/
usb.go
58 lines (50 loc) · 1.11 KB
/
usb.go
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package main
import (
"errors"
"fmt"
"github.com/tonymagro/asign"
"github.com/tonymagro/usb"
"log"
)
const (
ALPHA_VENDOR_ID = 0x8765
ALPHA_PRODUCT_ID = 0x1234
ALPHA_INTERFACE_ID = 0x00
)
const (
RECV_LENGTH = 0x40 // Max Packet Size of 64
SEND_LENGTH = 0x40 // Max Packet Size of 64
WRITE_ENDPOINT = 0x02
READ_ENDPOINT = 0x82
WRITE_TIMEOUT = 5000
READ_TIMEOUT = 5000
)
type SignUSB usb.Device
func (self *SignUSB) Write(p []byte) (n int, err error) {
fmt.Println(asign.PacketString(p))
dev := usb.Device(*self)
dev.BulkWrite(WRITE_ENDPOINT, p)
n = len(p)
return
}
func (self *SignUSB) Read(p []byte) (n int, err error) {
return
}
func (self *SignUSB) Close() {
dev := usb.Device(*self)
v,p := dev.Vendor(), dev.Product()
dev.Close()
log.Println("Closed Device: ", v, p)
}
func openSignUSB() (sign *SignUSB, err error) {
dev := usb.Open(ALPHA_VENDOR_ID, ALPHA_PRODUCT_ID)
if dev == nil {
err = errors.New("Invalid Device")
return
}
dev.Interface(0)
//dev.timeout = WRITE_TIMEOUT
log.Println("Opened Device: ", dev.Vendor(), dev.Product())
s := SignUSB(*dev)
return &s, nil
}