Guilherme Lubk / Mbed OS fire_detector_IoT_v3

Fire Detector IoT

Dependencies:   BSP_B-L475E-IOT01

main.cpp@0:e84b46bbec77, 2020-10-13 (annotated)

Committer:
GuilhermeLubk
Date:
Tue Oct 13 12:24:59 2020 +0000
Revision:
0:e84b46bbec77
Child:
1:2c451ce6086b
Fire Detector Program IoT - CentraleSupelec

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GuilhermeLubk 0:e84b46bbec77 1 /* WiFi Example
GuilhermeLubk 0:e84b46bbec77 2 * Copyright (c) 2018 ARM Limited
GuilhermeLubk 0:e84b46bbec77 3 *
GuilhermeLubk 0:e84b46bbec77 4 * Licensed under the Apache License, Version 2.0 (the "License");
GuilhermeLubk 0:e84b46bbec77 5 * you may not use this file except in compliance with the License.
GuilhermeLubk 0:e84b46bbec77 6 * You may obtain a copy of the License at
GuilhermeLubk 0:e84b46bbec77 7 *
GuilhermeLubk 0:e84b46bbec77 8 * http://www.apache.org/licenses/LICENSE-2.0
GuilhermeLubk 0:e84b46bbec77 9 *
GuilhermeLubk 0:e84b46bbec77 10 * Unless required by applicable law or agreed to in writing, software
GuilhermeLubk 0:e84b46bbec77 11 * distributed under the License is distributed on an "AS IS" BASIS,
GuilhermeLubk 0:e84b46bbec77 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
GuilhermeLubk 0:e84b46bbec77 13 * See the License for the specific language governing permissions and
GuilhermeLubk 0:e84b46bbec77 14 * limitations under the License.
GuilhermeLubk 0:e84b46bbec77 15 */
GuilhermeLubk 0:e84b46bbec77 16
GuilhermeLubk 0:e84b46bbec77 17 #include "mbed.h"
GuilhermeLubk 0:e84b46bbec77 18 #include "TCPSocket.h"
GuilhermeLubk 0:e84b46bbec77 19 #include "stm32l475e_iot01_tsensor.h"
GuilhermeLubk 0:e84b46bbec77 20
GuilhermeLubk 0:e84b46bbec77 21 #define FIRE_DETECTED (1UL << 0)
GuilhermeLubk 0:e84b46bbec77 22
GuilhermeLubk 0:e84b46bbec77 23 #define WIFI_IDW0XX1 2
GuilhermeLubk 0:e84b46bbec77 24 #define TS_DEVICE "stmWifi"
GuilhermeLubk 0:e84b46bbec77 25 #define thingspeak_APIkey_write "SCS2JFDTW4EZC0NP"
GuilhermeLubk 0:e84b46bbec77 26 #define thingspeak_APIkey_read "O3ZVNRCX5J95EB4G"
GuilhermeLubk 0:e84b46bbec77 27
GuilhermeLubk 0:e84b46bbec77 28 #if (defined(TARGET_DISCO_L475VG_IOT01A) || defined(TARGET_DISCO_F413ZH))
GuilhermeLubk 0:e84b46bbec77 29 #include "ISM43362Interface.h"
GuilhermeLubk 0:e84b46bbec77 30 ISM43362Interface wifi(MBED_CONF_APP_WIFI_SPI_MOSI, MBED_CONF_APP_WIFI_SPI_MISO, MBED_CONF_APP_WIFI_SPI_SCLK, MBED_CONF_APP_WIFI_SPI_NSS, MBED_CONF_APP_WIFI_RESET, MBED_CONF_APP_WIFI_DATAREADY, MBED_CONF_APP_WIFI_WAKEUP, false);
GuilhermeLubk 0:e84b46bbec77 31
GuilhermeLubk 0:e84b46bbec77 32 #else // External WiFi modules
GuilhermeLubk 0:e84b46bbec77 33 #if MBED_CONF_APP_WIFI_SHIELD == WIFI_IDW0XX1
