Akash Gaikwad
/
Hexiware_WiFi_ESP8266_and_sensor_code
Hexiware_WiFi_ESP8266_and_sensor_code
main.cpp@0:5fcbe9cb4f5b, 2017-03-22 (annotated)
- Committer:
- agaikwad
- Date:
- Wed Mar 22 01:15:16 2017 +0000
- Revision:
- 0:5fcbe9cb4f5b
Hexiware_WiFi_ESP8266_and_sensor_code
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
agaikwad | 0:5fcbe9cb4f5b | 1 | |
agaikwad | 0:5fcbe9cb4f5b | 2 | #include "mbed.h" |
agaikwad | 0:5fcbe9cb4f5b | 3 | #include "ESP8266.h" // Include header file from Author: Antonio Quevedo |
agaikwad | 0:5fcbe9cb4f5b | 4 | #include "math.h" |
agaikwad | 0:5fcbe9cb4f5b | 5 | #include <string> |
agaikwad | 0:5fcbe9cb4f5b | 6 | |
agaikwad | 0:5fcbe9cb4f5b | 7 | #define APIKEY 45IE5JPN8ZIK2W2M //Put "Write key" of your channel in thingspeak.com |
agaikwad | 0:5fcbe9cb4f5b | 8 | #define IP "184.106.153.149" // IP Address of "api.thingspeak.com\" |
agaikwad | 0:5fcbe9cb4f5b | 9 | #define WIFI_SSID "Redmi" |
agaikwad | 0:5fcbe9cb4f5b | 10 | #define WIFI_PASS "akash12345" |
agaikwad | 0:5fcbe9cb4f5b | 11 | |
agaikwad | 0:5fcbe9cb4f5b | 12 | Serial pc(USBTX,USBRX); |
agaikwad | 0:5fcbe9cb4f5b | 13 | SPI spi(PTC6,PTC7,PTC5); // (MOSI MISO CLK)setup SPI interface on pins PTC5,PTC6,PTC7 |
agaikwad | 0:5fcbe9cb4f5b | 14 | ESP8266 esp(PTC17, PTC16, 115200); // baud rate for wifi |
agaikwad | 0:5fcbe9cb4f5b | 15 | |
agaikwad | 0:5fcbe9cb4f5b | 16 | DigitalOut cs1(PTC4); |
agaikwad | 0:5fcbe9cb4f5b | 17 | DigitalOut cs2(PTC3); |
agaikwad | 0:5fcbe9cb4f5b | 18 | I2C i2c(PTD9,PTD8); |
agaikwad | 0:5fcbe9cb4f5b | 19 | |
agaikwad | 0:5fcbe9cb4f5b | 20 | //AnalogIn check(PTB6); |
agaikwad | 0:5fcbe9cb4f5b | 21 | const int addr = 0x88; |
agaikwad | 0:5fcbe9cb4f5b | 22 | |
agaikwad | 0:5fcbe9cb4f5b | 23 | char snd[255],rcv[1000],snd_Data[255]; //snd= string used to send command to ESP 8266 wii and rcv = string used to receive response from ESP8266 wifi module |
agaikwad | 0:5fcbe9cb4f5b | 24 | |
agaikwad | 0:5fcbe9cb4f5b | 25 | int cnt = 0; // counter for number of motion detected |
agaikwad | 0:5fcbe9cb4f5b | 26 | int cnt1 = 0; // counter for number of motion detected |
agaikwad | 0:5fcbe9cb4f5b | 27 | int cnt2 = 0; // counter for number of motion detected |
agaikwad | 0:5fcbe9cb4f5b | 28 | |
agaikwad | 0:5fcbe9cb4f5b | 29 | float ammeter_out = 0; |
agaikwad | 0:5fcbe9cb4f5b | 30 | float voltmeter_out = 0; |
agaikwad | 0:5fcbe9cb4f5b | 31 | float light_out = 0; |
agaikwad | 0:5fcbe9cb4f5b | 32 | |
agaikwad | 0:5fcbe9cb4f5b | 33 | void esp_initialize(void); // Function used to initialize ESP8266 wifi module |
