crc16 modbus giving wrong result

[johnwick03]

I tried getting crc for hex string 08000001 using crc16.ChecksumIBM. But instead of 84C3 it is giving me 3226. This is my code:
data := []byte("08000001")
checksum := crc16.ChecksumIBM(data)
fmt.Println("\n checksum:", checksum)

[aliakseiz]

Replace with checksum := ^crc16.ChecksumIBM(data)
Modbus checksum should be calculated without XOR out. Take a look at Modbus test in this repository.

But still you will not get 0x84C3, because you're building CRC of chars array.

d := []byte("08000001")
c := ^crc16.ChecksumIBM(d)
fmt.Printf("checksum:%X\n", c) // checksum:F365

d = []byte{0x08, 0x00, 0x00, 0x01}
c = ^crc16.ChecksumIBM(d)
fmt.Printf("checksum:%X\n", c) // checksum:84C3

s := "08000001"
d, err = hex.DecodeString(s)
c = ^crc16.ChecksumIBM(d)
fmt.Printf("checksum:%X\n", c) // checksum:84C3