GuilhermeLubk 0:e84b46bbec77 34 #include "SpwfSAInterface.h"
GuilhermeLubk 0:e84b46bbec77 35 SpwfSAInterface wifi(MBED_CONF_APP_WIFI_TX, MBED_CONF_APP_WIFI_RX);
GuilhermeLubk 0:e84b46bbec77 36 #endif // MBED_CONF_APP_WIFI_SHIELD == WIFI_IDW0XX1
GuilhermeLubk 0:e84b46bbec77 37 #endif
GuilhermeLubk 0:e84b46bbec77 38
GuilhermeLubk 0:e84b46bbec77 39 //LEDS used for debugging
GuilhermeLubk 0:e84b46bbec77 40 DigitalOut led1(LED1, 1);
GuilhermeLubk 0:e84b46bbec77 41 DigitalOut led2(LED2, 1);
GuilhermeLubk 0:e84b46bbec77 42
GuilhermeLubk 0:e84b46bbec77 43 //Interruptions
GuilhermeLubk 0:e84b46bbec77 44 InterruptIn button(D3);
GuilhermeLubk 0:e84b46bbec77 45 InterruptIn IR(D7);
GuilhermeLubk 0:e84b46bbec77 46
GuilhermeLubk 0:e84b46bbec77 47 //Thread
GuilhermeLubk 0:e84b46bbec77 48 Thread thread;
GuilhermeLubk 0:e84b46bbec77 49
GuilhermeLubk 0:e84b46bbec77 50 //Event flag to control thread start
GuilhermeLubk 0:e84b46bbec77 51 EventFlags event_flags;
GuilhermeLubk 0:e84b46bbec77 52
GuilhermeLubk 0:e84b46bbec77 53
GuilhermeLubk 0:e84b46bbec77 54
GuilhermeLubk 0:e84b46bbec77 55 void button_ISP()
GuilhermeLubk 0:e84b46bbec77 56 {
GuilhermeLubk 0:e84b46bbec77 57 led1 = 0;
GuilhermeLubk 0:e84b46bbec77 58 NVIC_SystemReset();
GuilhermeLubk 0:e84b46bbec77 59 }
GuilhermeLubk 0:e84b46bbec77 60
GuilhermeLubk 0:e84b46bbec77 61 void IR_ISP()
GuilhermeLubk 0:e84b46bbec77 62 {
GuilhermeLubk 0:e84b46bbec77 63 led1 = 1;
GuilhermeLubk 0:e84b46bbec77 64 event_flags.set(FIRE_DETECTED);
GuilhermeLubk 0:e84b46bbec77 65 IR.rise(NULL);
GuilhermeLubk 0:e84b46bbec77 66 }
GuilhermeLubk 0:e84b46bbec77 67
GuilhermeLubk 0:e84b46bbec77 68 const char *sec2str(nsapi_security_t sec)
GuilhermeLubk 0:e84b46bbec77 69 {
GuilhermeLubk 0:e84b46bbec77 70 switch (sec) {
GuilhermeLubk 0:e84b46bbec77 71 case NSAPI_SECURITY_NONE:
GuilhermeLubk 0:e84b46bbec77 72 return "None";
GuilhermeLubk 0:e84b46bbec77 73 case NSAPI_SECURITY_WEP:
GuilhermeLubk 0:e84b46bbec77 74 return "WEP";
GuilhermeLubk 0:e84b46bbec77 75 case NSAPI_SECURITY_WPA:
GuilhermeLubk 0:e84b46bbec77 76 return "WPA";
GuilhermeLubk 0:e84b46bbec77 77 case NSAPI_SECURITY_WPA2:
GuilhermeLubk 0:e84b46bbec77 78 return "WPA2";
GuilhermeLubk 0:e84b46bbec77 79 case NSAPI_SECURITY_WPA_WPA2:
GuilhermeLubk 0:e84b46bbec77 80 return "WPA/WPA2";
GuilhermeLubk 0:e84b46bbec77 81 case NSAPI_SECURITY_UNKNOWN:
GuilhermeLubk 0:e84b46bbec77 82 default:
GuilhermeLubk 0:e84b46bbec77 83 return "Unknown";
GuilhermeLubk 0:e84b46bbec77 84 }
GuilhermeLubk 0:e84b46bbec77 85 }
GuilhermeLubk 0:e84b46bbec77 86
GuilhermeLubk 0:e84b46bbec77 87 void main_routine()
GuilhermeLubk 0:e84b46bbec77 88 {
