add tud_descriptor_string_cb() for getting string descriptor from application

- remove tud_desc_set.string_arr/string_count
2019-05-11 16:31:08 +07:00
parent bfa073818c
commit de56a0ca89
8 changed files with 208 additions and 137 deletions
--- a/src/device/usbd_control.c
+++ b/src/device/usbd_control.c
@@ -93,7 +93,7 @@ bool usbd_control_xfer(uint8_t rhport, tusb_control_request_t const * request, v
  _control_state.total_len = tu_min16(len, request->wLength);
  _control_state.total_transferred = 0;

-  if ( buffer != NULL && len )
+  if ( (buffer != NULL) && len )
  {
    // Data stage
    TU_ASSERT( start_control_data_xact(rhport) );