67 строки
1,2 КиБ
Go
67 строки
1,2 КиБ
Go
package hid
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import (
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"errors"
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"machine"
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"machine/usb"
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)
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// from usb-hid.go
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var (
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ErrHIDInvalidPort = errors.New("invalid USB port")
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ErrHIDInvalidCore = errors.New("invalid USB core")
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ErrHIDReportTransfer = errors.New("failed to transfer HID report")
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)
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const (
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hidEndpoint = usb.HID_ENDPOINT_IN
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REPORT_TYPE_INPUT = 1
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REPORT_TYPE_OUTPUT = 2
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REPORT_TYPE_FEATURE = 3
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)
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type hidDevicer interface {
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Handler() bool
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}
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var devices [5]hidDevicer
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var size int
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// SetHandler sets the handler. Only the first time it is called, it
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// calls machine.EnableHID for USB configuration
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func SetHandler(d hidDevicer) {
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if size == 0 {
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machine.EnableHID(handler, nil, setupHandler)
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}
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devices[size] = d
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size++
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}
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func handler() {
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for _, d := range devices {
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if d == nil {
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continue
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}
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if done := d.Handler(); done {
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return
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}
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}
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}
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var DefaultSetupHandler = setupHandler
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func setupHandler(setup usb.Setup) bool {
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ok := false
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if setup.BmRequestType == usb.SET_REPORT_TYPE && setup.BRequest == usb.SET_IDLE {
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machine.SendZlp()
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ok = true
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}
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return ok
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}
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// SendUSBPacket sends a HIDPacket.
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func SendUSBPacket(b []byte) {
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machine.SendUSBInPacket(hidEndpoint, b)
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}
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