Modbus float32 to uint16_t conversion for registers

modbus_float2reg.ino

/*
 Figuring out how to convert floats to uint16_t for Modbus and vice-versa
 Serial Output:
  Float 3.14 = [16456 , 62915]
  [ 5243 , 16830 ] = 23.76
*/

#include <Arduino.h>

float f = 3.14;
uint16_t a[2] = {16830, 5243};

void setup() {
  Serial.begin(115200);
}

union {
    float asFloat;
    uint16_t asInt[2];
} flreg;

void loop() {
  Serial.print("Float "); Serial.print(f); Serial.print(" = ");
  flreg.asFloat = f;
  Serial.print("["); Serial.print(flreg.asInt[1]); 
  Serial.print(" , "); 
  Serial.print(flreg.asInt[0]); Serial.println("]");
  
  flreg.asInt[1] = 16830;
  flreg.asInt[0] = 5243;
  Serial.print("[ "); Serial.print(flreg.asInt[0]); Serial.print(" , ");
  Serial.print(flreg.asInt[1]); Serial.print(" ]");
  Serial.print(" = "); Serial.println(flreg.asFloat);
  delay(10000);
}