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Give Zephyr boards a USB serial number #11579

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Merged
dhalbert merged 1 commit into from
Oct 13, 2026
Merged

Give Zephyr boards a USB serial number #11579

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12 changes: 12 additions & 0 deletions ports/zephyr-cp/supervisor/usb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,10 @@ USBD_DEVICE_DEFINE(main_usbd,
USBD_DESC_LANG_DEFINE(main_lang);
USBD_DESC_MANUFACTURER_DEFINE(main_mfr, USB_MANUFACTURER);
USBD_DESC_PRODUCT_DEFINE(main_product, USB_PRODUCT);
// The stack fills this from hwinfo and fails the request without a driver.
#if defined(CONFIG_HWINFO_HAS_DRIVER)
USBD_DESC_SERIAL_NUMBER_DEFINE(main_sn);
#endif

USBD_DESC_CONFIG_DEFINE(fs_cfg_desc, "FS Configuration");
USBD_DESC_CONFIG_DEFINE(hs_cfg_desc, "HS Configuration");
Expand Down Expand Up @@ -268,6 +272,14 @@ void usb_init(void) {
return;
}

#if defined(CONFIG_HWINFO_HAS_DRIVER)
err = usbd_add_descriptor(&main_usbd, &main_sn);
if (err) {
LOG_ERR("Failed to initialize serial number descriptor (%d)", err);
return;
}
#endif

bool console = usb_cdc_console_enabled();
if (console) {
uint8_t *receiver_buffer = port_malloc(128, true);
Expand Down
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