Altered the CDC Deivice and Host Class drivers' receive byte routines, so that no data is indicated by a negative return value.

Added auto flushing of OUT data to the CDC Host Class driver's USBTask function to automatically flush the send pipe buffer.

2 files changed, 12 insertions, 0 deletions

diff --git a/LUFA/ManPages/ChangeLog.txt b/LUFA/ManPages/ChangeLog.txt
index c410ca6d8..b234bfcbe 100644
--- a/LUFA/ManPages/ChangeLog.txt
+++ b/LUFA/ManPages/ChangeLog.txt
@@ -41,6 +41,8 @@
   *  - Internal USB driver source files renamed and moved to ease future possible architecture ports
   *  - All internal pseudo-function macros have been converted to true inline functions for type-safety and readability
   *  - Changed LED indicator masks for the AVRISP-MKII project, so that there are defined roles for each LED
+  *  - Altered the CDC Deivice and Host Class drivers' receive byte routines, so that no data is indicated by a negative return value
+  *  - Added auto flushing of OUT data to the CDC Host Class driver's USBTask function to automatically flush the send pipe buffer
   *
   *  <b>Fixed:</b>
   *  - Fixed AVRISP project sending a LOAD EXTENDED ADDRESS command to 128KB AVRs after programming or reading from
diff --git a/LUFA/ManPages/MigrationInformation.txt b/LUFA/ManPages/MigrationInformation.txt
index d3453326c..2a0d0c533 100644
--- a/LUFA/ManPages/MigrationInformation.txt
+++ b/LUFA/ManPages/MigrationInformation.txt
@@ -32,6 +32,16 @@
  *      enhanced \ref USB_Device_SendRemoteWakeup() function. Existing code may now discard any checks to USB_Device_IsRemoteWakeupSent().
  *    - The USB_Device_IsUSBSuspended() macro has been removed, as it is obsolete. Existing code should compare \ref USB_DeviceState
  *      to see if it the device is in the \ref DEVICE_STATE_Suspended state instead.
+ *    - The \ref CDC_Device_ReceiveByte() function has changed, and now returns a signed 16-bit integer, with -1 indicating no data was
+ *      received. This allows for more efficient coding, as a call to \ref CDC_Device_BytesReceived() is no longer needed if the exact
+ *      number of queued bytes received is not needed.
+ *
+ *  <b>Host Mode</b>
+ *    - The \ref CDC_Host_ReceiveByte() function has changed, and now returns a signed 16-bit integer, with -1 indicating no data was
+ *      received. This allows for more efficient coding, as a call to \ref CDC_Device_BytesReceived() is no longer needed if the exact
+ *      number of queued bytes received is not needed.
+ *    - The \ref CDC_Host_USBTask() now calls \ref CDC_Host_Flush() automatically, flushing any queued data to the attached device. Manual
+ *      flushing of the interface is no longer needed if the flushes should be in sync with calls to \ref CDC_Host_USBTask().
  *
  * \section Sec_Migration100513 Migrating from 100219 to 100513
  *