenad 4:c737f3d85a19 57
nenad 4:c737f3d85a19 58 /* fill in (rest of) fractional part */
nenad 4:c737f3d85a19 59 sprintf(ptr, "%i", fractPart);
nenad 4:c737f3d85a19 60
nenad 4:c737f3d85a19 61 return str;
nenad 4:c737f3d85a19 62 }
nenad 0:75fa10a22545 63
nenad 0:75fa10a22545 64 InterruptIn button(USER_BUTTON);
nenad 0:75fa10a22545 65 int arrivedcount = 0;
nenad 0:75fa10a22545 66 TCPSocket socket;
nenad 0:75fa10a22545 67 MQTTClient client(&socket);
nenad 0:75fa10a22545 68 MQTT::Message message;
nenad 0:75fa10a22545 69 int button_pressed=0;
nenad 0:75fa10a22545 70
nenad 4:c737f3d85a19 71 char* topic_pub = "PMK-client-temperature";
nenad 4:c737f3d85a19 72 char* topic_sub = "PMK-client-topic_sub";
nenad 1:276a09a95334 73
nenad 1:276a09a95334 74 WiFiInterface *wifi;
nenad 1:276a09a95334 75
nenad 1:276a09a95334 76 const char *sec2str(nsapi_security_t sec)
nenad 1:276a09a95334 77 {
nenad 1:276a09a95334 78 switch (sec) {
nenad 1:276a09a95334 79 case NSAPI_SECURITY_NONE:
nenad 1:276a09a95334 80 return "None";
nenad 1:276a09a95334 81 case NSAPI_SECURITY_WEP:
nenad 1:276a09a95334 82 return "WEP";
nenad 1:276a09a95334 83 case NSAPI_SECURITY_WPA:
nenad 1:276a09a95334 84 return "WPA";
nenad 1:276a09a95334 85 case NSAPI_SECURITY_WPA2:
nenad 1:276a09a95334 86 return "WPA2";
nenad 1:276a09a95334 87 case NSAPI_SECURITY_WPA_WPA2:
nenad 1:276a09a95334 88 return "WPA/WPA2";
nenad 1:276a09a95334 89 case NSAPI_SECURITY_UNKNOWN:
nenad 1:276a09a95334 90 default:
nenad 1:276a09a95334 91 return "Unknown";
nenad 1:276a09a95334 92 }
nenad 1:276a09a95334 93 }
nenad 1:276a09a95334 94
nenad 1:276a09a95334 95 int scan_demo(WiFiInterface *wifi)
nenad 1:276a09a95334 96 {
nenad 1:276a09a95334 97 WiFiAccessPoint *ap;
nenad 1:276a09a95334 98 printf("Scan:\n");
nenad 1:276a09a95334 99 int count = wifi->scan(NULL,0);
nenad 1:276a09a95334 100 if (count <= 0) {
nenad 1:276a09a95334 101 printf("scan() failed with return value: %d\n", count);
nenad 1:276a09a95334 102 return 0;
nenad 1:276a09a95334 103 }
nenad 1:276a09a95334 104 /* Limit number of network arbitrary to 15 */
nenad 1:276a09a95334 105 count = count < 15 ? count : 15;
nenad 1:276a09a95334 106 ap = new WiFiAccessPoint[count];
nenad 1:276a09a95334 107 count = wifi->scan(ap, count);
nenad 1:276a09a95334 108 if (count <= 0) {
nenad 1:276a09a95334 109 printf("scan() failed with return value: %d\n", count);
nenad 1:276a09a95334 110 return 0;
nenad 1:276a09a95334 111 }
nenad 1:276a09a95334 112 for (int i = 0; i < count; i++) {
nenad 1:276a09a95334 113 printf("Network: %s secured: %s BSSID: %hhX:%hhX:%hhX:%hhx:%hhx:%hhx RSSI: %hhd Ch: %hhd\n", ap[i].get_ssid(),
nenad 1:276a09a95334 114 sec2str(ap[i].get_security()), ap[i].get_bssid()[0], ap[i].get_bssid()[1], ap[i].get_bssid()[2],
nenad 1:276a09a95334 115 ap[i].get_bssid()[3], ap[i].get_bssid()[4], ap[i].get_bssid()[5], ap[i].get_rssi(), ap[i].get_channel());