agaikwad | 0:5fcbe9cb4f5b | 34 | void esp_send(void); // Function used to connect with thingspeak.com and update channel using ESP8266 wifi module |
agaikwad | 0:5fcbe9cb4f5b | 35 | |
agaikwad | 0:5fcbe9cb4f5b | 36 | int main() |
agaikwad | 0:5fcbe9cb4f5b | 37 | { |
agaikwad | 0:5fcbe9cb4f5b | 38 | |
agaikwad | 0:5fcbe9cb4f5b | 39 | pc.baud(115200); // Baud rate used for communicating with Tera-term on PC |
agaikwad | 0:5fcbe9cb4f5b | 40 | |
agaikwad | 0:5fcbe9cb4f5b | 41 | pc.printf("START\r\n"); // Starting point |
agaikwad | 0:5fcbe9cb4f5b | 42 | |
agaikwad | 0:5fcbe9cb4f5b | 43 | esp_initialize(); |
agaikwad | 0:5fcbe9cb4f5b | 44 | |
agaikwad | 0:5fcbe9cb4f5b | 45 | //ammeter + voltmeter code |
agaikwad | 0:5fcbe9cb4f5b | 46 | spi.format(8,0); |
agaikwad | 0:5fcbe9cb4f5b | 47 | spi.frequency(1000000); |
agaikwad | 0:5fcbe9cb4f5b | 48 | pc.printf("Analog read test from spi.\n"); |
agaikwad | 0:5fcbe9cb4f5b | 49 | pc.printf("\n\r"); |
agaikwad | 0:5fcbe9cb4f5b | 50 | |
agaikwad | 0:5fcbe9cb4f5b | 51 | //light code |
agaikwad | 0:5fcbe9cb4f5b | 52 | int exp,exp1,l=1; |
agaikwad | 0:5fcbe9cb4f5b | 53 | i2c.frequency(100000); // set required i2c frequency |
agaikwad | 0:5fcbe9cb4f5b | 54 | //pc.baud(9600); //set baud rate |
agaikwad | 0:5fcbe9cb4f5b | 55 | pc.printf("I2C started!\r\n"); |
agaikwad | 0:5fcbe9cb4f5b | 56 | pc.printf("\n\r"); |
agaikwad | 0:5fcbe9cb4f5b | 57 | char cmd[3]; //for byte transfer |
agaikwad | 0:5fcbe9cb4f5b | 58 | |
agaikwad | 0:5fcbe9cb4f5b | 59 | while (1) |
agaikwad | 0:5fcbe9cb4f5b | 60 | { |
agaikwad | 0:5fcbe9cb4f5b | 61 | wait(15); |
agaikwad | 0:5fcbe9cb4f5b | 62 | //ammeter code |
agaikwad | 0:5fcbe9cb4f5b | 63 | |
agaikwad | 0:5fcbe9cb4f5b | 64 | cs1=0; |
agaikwad | 0:5fcbe9cb4f5b | 65 | //spi.write(); |
agaikwad | 0:5fcbe9cb4f5b | 66 | //pc.printf("%d\r\n",k); |
agaikwad | 0:5fcbe9cb4f5b | 67 | int high_byte = spi.write(0); |
agaikwad | 0:5fcbe9cb4f5b | 68 | int low_byte = spi.write(0); |
agaikwad | 0:5fcbe9cb4f5b | 69 | cs1=1; |
agaikwad | 0:5fcbe9cb4f5b | 70 | float m = ((high_byte & 0x1f) << 7) | ((low_byte >> 1)); |
agaikwad | 0:5fcbe9cb4f5b | 71 | float k= (float)((m*1)/4096); // show value in volts. |
agaikwad | 0:5fcbe9cb4f5b | 72 | ammeter_out = (float)((k-0.5)*1000); |
agaikwad | 0:5fcbe9cb4f5b | 73 | pc.printf("Current value: %f mA\r\n", ammeter_out); |
agaikwad | 0:5fcbe9cb4f5b | 74 | //pc.printf("Analog Value of current : %.2f\n\r",m); |
agaikwad | 0:5fcbe9cb4f5b | 75 | wait_ms(100); |
agaikwad | 0:5fcbe9cb4f5b | 76 | |
