Example for finding device based on USB vendor/product ID

geftactics · web-flow · commit 06496c6ee1cf · 2022-03-08T15:21:19.000Z
diff --git a/README.md b/README.md
@@ -39,3 +39,34 @@ raster = StarTSPImage.imageToRaster(image, cut=True)
 printer = open('/dev/usb/lp0', "wb")
 printer.write(raster)
 ```
+
+Search for Star printer via vendor/product ID, then create a PIL image and print:
+```
+import StarTSPImage
+import usb.core
+from PIL import Image, ImageDraw
+
+vendorId = 0x0519   # Star
+productId = 0x0003  # TSP143
+
+dev = usb.core.find(idVendor=vendorId, idProduct=productId)
+
+if dev:
+
+    print('Found:', usb.util.get_string(dev, dev.iProduct))
+
+    # Build PIL image
+    image = Image.new('RGB', (500, 500), color='White')
+    draw = ImageDraw.Draw(image)
+    draw.ellipse((0, 0, 500, 500), fill='Black')
+    draw.ellipse((10, 10, 490, 490), fill='White')
+
+    # Create raster for Star
+    raster = StarTSPImage.imageToRaster(image, cut=True)
+
+    # Send to device using endpoint 2 (OUT)
+    dev.write(2, raster)
+
+else:
+    print('Could not find device')
+```
