Re: [9fans] How read data from USB-device ?

["Олег Бахарев" <disconnectix@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1394 bytes --]

Not work (
Program itself:

package main

import(
    "flag"
    "fmt"
    "os"
)

func main() {

    var color = flag.Int("color", 0x00000000, "Color value")
    flag.Parse()

    var hexColor uint32 = uint32(*color)

    var rgb [3]byte;
    rgb[2] = byte(hexColor & 0x000000ff)
    rgb[1] = byte((hexColor & 0x0000ff00) >> 8)
    rgb[0] = byte((hexColor & 0x00ff0000) >> 16)

    usbControl, controlErr := os.Open("/dev/eiaU5/eiaUctl")

    if controlErr != nil {
        fmt.Println(controlErr)
        os.Exit(1)
    }
    defer usbControl.Close()

    usbControl.WriteString("b9600")
    usbControl.Sync()

    usbFile, usbErr := os.Open("/dev/eiaU5/eiaU")

    if usbErr != nil {
        fmt.Println(usbErr)
        os.Exit(1)
    }
    defer usbFile.Close()

    fmt.Print(rgb[0])
    fmt.Print(rgb[1])
    fmt.Print(rgb[2])

    usbFile.Write(rgb[:])
}

2018-08-16 14:26 GMT+03:00 Richard Miller <9fans@hamnavoe.com>:

> > I encountered some problem: there is a trivial program on Go that
> > writes to the files / dev / eiaU4 / eiaUctl and / dev / eiaU the
>
> I hope you meant /dev/eiaU4/eiaU, not /dev/eiaU
>
> Unless you do a "bind -a /dev/eiaU4 /dev" after starting the usb
> serial driver, which allows you to reference the device files
> as /dev/eiaUctl and /dev/eiaU and not have to remember the unit number.
>
>
>

[-- Attachment #2: Type: text/html, Size: 2099 bytes --]