RFID Tag converter

rfidtest.go

package main

import (
	"fmt"
	"strconv"
)

func main() {

	var err error

	// Want to go from 123456 (what reader says)
	// to 157920 (what the door system expects)
	n := int64(123456)
	bins := strconv.FormatInt(n, 2)
	bins = fmt.Sprintf("%024s", bins)
	fmt.Println(bins)

	frontb := bins[0:8]
	backb := bins[len(bins)-16:]

	fmt.Println(frontb)
	fmt.Println(backb)

	f, err := strconv.ParseInt(frontb, 2, 32)
	if err != nil {
		fmt.Println(err)
	}

	b, err := strconv.ParseInt(backb, 2, 32)
	if err != nil {
		fmt.Println(err)
	}

	final := fmt.Sprintf("%d%d", f, b)
	fmt.Println(final) // Should be 157920
}

This bit of code is how to convert from the number registered by the RFID reader to the format that the UHPPOTE door entry system wants.