diff options
Diffstat (limited to 'examples/device/dynamic_configuration/src/usb_descriptors.c')
| -rw-r--r-- | examples/device/dynamic_configuration/src/usb_descriptors.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/examples/device/dynamic_configuration/src/usb_descriptors.c b/examples/device/dynamic_configuration/src/usb_descriptors.c index c4049414f..838052ea1 100644 --- a/examples/device/dynamic_configuration/src/usb_descriptors.c +++ b/examples/device/dynamic_configuration/src/usb_descriptors.c @@ -26,15 +26,8 @@ #include "bsp/board_api.h" #include "tusb.h" -/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug. - * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC. - * - * Auto ProductID layout's Bitmap: - * [MSB] HID | MSC | CDC [LSB] - */ -#define PID_MAP(itf, n) ((CFG_TUD_##itf) ? (1 << (n)) : 0) -#define USB_PID (0x4000 | PID_MAP(CDC, 0) | PID_MAP(MSC, 1) | PID_MAP(HID, 2) | \ - PID_MAP(MIDI, 3) | PID_MAP(VENDOR, 4) ) +// Unique PID per example: guarantees re-enumeration on re-flash and a fresh host driver match. +#define USB_PID 0x400d // Configuration mode // 0 : enumerated as CDC/MIDI. Board button is not pressed when enumerating @@ -79,7 +72,7 @@ tusb_desc_device_t const desc_device_1 = .bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE, .idVendor = 0xCafe, - .idProduct = USB_PID + 11, // should be different PID than desc0 + .idProduct = USB_PID + 0x0100, // must differ from desc0's PID and stay outside the 0x40xx per-example space .bcdDevice = 0x0100, .iManufacturer = 0x01, |