Working example code with 3-button combo.

cmd/joyful/main.go

@@ -2,7 +2,7 @@ package main
 
 import (
 	"fmt"
-	"syscall"
+	"os"
 	"time"
 
 	"git.annabunches.net/annabunches/joyful/internal/virtualdevice"
@@ -10,9 +10,6 @@ import (
 )
 
 func main() {
-	// Check for and destroy any existing joyful devices
-	virtualdevice.CleanupStaleVirtualDevices()
-
 	// STUB: parse virtual device config
 
 	// STUB: parse mapping config
@@ -41,34 +38,93 @@ func main() {
 			},
 		},
 	)
-	if err != nil {
-		fmt.Printf("Failed to create vDevice: %s", err.Error())
-	}
+	fatalIfError(err, "Failed to create virtual device")
 
-	location, err := vDevice.PhysicalLocation()
-	if err != nil {
-		fmt.Printf("Couldn't get virtual device location: %s\n", err.Error())
-	}
-	fmt.Printf("Device created as %s. Press Ctrl+C to quit and destroy the device.\n", location)
+	buffer := virtualdevice.NewEventBuffer(vDevice)
+
+	name, err := vDevice.Name()
+	if err != nil {
+		name = "Unknown"
+	}
+	fmt.Printf("Virtual device created as %s.\n", name)
+
+	pDevice, err := evdev.Open("/dev/input/event12")
+	fatalIfError(err, "Couldn't open physical device")
+
+	name, err = pDevice.Name()
+	if err != nil {
+		name = "Unknown"
+	}
+	fmt.Printf("Connected to physical device %s\n", name)
+
+	var combo int32 = 0
 
-	var value int32 = 1
 	for {
-		eventTime := syscall.NsecToTimeval(int64(time.Now().Nanosecond()))
+		last := combo
 
-		vDevice.WriteOne(&evdev.InputEvent{
-			Time:  eventTime,
-			Type:  evdev.EV_KEY,
-			Code:  evdev.BTN_TRIGGER,
-			Value: value,
-		})
+		event, err := pDevice.ReadOne()
+		logIfError(err, "Error while reading event")
 
-		if value == 0 {
-			value = 1
-		} else {
-			value = 0
+		// FIXME: test code
+		for event.Code != evdev.SYN_REPORT {
+			if event.Type == evdev.EV_KEY {
+				switch event.Code {
+				case evdev.BTN_TRIGGER:
+					if event.Value == 0 {
+						fmt.Println("Trigger 0")
+						combo++
+					}
+					if event.Value == 1 {
+						fmt.Println("Trigger 1")
+						combo--
+					}
+
+				case evdev.BTN_THUMB:
+					if event.Value == 0 {
+						fmt.Println("Thumb 0")
+						combo--
+					}
+					if event.Value == 1 {
+						fmt.Println("Thumb 1")
+						combo++
+					}
+
+				case evdev.BTN_THUMB2:
+					if event.Value == 0 {
+						fmt.Println("Thumb2 0")
+						combo--
+					}
+					if event.Value == 1 {
+						fmt.Println("Thumb2 1")
+						combo++
+					}
+
+				}
+			}
+
+			event, err = pDevice.ReadOne()
+			logIfError(err, "Error while reading event")
 		}
 
-		time.Sleep(1 * time.Second)
+		if combo > last && combo == 3 {
+			buffer.AddEvent(&evdev.InputEvent{
+				Type:  evdev.EV_KEY,
+				Code:  evdev.BTN_TRIGGER,
+				Value: 1,
+			})
+		}
+		if combo < last && combo == 2 {
+			buffer.AddEvent(&evdev.InputEvent{
+				Type:  evdev.EV_KEY,
+				Code:  evdev.BTN_TRIGGER,
+				Value: 0,
+			})
+		}
+
+		buffer.SendEvents()
+		// FIXME: end test code
+
+		time.Sleep(1 * time.Millisecond)
 	}
 }
 
@@ -88,3 +144,20 @@ func jsButtons() []evdev.EvCode {
 
 	return buttons
 }
+
+func logIfError(err error, msg string) {
+	if err == nil {
+		return
+	}
+
+	fmt.Printf("%s: %s\n", msg, err.Error())
+}
+
+func fatalIfError(err error, msg string) {
+	if err == nil {
+		return
+	}
+
+	logIfError(err, msg)
+	os.Exit(1)
+}