nenad 1:276a09a95334 116 }
nenad 1:276a09a95334 117 printf("%d networks available.\n", count);
nenad 1:276a09a95334 118 delete[] ap;
nenad 1:276a09a95334 119 return count;
nenad 1:276a09a95334 120 }
nenad 1:276a09a95334 121
nenad 0:75fa10a22545 122 void messageArrived(MQTT::MessageData& md)
nenad 0:75fa10a22545 123 {
nenad 0:75fa10a22545 124 MQTT::Message &message = md.message;
nenad 1:276a09a95334 125 printf("Message arrived: qos %d, retained %d, dup %d, packetid %d\r\n", message.qos, message.retained, message.dup, message.id);
nenad 1:276a09a95334 126 printf("Payload %.*s\r\n", message.payloadlen, (char*)message.payload);
nenad 0:75fa10a22545 127 ++arrivedcount;
nenad 0:75fa10a22545 128 }
nenad 0:75fa10a22545 129
nenad 4:c737f3d85a19 130 void buttonFunction() {
nenad 4:c737f3d85a19 131 button_pressed=1;
nenad 0:75fa10a22545 132 }
nenad 0:75fa10a22545 133
nenad 0:75fa10a22545 134
nenad 0:75fa10a22545 135
nenad 0:75fa10a22545 136
nenad 0:75fa10a22545 137 int main()
nenad 0:75fa10a22545 138 {
nenad 4:c737f3d85a19 139 /* Attach callback to STTS751 INT */
nenad 4:c737f3d85a19 140 t_sensor->attach_int_irq(&INT_cb);
nenad 4:c737f3d85a19 141 /* Enable STTS751 temperature sensor */
nenad 4:c737f3d85a19 142 t_sensor->enable();
nenad 4:c737f3d85a19 143 /* Set ODR to 4Hz */
nenad 4:c737f3d85a19 144 t_sensor->set_odr(4.0f);
nenad 4:c737f3d85a19 145 /* Set Low Temperature Threshold */
nenad 4:c737f3d85a19 146 t_sensor->set_low_temp_thr(22.0f);
nenad 4:c737f3d85a19 147 /* Set High Temperature Threshold */
nenad 4:c737f3d85a19 148 t_sensor->set_high_temp_thr(28.0f);
nenad 4:c737f3d85a19 149 /* Enable Event pin */
nenad 4:c737f3d85a19 150 t_sensor->set_event_pin(1);
nenad 4:c737f3d85a19 151 /* Get beginning status */
nenad 4:c737f3d85a19 152 t_sensor->get_temp_limit_status(NULL, NULL, NULL);
nenad 4:c737f3d85a19 153
nenad 0:75fa10a22545 154 button.rise(&buttonFunction); // attach the address of the flip function to the rising edge
nenad 0:75fa10a22545 155
nenad 0:75fa10a22545 156 const char* hostname = "broker.mqttdashboard.com";
nenad 0:75fa10a22545 157 int port = 1883;
nenad 0:75fa10a22545 158
nenad 1:276a09a95334 159 wifi = WiFiInterface::get_default_instance();
nenad 1:276a09a95334 160 if (!wifi) {
nenad 1:276a09a95334 161 printf("ERROR: No WiFiInterface found.\n");
nenad 1:276a09a95334 162 return -1;
nenad 1:276a09a95334 163 }
nenad 1:276a09a95334 164
nenad 1:276a09a95334 165 int count = scan_demo(wifi);
nenad 1:276a09a95334 166 if (count == 0) {
nenad 1:276a09a95334 167 printf("No WIFI APs found - can't continue further.\n");
nenad 1:276a09a95334 168 return -1;
nenad 1:276a09a95334 169 }
nenad 0:75fa10a22545 170
nenad 1:276a09a95334 171 printf("\nConnecting to %s...\n", MBED_CONF_APP_WIFI_SSID);
nenad 1:276a09a95334 172 int ret = wifi->connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, NSAPI_SECURITY_WPA_WPA2);
