History: usbh_cd_cdc_ecm

This page describes all changes made to the usbh_cd_cdc_ecm package, USBH CDC-ECM Class Driver, since its release.


2.10. (2020-01-31, 15:40):

  • Connection to device failed when external buffers are used.

2.9. (2019-12-13, 16:25):

  • File config_usbh_cdcecm.h included in api_usbh_cdcecm.h since configuration option is used here.

2.8r2 (2018-08-29, 18:18):

  • Document HTML link added to the documentation folder.
  • History and document files renamed to the package name.

2.8. (2017-07-05, 16:28):

  • Data reception might have stopped after disconnection followed by reconnection if USBH_CDCECM_EXTERNAL_BUF == 1.
  • Transmission of frames with the size of the multiple of the endpoint maximum packet size was not terminated correctly.


  • Added support for using external (user-provided) Rx buffers.


  • Upper case characters in MAC addresses were handled incorrectly.


  • Updated to work with USB host base major version 3.


  • psp_endianness.h used instead of psp_endiness.h.
  • usbh_utils version number check removed.


  • Needless version checks removed from api header file.
  • Notification codes changed from enum to #define.
  • All notification callbacks are cast to (void) to avoid warnings this is required because notification functions return an error code.


  • Send will return USBH_ERR_INVALID_SIZE in case length is zero.


  • OAL resource initialization changed. It will free resources from init in case of failure.