Developing a StreamBuffer USB virtual COM port

VirtualComDriver.c is located in the top-level Drivers folder (since we're likely to use it in a future chapter). It is available here: https://github.com/PacktPublishing/Hands-On-RTOS-with-Microcontrollers/tree/master/Drivers/HandsOnRTOS/

First, we'll walk through each of the functions that have been created, and their purpose.

Public functions

VirtualComDriver.c currently has three publicly available functions:

• TransmitUsbDataLossy
• TransmitUsbData
• VirtualCommInit

TransmitUsbDataLossy is simply a wrapper around a stream buffer function call. It uses an ISR-safe variant, which is guaranteed not to block (but may also not copy all data into the buffer). The number...