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hi guys, i’m working on a project that get data from bluetooth and send it for blynk.
and that data from bluetooth is temperature and resistance. so there are two kinds of data. (frankly 6 kinds of data with naming data)
but when it come to slave bluetooth, it is just hm10.read() …
my plan is showing the data for super chart by blynk.
but i can’t identify that data for each v0,v1… how can i do that?
I using Nodemcu and connect hm-10 for bluetooth and here my code
please help me TT
this is master code
#include <Wire.h>
#include <Adafruit_INA219.h> // You will need to download this library
#include <SoftwareSerial.h>
Adafruit_INA219 sensor219; // Declare and instance of INA219
SoftwareSerial mySerial(7, 8); // RX, TX
// Connect HM10 Arduino Uno
// TXD Pin 7
// RXD Pin 8
const int temperaturePin = 0;
void setup()
{
//pinMode(LED1,OUTPUT);
sensor219.begin();
Serial.begin(9600);
Serial.println("Emartee.Com");
Serial.println("Voltage: ");
Serial.print("V");
while (!Serial)
Serial.println("Hello World!");
mySerial.begin(9600);
}
void loop() {
float busVoltage = 0;
float current = 0; // Measure in milli amps
float power = 0;
int reading = analogRead(temperaturePin);
int temp=5.0*reading*100/1024.0;
busVoltage = sensor219.getBusVoltage_V();
current = sensor219.getCurrent_mA();
power = busVoltage * (current/1000); // Calculate the Power
Serial.print("Bus Voltage: ");
Serial.print(busVoltage);
Serial.println(" V");
Serial.print("Current: ");
Serial.print(current);
Serial.println(" mA");
Serial.print("Power: ");
Serial.print(power);
Serial.println(" W");
Serial.print(temp);
float resistance;
char c = '\n';
resistance = busVoltage/current;
mySerial.print("Voltage: ");
mySerial.print(busVoltage);
mySerial.print(c);
mySerial.print("Current: ");
mySerial.print(current);
mySerial.print(c);
mySerial.print("Resistance: ");
mySerial.print(resistance);
mySerial.print(c);
mySerial.print("Temperature");
mySerial.print(temp);
mySerial.print(c);
delay(1000);
}
and this is slave coding
#include <SoftwareSerial.h>
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
SoftwareSerial hm10(D5,D6); //RX, TX 연결
BlynkTimer timer;
char auth[] = "99bfff425eba40969d41a124fa4d8333";
byte data;
char ssid[] = "KHU Wi-Fi Guest";
char pass[] = "vision2020";
void myTimerEvent()
{Blynk.virtualWrite(V0,data);
}
void setup() {
Serial.begin(9600);
hm10.begin(9600);
Blynk.begin(auth, ssid, pass);
timer.setInterval(1000L,myTimerEvent);
}
void loop() {
Blynk.run();
timer.run();
if(hm10.available()){
byte data=hm10.read();
Serial.write(data);
}
if(Serial.available()){
byte data=Serial.read();
hm10.write(data);
}
}
so i want show the data(temperature,current,voltage,resistance) for superchar by blynk
and i don’t know how i divide data from bluetooth to temperature,current,voltage,resistance