agaikwad | 0:5fcbe9cb4f5b | 77 | cs2=0; |
agaikwad | 0:5fcbe9cb4f5b | 78 | //spi.write(); |
agaikwad | 0:5fcbe9cb4f5b | 79 | //pc.printf("%d\r\n",k); |
agaikwad | 0:5fcbe9cb4f5b | 80 | int hi_byte = spi.write(0); |
agaikwad | 0:5fcbe9cb4f5b | 81 | int lo_byte = spi.write(0); |
agaikwad | 0:5fcbe9cb4f5b | 82 | cs2=1; |
agaikwad | 0:5fcbe9cb4f5b | 83 | float x = ((hi_byte & 0x1f) << 7) | ((lo_byte >> 1)); |
agaikwad | 0:5fcbe9cb4f5b | 84 | |
agaikwad | 0:5fcbe9cb4f5b | 85 | float r= (float)((x*33)/4096); // show value in volts. |
agaikwad | 0:5fcbe9cb4f5b | 86 | voltmeter_out = (float)(r-16.5); |
agaikwad | 0:5fcbe9cb4f5b | 87 | pc.printf("AD Voltage channel value: %f V\r\n", voltmeter_out); |
agaikwad | 0:5fcbe9cb4f5b | 88 | //pc.printf("Voltage Analog Value: %.2f\n\r",x); |
agaikwad | 0:5fcbe9cb4f5b | 89 | wait_ms(100); |
agaikwad | 0:5fcbe9cb4f5b | 90 | |
agaikwad | 0:5fcbe9cb4f5b | 91 | //ambient light sensor code |
agaikwad | 0:5fcbe9cb4f5b | 92 | |
agaikwad | 0:5fcbe9cb4f5b | 93 | cmd[0] = 0x01; //configuration register |
agaikwad | 0:5fcbe9cb4f5b | 94 | cmd[1]= 0xCC; //configuration data |
agaikwad | 0:5fcbe9cb4f5b | 95 | cmd[2]= 0x01; //configuration data |
agaikwad | 0:5fcbe9cb4f5b | 96 | i2c.write(addr, cmd, 3); |
agaikwad | 0:5fcbe9cb4f5b | 97 | cmd[0] = 0x00; // data register |
agaikwad | 0:5fcbe9cb4f5b | 98 | i2c.write(addr, cmd, 1); |
agaikwad | 0:5fcbe9cb4f5b | 99 | wait_ms(100); |
agaikwad | 0:5fcbe9cb4f5b | 100 | i2c.read(addr, cmd, 2); |
agaikwad | 0:5fcbe9cb4f5b | 101 | |
agaikwad | 0:5fcbe9cb4f5b | 102 | exp= cmd[0]>>4; |
agaikwad | 0:5fcbe9cb4f5b | 103 | exp1= (cmd[0]-(exp<<4))*256+cmd[1]; |
agaikwad | 0:5fcbe9cb4f5b | 104 | // pc.printf("exponent = 0x%x\n\r", exp); |
agaikwad | 0:5fcbe9cb4f5b | 105 | // pc.printf("fraction = %d\n\r", exp1); |
agaikwad | 0:5fcbe9cb4f5b | 106 | l=1; |
agaikwad | 0:5fcbe9cb4f5b | 107 | for(int r=0;r<exp;r++){l=l*2;}; |
agaikwad | 0:5fcbe9cb4f5b | 108 | // pc.printf("value = %d\n\r", l); |
agaikwad | 0:5fcbe9cb4f5b | 109 | light_out= (exp1*l)/100; |
agaikwad | 0:5fcbe9cb4f5b | 110 | pc.printf("Lux = %.2f\n\r", light_out); // printing LUX value |
agaikwad | 0:5fcbe9cb4f5b | 111 | pc.printf("\n\r"); |
agaikwad | 0:5fcbe9cb4f5b | 112 | wait_ms(100); |
agaikwad | 0:5fcbe9cb4f5b | 113 | |
agaikwad | 0:5fcbe9cb4f5b | 114 | pc.printf("Sending this information to thingspeak.com = %d\r\n",cnt); |
agaikwad | 0:5fcbe9cb4f5b | 115 | esp_send(); |
agaikwad | 0:5fcbe9cb4f5b | 116 | |
agaikwad | 0:5fcbe9cb4f5b | 117 | } |
agaikwad | 0:5fcbe9cb4f5b | 118 | } |
