Porting USB/MTP Driver from Teensy 3.5 to LPC4330

Our company is [login to view URL], we sell controllers for CNC machines that run the Open-Source Smoothieware firmware. We also contribute to the continued development of the firmware, and are participating in the elaboration of the version 2 of the board and firmware for the Smoothieware project. As part of this, the project is aiming to move from USB/MSD to USB/MTP ( the same way Android did a while back ). We need the following USB/MTP driver: [login to view URL] to be ported from it's the original platform ( Teensy 3.5 ) to our firmware ( Smoothie v2, using LPCOpen and FreeRTOS): [login to view URL] USB/MTP will be used to offer users access to files on the SD card ( using SDIO access, SDIO access to files is already implemented in our firmware ). Additionally, the driver must support composite USB offering to the host both USB/CDC ( Serial ) and USB/MTP ( Media Transfer ) on the same USB port ( USB/Serial is already implemented in our firmware ). Once ported, the following functionality is expected : * User plugs the board into their computer's USB port * On systems where USB/MTP is supported, this gives the user access to the files on the SD card in the board ( navigation, edition, move, deletion, etc ) * The user also has access to the USB/Serial interface ( on the same USB port, simultaneously ) Before placing a bid you are expected to familiarize yourself with both the original driver and the target firmware and make sure you understand the specs for USB/MTP and the expected functionality. Details of how you plan to implement this would help to convince us you are doing to do what we need.