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Diffstat (limited to 'usb.go')
-rw-r--r--usb.go76
1 files changed, 76 insertions, 0 deletions
diff --git a/usb.go b/usb.go
new file mode 100644
index 0000000..4770f92
--- /dev/null
+++ b/usb.go
@@ -0,0 +1,76 @@
+package main
+
+import (
+ "bufio"
+ "log"
+
+ "github.com/kylelemons/gousb/usb"
+)
+
+type Device struct {
+ ctx *usb.Context
+ dev *usb.Device
+}
+
+var (
+ vendor = usb.ID(0x0b4d)
+ product = usb.ID(0x110a)
+ debug = 3
+)
+
+func CC100(desc *usb.Descriptor) bool {
+ return desc.Vendor == vendor && desc.Product == product
+}
+
+func NewDevice() (d Device) {
+ ctx := usb.NewContext()
+ ctx.Debug(debug)
+ devs, err := ctx.ListDevices(CC100)
+ if err != nil {
+ log.Fatal(err)
+ }
+ if len(devs) != 1 {
+ for _, dev := range devs {
+ dev.Close()
+ }
+ log.Fatal("wrong number of devices")
+ }
+ return Device{ctx: ctx, dev: devs[0]}
+}
+
+func (d Device) Close() {
+ d.dev.Close()
+ d.ctx.Close()
+}
+
+func (d Device) Handle() *bufio.ReadWriter {
+ var (
+ r *bufio.Reader
+ w *bufio.Writer
+ )
+
+ for _, c := range d.dev.Configs {
+ for _, i := range c.Interfaces {
+ for _, s := range i.Setups {
+ for _, ep := range s.Endpoints {
+ e, err := d.dev.OpenEndpoint(
+ c.Config,
+ i.Number,
+ s.Number,
+ ep.Address)
+ if err != nil {
+ log.Fatal(err)
+ }
+ switch ep.Direction() {
+ case usb.ENDPOINT_DIR_OUT:
+ w = bufio.NewWriter(e)
+ case usb.ENDPOINT_DIR_IN:
+ r = bufio.NewReader(e)
+ }
+ }
+ }
+ }
+ }
+
+ return bufio.NewReadWriter(r, w)
+}