Convert float to a Char value?[SOLVED]

Projects Programming
25

Try this

#include "SafeString.h"

//#include <LiquidCrystal.h>// Highlight out when ready to use mian display
//LiquidCrystal lcd(2, 4, 5, 3, 7, 8);
// to print the lcd data without an lcd
#define lcd Serial

const byte numChars = 10; //Number of bits to get
float resistance = 12.36;
double floatVal = 23.01;
String stringVal = "";     //data on buff is copied to this string
unsigned long previousMillis = 0;        // will store last time LED was updated
const long interval = 1000;           // interval at which to blink (milliseconds)

typedef struct Data_struct {
  int PRO3600_Disconnected = 10;
  boolean No_data ;
  char receivedChars[numChars];   // an array to store the received data
} Data_struct;
Data_struct myData;

void setup()
{
  Serial.begin(9600);
  for (int i = 10; i > 0; i--) {
    Serial.print(' '); Serial.print(i);
    delay(500);
  }
  Serial.println();
  //  lcd.begin(8, 2);
  //  lcd.clear();
  //resistance = resistance - 40.36;
  SafeString::setOutput(Serial); // for error msgs
}

void loop()
{
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval) {
    // save the last time you blinked the LED
    previousMillis = currentMillis;
    resistance = resistance - 1.00;
  }
  createSafeStringFromCharArray(sfResistance, myData.receivedChars); // wraps in a SafeString and  keeps the current text if any
  sfResistance = ""; // clear it  OR you could use myData.receivedChars[0] ='\0';
  sfResistance.print(resistance, 2);
  // dtostrf(resistance, 6, 2, myData.receivedChars); // L
  Serial.print("dtstore: ");
  Serial.println(myData.receivedChars);  // just print it  SafeString leaves the char[] correctly terminated even if there are errors

  // lcd.setCursor(0, 0);
  lcd.print(resistance);
  // lcd.setCursor(0, 1);
  lcd.print(myData.receivedChars);
  lcd.println();
}