nenad 1:276a09a95334 173 if (ret != 0) {
nenad 1:276a09a95334 174 printf("\nConnection error: %d\n", ret);
nenad 1:276a09a95334 175 return -1;
nenad 1:276a09a95334 176 }
nenad 1:276a09a95334 177
nenad 1:276a09a95334 178 printf("Success\n\n");
nenad 1:276a09a95334 179 printf("MAC: %s\n", wifi->get_mac_address());
nenad 1:276a09a95334 180 printf("IP: %s\n", wifi->get_ip_address());
nenad 1:276a09a95334 181 printf("Netmask: %s\n", wifi->get_netmask());
nenad 1:276a09a95334 182 printf("Gateway: %s\n", wifi->get_gateway());
nenad 4:c737f3d85a19 183 printf("RSSI: %d\n\n", wifi->get_rssi());
nenad 4:c737f3d85a19 184
nenad 1:276a09a95334 185 socket.open(wifi);
nenad 0:75fa10a22545 186 socket.connect(hostname, port);
nenad 0:75fa10a22545 187
nenad 0:75fa10a22545 188 int rc=0;
nenad 0:75fa10a22545 189
nenad 0:75fa10a22545 190 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
nenad 0:75fa10a22545 191 data.MQTTVersion = 3;
nenad 4:c737f3d85a19 192 data.clientID.cstring = "PMK-client";
nenad 0:75fa10a22545 193 //data.username.cstring = "testuser";
nenad 0:75fa10a22545 194 //data.password.cstring = "testpassword";
nenad 0:75fa10a22545 195 if ((rc = client.connect(data)) != 0)
nenad 1:276a09a95334 196 printf("rc from MQTT connect is %d\r\n", rc);
nenad 0:75fa10a22545 197
nenad 0:75fa10a22545 198 if ((rc = client.subscribe(topic_sub, MQTT::QOS2, messageArrived)) != 0)
nenad 1:276a09a95334 199 printf("rc from MQTT subscribe is %d\r\n", rc);
nenad 0:75fa10a22545 200
nenad 0:75fa10a22545 201 while (true) {
nenad 4:c737f3d85a19 202 t_sensor->get_temperature(&temperature);
nenad 4:c737f3d85a19 203 printf("Temp[C]: %7s C\r\n", print_double(buffer, temperature));
nenad 0:75fa10a22545 204 led = !led;
nenad 0:75fa10a22545 205 thread_sleep_for(BLINKING_RATE_MS);
nenad 0:75fa10a22545 206 if (button_pressed==1) {
nenad 0:75fa10a22545 207 button_pressed=0;
nenad 4:c737f3d85a19 208 printf("Publishing data\r\n");
nenad 0:75fa10a22545 209 // QoS 0
nenad 0:75fa10a22545 210 char buf[100];
nenad 4:c737f3d85a19 211 sprintf(buf, "Temp[C]: %7s C\r\n", print_double(buffer, temperature));
nenad 0:75fa10a22545 212 message.qos = MQTT::QOS0;
nenad 0:75fa10a22545 213 message.retained = false;
nenad 0:75fa10a22545 214 message.dup = false;
nenad 0:75fa10a22545 215 message.payload = (void*)buf;
nenad 0:75fa10a22545 216 message.payloadlen = strlen(buf)+1;
nenad 4:c737f3d85a19 217 client.publish(topic_pub, message);
nenad 0:75fa10a22545 218 }
nenad 4:c737f3d85a19 219 printf("Yielding");
nenad 0:75fa10a22545 220 client.yield(1000);
nenad 4:c737f3d85a19 221 printf(" -> Yielded\r\n");
nenad 0:75fa10a22545 222
nenad 0:75fa10a22545 223 }
nenad 0:75fa10a22545 224 }
nenad 4:c737f3d85a19 225
nenad 4:c737f3d85a19 226 void INT_cb()
nenad 4:c737f3d85a19 227 {
nenad 4:c737f3d85a19 228 mems_event = 1;
nenad 4:c737f3d85a19 229 }