GuilhermeLubk 0:e84b46bbec77 89 //Temperature reading
GuilhermeLubk 0:e84b46bbec77 90 BSP_TSENSOR_Init();
GuilhermeLubk 0:e84b46bbec77 91 float temperature_value = 0;
GuilhermeLubk 0:e84b46bbec77 92
GuilhermeLubk 0:e84b46bbec77 93 //Check fire variable
GuilhermeLubk 0:e84b46bbec77 94 int numReadings = 0;
GuilhermeLubk 0:e84b46bbec77 95
GuilhermeLubk 0:e84b46bbec77 96 while(true) {
GuilhermeLubk 0:e84b46bbec77 97 //wait for a fire reading
GuilhermeLubk 0:e84b46bbec77 98 event_flags.wait_any(FIRE_DETECTED);
GuilhermeLubk 0:e84b46bbec77 99
GuilhermeLubk 0:e84b46bbec77 100 //check against false readings
GuilhermeLubk 0:e84b46bbec77 101 for(int n = 0; n < 5; n++) {
GuilhermeLubk 0:e84b46bbec77 102 numReadings += IR.read();
GuilhermeLubk 0:e84b46bbec77 103 led1 = !led1;
GuilhermeLubk 0:e84b46bbec77 104 wait(0.2);
GuilhermeLubk 0:e84b46bbec77 105 }
GuilhermeLubk 0:e84b46bbec77 106
GuilhermeLubk 0:e84b46bbec77 107 printf("\nNum of positive readings: %d\n\r", numReadings);
GuilhermeLubk 0:e84b46bbec77 108
GuilhermeLubk 0:e84b46bbec77 109 if(numReadings >= 5) {
GuilhermeLubk 0:e84b46bbec77 110 printf("\nFIRE DETECTED - SENDING DATA\n\r");
GuilhermeLubk 0:e84b46bbec77 111 IR.rise(NULL);
GuilhermeLubk 0:e84b46bbec77 112 led1 = 1;
GuilhermeLubk 0:e84b46bbec77 113 led2 = 1;
GuilhermeLubk 0:e84b46bbec77 114
GuilhermeLubk 0:e84b46bbec77 115 //Connect to ThingSpeak and starting sending data
GuilhermeLubk 0:e84b46bbec77 116 int ret = 1;
GuilhermeLubk 0:e84b46bbec77 117 do {
GuilhermeLubk 0:e84b46bbec77 118 printf("\nConnecting to %s...\n", MBED_CONF_APP_WIFI_SSID);
GuilhermeLubk 0:e84b46bbec77 119 ret = wifi.connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, NSAPI_SECURITY_WPA_WPA2);
GuilhermeLubk 0:e84b46bbec77 120 } while(ret != 0);
GuilhermeLubk 0:e84b46bbec77 121
GuilhermeLubk 0:e84b46bbec77 122 printf("Success\n\n");
GuilhermeLubk 0:e84b46bbec77 123 printf("MAC: %s\n", wifi.get_mac_address());
GuilhermeLubk 0:e84b46bbec77 124 printf("IP: %s\n", wifi.get_ip_address());
GuilhermeLubk 0:e84b46bbec77 125 printf("Netmask: %s\n", wifi.get_netmask());
GuilhermeLubk 0:e84b46bbec77 126 printf("Gateway: %s\n", wifi.get_gateway());
GuilhermeLubk 0:e84b46bbec77 127 printf("RSSI: %d\n\n", wifi.get_rssi());
GuilhermeLubk 0:e84b46bbec77 128
GuilhermeLubk 0:e84b46bbec77 129 NetworkInterface *net = &wifi;
GuilhermeLubk 0:e84b46bbec77 130
GuilhermeLubk 0:e84b46bbec77 131 TCPSocket socket;
GuilhermeLubk 0:e84b46bbec77 132 nsapi_error_t response;
GuilhermeLubk 0:e84b46bbec77 133 char sbuffer[256];
GuilhermeLubk 0:e84b46bbec77 134 char message[64];
GuilhermeLubk 0:e84b46bbec77 135
GuilhermeLubk 0:e84b46bbec77 136 while(true) {
