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Temperature Sensor DHT readings to FRDMk64f
Fork of Hexi_Blinky_Example by
main.cpp
- Committer:
- roborags
- Date:
- 2017-04-05
- Revision:
- 16:39e45e59677c
- Parent:
- 15:67a7cca7ae06
- Child:
- 17:690d692b29cb
File content as of revision 16:39e45e59677c:
#include "mbed.h" #include "ESP8266.h" // Include header file from Author: Antonio Quevedo #include "math.h" #include "DHT.h" #include <string> #define APIKEY JJAOBK32WOINKT00 //Put "Write key" of your channel in thingspeak.com #define IP "184.106.153.149" // IP Address of "api.thingspeak.com\" #define WIFI_SSID "Redmi" #define WIFI_PASS "akash12345" Serial FRDM_UART_Debug(USBTX,USBRX); ESP8266 ESP_8266_UART(PTC15, PTC14, 115200); // UART for ESP8266 Wifi module // Options are TX-RX - PTB11 - PTB10 , PTC17 - PTC16 , PTC15 - PTC14 SPI SPI_Bus(PTD2,PTD3,PTD1); // (MOSI MISO CLK)setup SPI interface DigitalOut SPI_CS_AMM(PTB9); DigitalOut SPI_CS_VOLT(PTA1); I2C I2C_Bus(PTE25,PTE24); AnalogIn AN_Thermo(PTB2); // Thermocouple Analog Input DigitalIn DG_Motion(PTB3); // Motion module Digital Input DHT DHT_Temp_Hum(PTA2,DHT22); //DHT Sensor const int Light_I2C_Addr = 0x88; char ESP_8266_CMD_Send[255],ESP_8266_CMD_Recv[1000]; //ESP_8266_CMD_Send = string used to send command to ESP8266 & ESP_8266_CMD_Recv = string used to receive response from ESP8266 float Amm_Out = 0; float Volt_Out = 0; float Light_Out = 0; float Thermo_Out = 0; float Temp_Out = 0; float Hum_Out = 0; int Motion_Out = 0; int Finger_Out = 0; float Pres_Out = 0; void ESP_8266_Init(void); // Function used to initialize ESP8266 wifi module void ESP_8266_TX_Data(void); // Function used to connect with thingspeak.com and update channel using ESP8266 wifi module int main() { int SPI_High_byte = 0; int SPI_Low_byte = 0; float Temp_f_1 = 0.00; float Temp_f_2 = 0.00; int Temp_i_1 = 0; int Temp_i_2 = 0; int Temp_i_3 = 0; char I2C_Cmd[3]; int loop_count = 0; FRDM_UART_Debug.baud(115200); // Baud rate used for communicating with Tera-term on PC ESP_8266_Init(); SPI_Bus.format(8,0); SPI_Bus.frequency(1000000); I2C_Bus.frequency(100000); // set required i2c frequency FRDM_UART_Debug.printf("Start sampling data\r\n"); // Starting point wait(1); while (1) { Amm_Out = 0; Volt_Out = 0; Light_Out = 0; Thermo_Out = 0; Temp_Out = 0; Hum_Out = 0; Motion_Out = 0; // Copy Motion values Motion_Out = DG_Motion; // Ammeter SPI_High_byte = 0; SPI_Low_byte = 0; Temp_f_1 = 0.00; Temp_f_2 = 0.00; Temp_i_1 = 0; Temp_i_2 = 0; Temp_i_3 = 0; I2C_Cmd[0] = 0; I2C_Cmd[1] = 0; I2C_Cmd[2] = 0; loop_count = 0; SPI_CS_AMM = 0; SPI_High_byte = SPI_Bus.write(0); SPI_Low_byte = SPI_Bus.write(0); SPI_CS_AMM = 1; Temp_f_1 = (( SPI_High_byte & 0x1F ) << 7 ) | (( SPI_Low_byte >> 1 )); Temp_f_2= (float)(( Temp_f_1 * 1.00 ) / 4096.00 ); // Converting to volts Amm_Out = (float)(( Temp_f_2 - 0.50 ) * 1000.00); FRDM_UART_Debug.printf("Current value = %f mA\r\n", Amm_Out); wait_ms(100); // Voltmeter SPI_High_byte = 0; SPI_Low_byte = 0; Temp_f_1 = 0.00; Temp_f_2 = 0.00; Temp_i_1 = 0; Temp_i_2 = 0; Temp_i_3 = 0; I2C_Cmd[0] = 0; I2C_Cmd[1] = 0; I2C_Cmd[2] = 0; loop_count = 0; SPI_CS_VOLT = 0; SPI_High_byte = SPI_Bus.write(0); SPI_Low_byte = SPI_Bus.write(0); SPI_CS_VOLT = 1; Temp_f_1 = ((SPI_High_byte & 0x1f) << 7) | ((SPI_Low_byte >> 1)); Temp_f_2 = (float)((Temp_f_1 * 33) / 4096); // show value in volts. Volt_Out = (float)(Temp_f_2 - 16.5); FRDM_UART_Debug.printf("Voltage value = %f V\r\n", Volt_Out); wait_ms(100); //ambient light SPI_High_byte = 0; SPI_Low_byte = 0; Temp_f_1 = 0.00; Temp_f_2 = 0.00; Temp_i_1 = 0; Temp_i_2 = 0; Temp_i_3 = 0; I2C_Cmd[0] = 0; I2C_Cmd[1] = 0; I2C_Cmd[2] = 0; loop_count = 0; I2C_Cmd[0] = 0x01; //configuration register I2C_Cmd[1]= 0xCC; //configuration data I2C_Cmd[2]= 0x01; //configuration data I2C_Bus.write(Light_I2C_Addr, I2C_Cmd, 3); I2C_Cmd[0] = 0x00; // data register I2C_Bus.write(Light_I2C_Addr, I2C_Cmd, 1); wait_ms(100); I2C_Bus.read(Light_I2C_Addr, I2C_Cmd, 2); Temp_i_1= I2C_Cmd[0]>>4; Temp_i_2= (I2C_Cmd[0]-(Temp_i_1<<4))*256+I2C_Cmd[1]; for(loop_count = 0,Temp_i_3 = 1 ; loop_count < Temp_i_1 ; Temp_i_3 = Temp_i_3 * 2,loop_count++); Light_Out= (Temp_i_2 * Temp_i_3) / 100; FRDM_UART_Debug.printf("Lux = %.2f\n\r", Light_Out); wait_ms(100); // Thermocouple SPI_High_byte = 0; SPI_Low_byte = 0; Temp_f_1 = 0.00; Temp_f_2 = 0.00; Temp_i_1 = 0; Temp_i_2 = 0; Temp_i_3 = 0; I2C_Cmd[0] = 0; I2C_Cmd[1] = 0; I2C_Cmd[2] = 0; loop_count = 0; Temp_f_1 = AN_Thermo.read_u16(); Temp_f_1 = (( Temp_f_1 / 65536 ) * 330); Thermo_Out = Temp_f_1; FRDM_UART_Debug.printf("Thermocouple volt diff = %.2f C\r\n",Thermo_Out); wait_ms(100); // Temp and Humidity SPI_High_byte = 0; SPI_Low_byte = 0; Temp_f_1 = 0.00; Temp_f_2 = 0.00; Temp_i_1 = 0; Temp_i_2 = 0; Temp_i_3 = 0; I2C_Cmd[0] = 0; I2C_Cmd[1] = 0; I2C_Cmd[2] = 0; loop_count = 0; Temp_i_1 = DHT_Temp_Hum.readData(); if (Temp_i_1 == 0) // Read success { //wait_ms(1000); Temp_f_1 = DHT_Temp_Hum.ReadTemperature(FARENHEIT); Temp_f_2 = DHT_Temp_Hum.ReadHumidity(); } else // Read failure { Temp_f_1 = 0; Temp_f_2 = 0; } Temp_Out = Temp_f_1; Hum_Out = Temp_f_2; FRDM_UART_Debug.printf("Temperature = %4.2f F , Humidity = %4.2f \r\n",Temp_Out,Hum_Out); wait_ms(100); FRDM_UART_Debug.printf("Sending this information to thingspeak.com\r\n"); ESP_8266_TX_Data(); wait(15); } } void ESP_8266_Init(void) { FRDM_UART_Debug.printf("Initializing and Reset ESP\r\n"); ESP_8266_UART.Reset(); //RESET ESP ESP_8266_UART.RcvReply(ESP_8266_CMD_Recv, 