History: usbh_cd_printer

This page describes all changes made to the usbh_cd_printer package, the USB Host Printer Class Driver, since its release.

Version

2.7:

• Get Device ID command was sent erroneously to printers having multiple USB interfaces if the printer interface was not the first interface.

2.6:

• Get Device ID command fixed as it failed with some printer devices.
• PDLs (ESC/POS, PCL5) removed from printer class driver.

2.5:

• Added support for ESC/POS type printers.
• Unified version numbers with PCL5.

PCL5 earlier version changes:

      2.2:

          - Negative parameters were handled incorrectly.

      2.1:

          - PCL5_SUCCESS and PCL5_ERR_BUF_FULL error codes introduced for all the functions.

          - pcl5_errno removed.

2.4:

• Updated to work with USB host major number 3.

2.3:

• usbh_utils version number check removed.

2.2:

• Added the option to support multiple printers.

2.1:

• Needless version checks removed from API header file.
• All notification callbacks are cast to (void) to avoid warnings. This is required because notification functions return an error code.