drivers/lora/lorawan/bytes.go

package lorawan

import "crypto/rand"

// reverseBytes reverses order of a given byte slice
func reverseBytes(s []byte) []byte {
	result := make([]byte, len(s))
	for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
		result[i], result[j] = s[j], s[i]
	}
	return result
}

// GetRand16 returns 2 random bytes
func GetRand16() ([2]uint8, error) {
	randomBytes := make([]byte, 2)
	_, err := rand.Read(randomBytes)
	if err != nil {
		return [2]uint8{}, err
	}

	return [2]uint8{randomBytes[0], randomBytes[1]}, nil
}