Replace load.sh with Go program

cmd/load/main.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"time"
+
+	"github.com/theater/picomap/lib/picoserial"
+	"github.com/theater/picomap/lib/picotool"
+)
+
+func main() {
+	wd, err := os.Getwd()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+	buildDir := filepath.Join(wd, "build")
+
+	if err := run(buildDir); err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+}
+
+func run(buildDir string) error {
+	fmt.Println("Building...")
+	cmd := exec.Command("make", "-C", buildDir)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("build failed: %w", err)
+	}
+
+	dev, err := picoserial.FindDevice()
+	if err != nil {
+		return err
+	}
+	if dev != "" {
+		fmt.Printf("Sending 'b' to %s to enter BOOTSEL mode...\n", dev)
+		if err := picoserial.SendByte(dev, 'b'); err != nil {
+			return err
+		}
+		time.Sleep(2 * time.Second)
+	}
+
+	uf2 := filepath.Join(buildDir, "picomap.uf2")
+	fmt.Println("Loading firmware...")
+	if err := picotool.Load(uf2); err != nil {
+		return err
+	}
+
+	fmt.Println("Rebooting...")
+	_ = picotool.Reboot()
+
+	fmt.Println("Done.")
+	return nil
+}