harenber/go-scsupdate
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Checksumming and USB port searching works

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This commit is contained in:
Torsten Harenberg
2021-12-12 20:27:38 +01:00
parent 7c7593c601
commit 3f1fdd21fe
6 changed files with 206 additions and 41 deletions
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77
firmware/firmware.go Normal file
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@@ -0,0 +1,77 @@
package firmware
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"hash/crc32"
"io"
"io/ioutil"
"os"
"path"
)
// FwExists check if file exists
func FwExists(path string) bool {
_, err := os.Stat(path)
return !errors.Is(err, os.ErrNotExist)
}
func ChkHeader(fwfile string) bool {
fmt.Println("checking ", fwfile)
// SCS has two different file layouts, one for the "Dragons", the other for any older modem
var offset uint32
if path.Ext(fwfile) == ".dr7" {
offset = 0
} else {
offset = 4
}
r, err := os.Open(fwfile)
if err != nil {
return false
}
defer r.Close()
var header [2]byte
_, err = io.ReadFull(r, header[:])
if err != nil {
return false
}
if offset == 0 {
if header != [2]byte{0x50, 0x34} {
fmt.Println("ERROR: wrong firmware header")
//return false
}
} else {
if header != [2]byte{0x60, 0xea} {
fmt.Println("ERROR: wrong firmware header")
//return false
}
}
r.Close()
firmware, err := ioutil.ReadFile(fwfile)
if err != nil {
fmt.Println("ERROR: ReadFile operation failed")
}
var size uint32
if offset == 0 {
size = binary.LittleEndian.Uint32(firmware[4:8]) // Dragons
} else {
size = uint32(binary.LittleEndian.Uint16(firmware[2:4])) // PTC-3 and Co
}
a := make([]byte, 4)
//binary.LittleEndian.PutUint32(a, crc32.ChecksumIEEE(firmware[4:size+4])) // PTC-3
binary.LittleEndian.PutUint32(a, crc32.ChecksumIEEE(firmware[offset:offset+size]))
//if bytes.Equal(a, firmware[4+size:8+size]) { // PTC-3
if bytes.Equal(a, firmware[offset+size:offset+size+4]) {
fmt.Println("CRC checksum ok!")
} else {
fmt.Println("CRC checksum NOT ok!")
return false
}
return true
}

8
go.mod
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@@ -2,10 +2,16 @@ module go-scsupdate
go 1.17
require github.com/albenik/go-serial v1.2.0
require (
github.com/akamensky/argparse v1.3.1
github.com/albenik/go-serial v1.2.0
)
require (
github.com/creack/goselect v0.1.0 // indirect
github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3 // indirect
github.com/sigurn/crc8 v0.0.0-20160107002456-e55481d6f45c // indirect
github.com/sigurn/utils v0.0.0-20190728110027-e1fefb11a144 // indirect
go.uber.org/atomic v1.4.0 // indirect
go.uber.org/multierr v1.1.0 // indirect
golang.org/x/sys v0.0.0-20190712062909-fae7ac547cb7 // indirect

8
go.sum
View File

@@ -1,3 +1,5 @@
github.com/akamensky/argparse v1.3.1 h1:kP6+OyvR0fuBH6UhbE6yh/nskrDEIQgEA1SUXDPjx4g=
github.com/akamensky/argparse v1.3.1/go.mod h1:S5kwC7IuDcEr5VeXtGPRVZ5o/FdhcMlQz4IZQuw64xA=
github.com/albenik/go-serial v1.2.0 h1:VhEIWqP5tbWtsWoCjeBHHQEf6qeXpsJXvZBP9px5F84=
github.com/albenik/go-serial v1.2.0/go.mod h1:9NHUOwCBJER+lAaitTWLJda/GnYoP4Vga7KU3vn1lmM=
github.com/creack/goselect v0.1.0 h1:4QiXIhcpSQF50XGaBsFzesjwX/1qOY5bOveQPmN9CXY=
@@ -7,6 +9,12 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3 h1:aQKxg3+2p+IFXXg97McgDGT5zcMrQoi0EICZs8Pgchs=
github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3/go.mod h1:9/etS5gpQq9BJsJMWg1wpLbfuSnkm8dPF6FdW2JXVhA=
github.com/sigurn/crc8 v0.0.0-20160107002456-e55481d6f45c h1:hk0Jigjfq59yDMgd6bzi22Das5tyxU0CtOkh7a9io84=
github.com/sigurn/crc8 v0.0.0-20160107002456-e55481d6f45c/go.mod h1:cyrWuItcOVIGX6fBZ/G00z4ykprWM7hH58fSavNkjRg=
github.com/sigurn/utils v0.0.0-20190728110027-e1fefb11a144 h1:ccb8W1+mYuZvlpn/mJUMAbsFHTMCpcJBS78AsBQxNcY=
github.com/sigurn/utils v0.0.0-20190728110027-e1fefb11a144/go.mod h1:VRI4lXkrUH5Cygl6mbG1BRUfMMoT2o8BkrtBDUAm+GU=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=

