diff options
Diffstat (limited to 'tinyusb/device')
| -rw-r--r-- | tinyusb/device/usbd.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/tinyusb/device/usbd.c b/tinyusb/device/usbd.c index b64b25f4a..2df0916aa 100644 --- a/tinyusb/device/usbd.c +++ b/tinyusb/device/usbd.c @@ -52,6 +52,7 @@ // MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
usbd_device_info_t usbd_devices[CONTROLLER_DEVICE_NUMBER];
+TUSB_CFG_ATTR_USBRAM uint8_t usbd_enum_buffer[TUSB_CFG_DEVICE_ENUM_BUFFER_SIZE];
static usbd_class_driver_t const usbd_class_drivers[] =
{
@@ -346,9 +347,12 @@ static tusb_error_t get_descriptor(uint8_t coreid, tusb_control_request_t const }
else if ( TUSB_DESC_TYPE_STRING == desc_type )
{
- if ( !(desc_index < TUSB_CFG_DEVICE_STRING_DESCRIPTOR_COUNT && tusbd_descriptor_pointers.p_string_arr[desc_index] != NULL) ) return TUSB_ERROR_DCD_CONTROL_REQUEST_NOT_SUPPORT;
+ if ( !(desc_index < TUSB_CFG_DEVICE_STRING_DESCRIPTOR_COUNT) ) return TUSB_ERROR_DCD_CONTROL_REQUEST_NOT_SUPPORT;
+ uint8_t const * const p_desc_string = tusbd_descriptor_pointers.p_string_arr[desc_index];
+ ASSERT( p_desc_string != NULL && p_desc_string[0] <= TUSB_CFG_DEVICE_ENUM_BUFFER_SIZE, TUSB_ERROR_NOT_ENOUGH_MEMORY);
- (*pp_buffer) = tusbd_descriptor_pointers.p_string_arr[desc_index];
+ memcpy(usbd_enum_buffer, p_desc_string, p_desc_string[0]); // first byte of descriptor is its size
+ (*pp_buffer) = usbd_enum_buffer;
(*p_length) = **pp_buffer;
}else
{
|