400); //receive a response from ESP //FRDM_UART_Debug.printf(ESP_8266_CMD_Recv); //Print the response onscreen wait(2); strcpy(ESP_8266_CMD_Send,"AT"); ESP_8266_UART.SendCMD(ESP_8266_CMD_Send); FRDM_UART_Debug.printf(ESP_8266_CMD_Send); //wait(2); ESP_8266_UART.RcvReply(ESP_8266_CMD_Recv, 400); FRDM_UART_Debug.printf(ESP_8266_CMD_Recv); wait(0.1); strcpy(ESP_8266_CMD_Send,"AT+CWMODE=1"); ESP_8266_UART.SendCMD(ESP_8266_CMD_Send); FRDM_UART_Debug.printf(ESP_8266_CMD_Send); wait(2); if(!strcmp(ESP_8266_CMD_Recv,"WIFI CONNECTED")) { strcpy(ESP_8266_CMD_Send,"AT+CWJAP=\""); strcat(ESP_8266_CMD_Send,WIFI_SSID); strcat(ESP_8266_CMD_Send,"\",\""); strcat(ESP_8266_CMD_Send,WIFI_PASS); strcat(ESP_8266_CMD_Send,"\""); ESP_8266_UART.SendCMD(ESP_8266_CMD_Send); FRDM_UART_Debug.printf(ESP_8266_CMD_Send); wait(5); ESP_8266_UART.RcvReply(ESP_8266_CMD_Recv, 400); FRDM_UART_Debug.printf(ESP_8266_CMD_Recv); } else FRDM_UART_Debug.printf("Wifi was preconfigured\r\n"); strcpy(ESP_8266_CMD_Send,"AT+CIPMUX=0"); ESP_8266_UART.SendCMD(ESP_8266_CMD_Send); FRDM_UART_Debug.printf(ESP_8266_CMD_Send); //wait(2); ESP_8266_UART.RcvReply(ESP_8266_CMD_Recv, 400); FRDM_UART_Debug.printf(ESP_8266_CMD_Recv); } void ESP_8266_TX_Data(void) { //ESP updates the Status of Thingspeak channel// strcpy(ESP_8266_CMD_Send,"AT+CIPSTART="); strcat(ESP_8266_CMD_Send,"\"TCP\",\""); strcat(ESP_8266_CMD_Send,IP); strcat(ESP_8266_CMD_Send,"\",80"); ESP_8266_UART.SendCMD(ESP_8266_CMD_Send); FRDM_UART_Debug.printf("S\r\n%s",ESP_8266_CMD_Send); //wait(2); ESP_8266_UART.RcvReply(ESP_8266_CMD_Recv, 1000); FRDM_UART_Debug.printf("R\r\n%s",ESP_8266_CMD_Recv); wait(1); /* float Amm_Out = 0; float Volt_Out = 0; float Light_Out = 0; float Thermo_Out = 0; float Temp_Out = 0; float Hum_Out = 0; int Motion_Out = 0; */ sprintf(ESP_8266_CMD_Send,"GET https://api.thingspeak.com/update?key=JJAOBK32WOINKT00&field1=%d&field2=%d&field3=%f&field4=%f&field5=%f&field6=%f&field7=%f&field8=%f\r\n" ,Motion_Out,Finger_Out,Amm_Out,Volt_Out,Light_Out,Thermo_Out,Temp_Out,Hum_Out); int i=0; for(i=0;ESP_8266_CMD_Send[i]!='\0';i++); i++; char cmd[255]; sprintf(cmd,"AT+CIPSEND=%d",i); //Send Number of open connection and Characters to send ESP_8266_UART.SendCMD(cmd); FRDM_UART_Debug.printf("S\r\n%s",cmd); while(i<=20 || ESP_8266_CMD_Recv == ">") { ESP_8266_UART.RcvReply(ESP_8266_CMD_Recv, 1000); wait(100); i++; } FRDM_UART_Debug.printf("R\r\n%s",ESP_8266_CMD_Recv); ESP_8266_UART.SendCMD(ESP_8266_CMD_Send); //Post value to thingspeak channel FRDM_UART_Debug.printf("S\r\n%s",ESP_8266_CMD_Send); while(i<=20 || ESP_8266_CMD_Recv == "OK") { ESP_8266_UART.RcvReply(ESP_8266_CMD_Recv, 1000); wait(100); i++; } FRDM_UART_Debug.printf("R\r\n%s",ESP_8266_CMD_Recv); }