48
main.go
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@@ -1,5 +1,51 @@
package main
import (
"fmt"
"github.com/akamensky/argparse"
"go-scsupdate/firmware"
"go-scsupdate/usb"
"os"
)
func main() {
lsusb()
parser := argparse.NewParser("go-scsupdate", "Update Firmware of SCS PACTOR modems")
serialDevice := parser.String("s", "serialDevice", &argparse.Options{Required: false, Help: "(optional) serial device the modem is attached to, e.g. /dev/ttyUSB0. If not set, go-scsupdate will search for SCS modems."})
_ = parser.String("b", "baudrate", &argparse.Options{Required: false, Help: "(optional) sets the serial baudrate, e.g. 115200"})
f := parser.String("f", "file", &argparse.Options{Required: false, Help: "(required) the file to flash, e.g. profi41r.pro"})
err := parser.Parse(os.Args)
if err != nil {
fmt.Print(parser.Usage(err))
os.Exit(1)
}
fmt.Println(*serialDevice)
var ports []usb.Scsid
if *serialDevice == "" {
if ports, err = usb.FindSCS(); err == nil {
fmt.Println(ports)
if len(ports) == 0 {
fmt.Println("Found no SCS modem.")
//os.Exit(1)
}
if len(ports) != 1 {
fmt.Println("Found more than one SCS modem. You need to choose one with the -s flag.\nfound: ")
for _, p := range ports {
fmt.Printf("Port: %30s : Name: %s\n", p.Port, p.Name)
}
}
} else {
fmt.Println("Error while seaching SCS modems: ", err)
}
}
if !firmware.FwExists(*f) {
fmt.Printf("Error: firmware file %s does not exist.\n", *f)
os.Exit(1)
}
if !firmware.ChkHeader(*f) {
os.Exit(1)
} else {
fmt.Println("all ok")
}
}

39
usb.go
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@@ -1,39 +0,0 @@
package main
import (
"fmt"
"log"
"github.com/albenik/go-serial/enumerator"
)
/*
USB Product IDs of the SCS devices:
0xD010 SCS PTC-IIusb
0xD011 SCS Tracker / DSP TNC
0xD012 SCS P4dragon DR-7800
0xD013 SCS P4dragon DR-7400
0xD014 - not used
0xD015 SCS PTC-IIIusb
0xD016 - not used
0xD017 - not used
*/
func lsusb() {
ports, err := enumerator.GetDetailedPortsList()
if err != nil {
log.Fatal(err)
}
if len(ports) == 0 {
fmt.Println("No serial ports found!")
return
}
for _, port := range ports {
fmt.Printf("Found port: %s\n", port.Name)
if port.IsUSB {
fmt.Printf(" USB ID %s:%s\n", port.VID, port.PID)
fmt.Printf(" USB serial %s\n", port.SerialNumber)
}
}
}

67
usb/usb.go Normal file
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@@ -0,0 +1,67 @@
package usb
import (
"errors"
"fmt"
"github.com/albenik/go-serial/enumerator"
"log"
)
/*
USB Product IDs of the SCS devices:
0xD010 SCS PTC-IIusb
0xD011 SCS Tracker / DSP TNC
0xD012 SCS P4dragon DR-7800
0xD013 SCS P4dragon DR-7400
0xD014 - not used
0xD015 SCS PTC-IIIusb
0xD016 - not used
0xD017 - not used
*/
type Scsid struct {
Port, id, Name string
Baudrate int
}
var scsids map[string]string = map[string]string{
"d010": "SCS PTC-IIusb",
"d011": "SCS Tracker / DSP TNC",
"d012": "SCS P4dragon DR-7800",
"d013": "SCS P4dragon DR-7400",
"d015": "SCS PTC-IIIusb"}
var scsbaudrates map[string]int = map[string]int{
"d010": 115200,
"d011": 38400,
"d012": 829400,
"d013": 829400,
"d015": 115200}
func FindSCS() ([]Scsid, error) {
foundids := []Scsid{}
ports, err := enumerator.GetDetailedPortsList()
if err != nil {
log.Fatal(err)
return nil, err
}
if len(ports) == 0 {
return nil, errors.New("No serial ports found")
}
for _, port := range ports {
fmt.Printf("Found Port: %s\n", port.Name)
if port.IsUSB {
// fmt.Printf(" USB ID %s:%s\n", Port.VID, Port.PID)
// fmt.Printf(" USB serial %s\n", Port.SerialNumber)
if port.VID == "0403" {
if _, ok := scsids[port.PID]; ok {
foundids = append(foundids, Scsid{Port: port.Name, id: port.PID, Name: scsids[port.PID], Baudrate: scsbaudrates[port.PID]})
}
}
}
}
return foundids, nil
}