agaikwad | 0:5fcbe9cb4f5b | 119 | |
agaikwad | 0:5fcbe9cb4f5b | 120 | |
agaikwad | 0:5fcbe9cb4f5b | 121 | void esp_initialize(void) |
agaikwad | 0:5fcbe9cb4f5b | 122 | { |
agaikwad | 0:5fcbe9cb4f5b | 123 | pc.printf("Initializing ESP\r\n"); |
agaikwad | 0:5fcbe9cb4f5b | 124 | |
agaikwad | 0:5fcbe9cb4f5b | 125 | pc.printf("Reset ESP\r\n"); |
agaikwad | 0:5fcbe9cb4f5b | 126 | esp.Reset(); //RESET ESP |
agaikwad | 0:5fcbe9cb4f5b | 127 | esp.RcvReply(rcv, 400); //receive a response from ESP |
agaikwad | 0:5fcbe9cb4f5b | 128 | //pc.printf(rcv); //Print the response onscreen |
agaikwad | 0:5fcbe9cb4f5b | 129 | wait(2); |
agaikwad | 0:5fcbe9cb4f5b | 130 | |
agaikwad | 0:5fcbe9cb4f5b | 131 | strcpy(snd,"AT"); |
agaikwad | 0:5fcbe9cb4f5b | 132 | esp.SendCMD(snd); |
agaikwad | 0:5fcbe9cb4f5b | 133 | pc.printf(snd); |
agaikwad | 0:5fcbe9cb4f5b | 134 | //wait(2); |
agaikwad | 0:5fcbe9cb4f5b | 135 | esp.RcvReply(rcv, 400); |
agaikwad | 0:5fcbe9cb4f5b | 136 | pc.printf(rcv); |
agaikwad | 0:5fcbe9cb4f5b | 137 | wait(0.1); |
agaikwad | 0:5fcbe9cb4f5b | 138 | |
agaikwad | 0:5fcbe9cb4f5b | 139 | strcpy(snd,"AT+CWMODE=1"); |
agaikwad | 0:5fcbe9cb4f5b | 140 | esp.SendCMD(snd); |
agaikwad | 0:5fcbe9cb4f5b | 141 | pc.printf(snd); |
agaikwad | 0:5fcbe9cb4f5b | 142 | wait(2); |
agaikwad | 0:5fcbe9cb4f5b | 143 | |
agaikwad | 0:5fcbe9cb4f5b | 144 | strcpy(snd,"AT+CWJAP=\""); |
agaikwad | 0:5fcbe9cb4f5b | 145 | strcat(snd,WIFI_SSID); |
agaikwad | 0:5fcbe9cb4f5b | 146 | strcat(snd,"\",\""); |
agaikwad | 0:5fcbe9cb4f5b | 147 | strcat(snd,WIFI_PASS); |
agaikwad | 0:5fcbe9cb4f5b | 148 | strcat(snd,"\""); |
agaikwad | 0:5fcbe9cb4f5b | 149 | |
agaikwad | 0:5fcbe9cb4f5b | 150 | esp.SendCMD(snd); |
agaikwad | 0:5fcbe9cb4f5b | 151 | pc.printf(snd); |
agaikwad | 0:5fcbe9cb4f5b | 152 | wait(5); |
agaikwad | 0:5fcbe9cb4f5b | 153 | esp.RcvReply(rcv, 400); |
agaikwad | 0:5fcbe9cb4f5b | 154 | pc.printf("\n %s \n", rcv); |
agaikwad | 0:5fcbe9cb4f5b | 155 | |
agaikwad | 0:5fcbe9cb4f5b | 156 | strcpy(snd,"AT+CIPMUX=0"); |
agaikwad | 0:5fcbe9cb4f5b | 157 | esp.SendCMD(snd); |
agaikwad | 0:5fcbe9cb4f5b | 158 | pc.printf(snd); |
agaikwad | 0:5fcbe9cb4f5b | 159 | //wait(2); |
agaikwad | 0:5fcbe9cb4f5b | 160 | esp.RcvReply(rcv, 400); |
agaikwad | 0:5fcbe9cb4f5b | 161 | pc.printf("\n %s \n", rcv); |
agaikwad | 0:5fcbe9cb4f5b | 162 | |
agaikwad | 0:5fcbe9cb4f5b | 163 | } |
agaikwad | 0:5fcbe9cb4f5b | 164 | |
agaikwad | 0:5fcbe9cb4f5b | 165 | |
agaikwad | 0:5fcbe9cb4f5b | 166 | void esp_send(void) |
agaikwad | 0:5fcbe9cb4f5b | 167 | { |
