ports/stm32/factoryreset: Add TinyUSB-specific boot.py examples.

The default boot.py template now conditionally includes different USB
configuration examples based on whether TinyUSB or the legacy USB stack
is enabled at build time.

For TinyUSB builds (MICROPY_HW_TINYUSB_STACK=1), the template shows the
modern machine.USBDevice() API with examples for CDC, MSC, and NCM
(network) drivers. For legacy USB builds, it continues to show the
existing pyb.usb_mode() examples.

This ensures users see the correct USB API for their board when
formatting a new filesystem.

Signed-off-by: Andrew Leech <[email protected]>

Author: pi-anl

ports/stm32/factoryreset.c

@@ -44,9 +44,18 @@ static const char fresh_boot_py[] =
     "import pyb\r\n"
     "#pyb.main('main.py') # main script to run after this one\r\n"
 #if MICROPY_HW_ENABLE_USB
+#if MICROPY_HW_TINYUSB_STACK
+    "#usb = machine.USBDevice()\r\n"
+    "#usb.builtin_driver = usb.BUILTIN_CDC | usb.BUILTIN_MSC  # serial and storage\r\n"
+    "#usb.active(True)\r\n"
+#if MICROPY_HW_NETWORK_USBNET
+    "#usb.builtin_driver = usb.BUILTIN_CDC | usb.BUILTIN_NCM  # serial and network\r\n"
+#endif
+#else
     "#pyb.usb_mode('VCP+MSC') # act as a serial and a storage device\r\n"
     "#pyb.usb_mode('VCP+HID') # act as a serial device and a mouse\r\n"
 #endif
+#endif
 #if MICROPY_PY_NETWORK
     "#import network\r\n"
     "#network.country('US') # ISO 3166-1 Alpha-2 code, eg US, GB, DE, AU or XX for worldwide\r\n"