GuilhermeLubk 0:e84b46bbec77 137
GuilhermeLubk 0:e84b46bbec77 138 // Open a socket on the network interface, and create a TCP connection to thingspeaks.com
GuilhermeLubk 0:e84b46bbec77 139 socket.open(net);
GuilhermeLubk 0:e84b46bbec77 140 response = socket.connect("api.thingspeak.com", 80);
GuilhermeLubk 0:e84b46bbec77 141 if(0 != response) {
GuilhermeLubk 0:e84b46bbec77 142 printf("Error connecting: %d\n", response);
GuilhermeLubk 0:e84b46bbec77 143 socket.close();
GuilhermeLubk 0:e84b46bbec77 144 return;
GuilhermeLubk 0:e84b46bbec77 145 }
GuilhermeLubk 0:e84b46bbec77 146
GuilhermeLubk 0:e84b46bbec77 147 printf("Connected to the Server\n");
GuilhermeLubk 0:e84b46bbec77 148
GuilhermeLubk 0:e84b46bbec77 149 //lecture des données des capteurs et actualisation des variables à transmettre
GuilhermeLubk 0:e84b46bbec77 150 temperature_value = BSP_TSENSOR_ReadTemp() - 8;
GuilhermeLubk 0:e84b46bbec77 151 led1 = !led1;
GuilhermeLubk 0:e84b46bbec77 152
GuilhermeLubk 0:e84b46bbec77 153
GuilhermeLubk 0:e84b46bbec77 154 /* Construct content of HTTP command */
GuilhermeLubk 0:e84b46bbec77 155 //message à transmettre (données des capteurs)
GuilhermeLubk 0:e84b46bbec77 156 sprintf(message, "{\"field1\": %0.2f}", temperature_value);
GuilhermeLubk 0:e84b46bbec77 157 printf("Content Length = %d\r\n", (int)strlen(message));
GuilhermeLubk 0:e84b46bbec77 158
GuilhermeLubk 0:e84b46bbec77 159 /* Construct HTTP command to send */
GuilhermeLubk 0:e84b46bbec77 160 // Phase de transmission des données à ThingSpeaks.com
GuilhermeLubk 0:e84b46bbec77 161 sprintf(sbuffer, "GET /update?api_key=%s HTTP/1.1\r\nHost: api.thingspeak.com\r\nContent-Type: application/json\r\nContent-Length: %d\r\n\r\n%s", thingspeak_APIkey_write,
GuilhermeLubk 0:e84b46bbec77 162 (int)strlen(message),message);
GuilhermeLubk 0:e84b46bbec77 163 printf("HTTP command %s\r\n", sbuffer);
GuilhermeLubk 0:e84b46bbec77 164 wait(1.0); // temporisation avant la nouvelle transmission
GuilhermeLubk 0:e84b46bbec77 165
GuilhermeLubk 0:e84b46bbec77 166 // Send a simple http request
GuilhermeLubk 0:e84b46bbec77 167 printf("Sending HTTP request to thingspeak.com...\n");//
GuilhermeLubk 0:e84b46bbec77 168 nsapi_size_t size = strlen(sbuffer);
GuilhermeLubk 0:e84b46bbec77 169 response = 0;
GuilhermeLubk 0:e84b46bbec77 170 while(size) {
GuilhermeLubk 0:e84b46bbec77 171 response = socket.send(sbuffer+response, size);
GuilhermeLubk 0:e84b46bbec77 172 if (response < 0) {
GuilhermeLubk 0:e84b46bbec77 173 printf("Error sending data: %d\n", response);
GuilhermeLubk 0:e84b46bbec77 174 socket.close();
GuilhermeLubk 0:e84b46bbec77 175 return;
GuilhermeLubk 0:e84b46bbec77 176 } else {
