diff options
| author | hathach <[email protected]> | 2014-03-23 10:15:32 +0700 |
|---|---|---|
| committer | hathach <[email protected]> | 2014-03-23 10:15:32 +0700 |
| commit | e28170db2f43db51e0baff1e79c87490064c1258 (patch) | |
| tree | 3b0ad8657ea0da5c79e8b2469a40650be0ac8aff /tinyusb/device | |
| parent | 7ee4b550c2b29e0aab1ff00fdffa0bbc0230bd45 (diff) | |
adding usbd_enum_buffer to usbd
remove string descriptor USB RAM requirement
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
{
|