agaikwad | 0:5fcbe9cb4f5b | 168 | |
agaikwad | 0:5fcbe9cb4f5b | 169 | //ESP updates the Status of Thingspeak channel// |
agaikwad | 0:5fcbe9cb4f5b | 170 | |
agaikwad | 0:5fcbe9cb4f5b | 171 | strcpy(snd,"AT+CIPSTART="); |
agaikwad | 0:5fcbe9cb4f5b | 172 | strcat(snd,"\"TCP\",\""); |
agaikwad | 0:5fcbe9cb4f5b | 173 | strcat(snd,IP); |
agaikwad | 0:5fcbe9cb4f5b | 174 | strcat(snd,"\",80"); |
agaikwad | 0:5fcbe9cb4f5b | 175 | |
agaikwad | 0:5fcbe9cb4f5b | 176 | esp.SendCMD(snd); |
agaikwad | 0:5fcbe9cb4f5b | 177 | pc.printf("S\r\n%s",snd); |
agaikwad | 0:5fcbe9cb4f5b | 178 | //wait(2); |
agaikwad | 0:5fcbe9cb4f5b | 179 | esp.RcvReply(rcv, 1000); |
agaikwad | 0:5fcbe9cb4f5b | 180 | pc.printf("R\r\n%s",rcv); |
agaikwad | 0:5fcbe9cb4f5b | 181 | wait(1); |
agaikwad | 0:5fcbe9cb4f5b | 182 | |
agaikwad | 0:5fcbe9cb4f5b | 183 | sprintf(snd,"GET https://api.thingspeak.com/update?key=45IE5JPN8ZIK2W2M&field1=%f&field2=%f&field3=%f\r\n",ammeter_out,voltmeter_out,light_out); |
agaikwad | 0:5fcbe9cb4f5b | 184 | |
agaikwad | 0:5fcbe9cb4f5b | 185 | int i=0; |
agaikwad | 0:5fcbe9cb4f5b | 186 | for(i=0;snd[i]!='\0';i++); |
agaikwad | 0:5fcbe9cb4f5b | 187 | i++; |
agaikwad | 0:5fcbe9cb4f5b | 188 | char cmd[255]; |
agaikwad | 0:5fcbe9cb4f5b | 189 | |
agaikwad | 0:5fcbe9cb4f5b | 190 | sprintf(cmd,"AT+CIPSEND=%d",i); //Send Number of open connection and Characters to send |
agaikwad | 0:5fcbe9cb4f5b | 191 | esp.SendCMD(cmd); |
agaikwad | 0:5fcbe9cb4f5b | 192 | pc.printf("S\r\n%s",cmd); |
agaikwad | 0:5fcbe9cb4f5b | 193 | while(i<=20 || rcv == ">") |
agaikwad | 0:5fcbe9cb4f5b | 194 | { |
agaikwad | 0:5fcbe9cb4f5b | 195 | esp.RcvReply(rcv, 1000); |
agaikwad | 0:5fcbe9cb4f5b | 196 | wait(100); |
agaikwad | 0:5fcbe9cb4f5b | 197 | i++; |
agaikwad | 0:5fcbe9cb4f5b | 198 | } |
agaikwad | 0:5fcbe9cb4f5b | 199 | pc.printf("R\r\n%s",rcv); |
agaikwad | 0:5fcbe9cb4f5b | 200 | |
agaikwad | 0:5fcbe9cb4f5b | 201 | esp.SendCMD(snd); //Post value to thingspeak channel |
agaikwad | 0:5fcbe9cb4f5b | 202 | pc.printf("S\r\n%s",snd); |
agaikwad | 0:5fcbe9cb4f5b | 203 | |
agaikwad | 0:5fcbe9cb4f5b | 204 | while(i<=20 || rcv == "OK") |
agaikwad | 0:5fcbe9cb4f5b | 205 | { |
agaikwad | 0:5fcbe9cb4f5b | 206 | esp.RcvReply(rcv, 1000); |
agaikwad | 0:5fcbe9cb4f5b | 207 | wait(100); |
agaikwad | 0:5fcbe9cb4f5b | 208 | i++; |
agaikwad | 0:5fcbe9cb4f5b | 209 | } |
agaikwad | 0:5fcbe9cb4f5b | 210 | pc.printf("R\r\n%s",rcv); |
agaikwad | 0:5fcbe9cb4f5b | 211 | |
agaikwad | 0:5fcbe9cb4f5b | 212 | } |
agaikwad | 0:5fcbe9cb4f5b | 213 |