GuilhermeLubk 0:e84b46bbec77 177 size -= response;
GuilhermeLubk 0:e84b46bbec77 178 // Check if entire message was sent or not
GuilhermeLubk 0:e84b46bbec77 179 printf("sent %d [%.*s]\n", response, strstr(sbuffer, "\r\n")-sbuffer, sbuffer);
GuilhermeLubk 0:e84b46bbec77 180 }
GuilhermeLubk 0:e84b46bbec77 181 }
GuilhermeLubk 0:e84b46bbec77 182
GuilhermeLubk 0:e84b46bbec77 183 // Receive a simple http response and print out the response line
GuilhermeLubk 0:e84b46bbec77 184 char rbuffer[64];
GuilhermeLubk 0:e84b46bbec77 185 response = socket.recv(rbuffer, sizeof rbuffer);
GuilhermeLubk 0:e84b46bbec77 186 if (response < 0) {
GuilhermeLubk 0:e84b46bbec77 187 printf("Error receiving data: %d\n", response);
GuilhermeLubk 0:e84b46bbec77 188 } else {
GuilhermeLubk 0:e84b46bbec77 189 printf("recv %d [%.*s]\n", response, strstr(rbuffer, "\r\n")-rbuffer, rbuffer);
GuilhermeLubk 0:e84b46bbec77 190 }
GuilhermeLubk 0:e84b46bbec77 191 // Close the socket to return its memory and bring down the network interface
GuilhermeLubk 0:e84b46bbec77 192 socket.close();
GuilhermeLubk 0:e84b46bbec77 193 }
GuilhermeLubk 0:e84b46bbec77 194
GuilhermeLubk 0:e84b46bbec77 195
GuilhermeLubk 0:e84b46bbec77 196 } else {
GuilhermeLubk 0:e84b46bbec77 197 numReadings = 0;
GuilhermeLubk 0:e84b46bbec77 198 if(IR.read() == 0) {
GuilhermeLubk 0:e84b46bbec77 199 event_flags.set(0);
GuilhermeLubk 0:e84b46bbec77 200 IR.rise(&IR_ISP);
GuilhermeLubk 0:e84b46bbec77 201 printf("\nNo fire detected, returning IDLE\n\r");
GuilhermeLubk 0:e84b46bbec77 202 } else {
GuilhermeLubk 0:e84b46bbec77 203 event_flags.set(FIRE_DETECTED);
GuilhermeLubk 0:e84b46bbec77 204 printf("\nSensor still high, re-checking\n\r");
GuilhermeLubk 0:e84b46bbec77 205 }
GuilhermeLubk 0:e84b46bbec77 206 }
GuilhermeLubk 0:e84b46bbec77 207
GuilhermeLubk 0:e84b46bbec77 208
GuilhermeLubk 0:e84b46bbec77 209 }
GuilhermeLubk 0:e84b46bbec77 210 }
GuilhermeLubk 0:e84b46bbec77 211
GuilhermeLubk 0:e84b46bbec77 212
GuilhermeLubk 0:e84b46bbec77 213
GuilhermeLubk 0:e84b46bbec77 214 int main()
GuilhermeLubk 0:e84b46bbec77 215 {
GuilhermeLubk 0:e84b46bbec77 216
GuilhermeLubk 0:e84b46bbec77 217 led1 = 0;
GuilhermeLubk 0:e84b46bbec77 218 led2 = 0;
GuilhermeLubk 0:e84b46bbec77 219 thread.start(mbed::callback(main_routine));
GuilhermeLubk 0:e84b46bbec77 220 button.fall(&button_ISP);
GuilhermeLubk 0:e84b46bbec77 221 IR.rise(&IR_ISP);
GuilhermeLubk 0:e84b46bbec77 222 //main function will sleep
GuilhermeLubk 0:e84b46bbec77 223 while(true) {
GuilhermeLubk 0:e84b46bbec77 224 wait(1);
GuilhermeLubk 0:e84b46bbec77 225 }
GuilhermeLubk 0:e84b46bbec77 226
GuilhermeLubk 0:e84b46bbec77 227 }