Modify BLheli_s for custom ESC control -- 2

BLHeli_s is opensource ESC (electronic speed controller) firmware. Modify the code so that it runs a very simplified version of DSHOT150. Basically I just want it to take a "dshot" code of 48 (full reverse) to 1047 (full stop) to 2047 (full forward). All other code / features should be removed. Code should be uploadable to SiLabs ESCs (specifically to be tested on a SPEDIX ES25). Deliverable will be commented source code and compiled code ready to upload to SPEDIX ESC (BB21 MCU) for testing. Example Arduino source code will be provided from me to generate waveforms for replicating the input to the speed controller if desired (runs on a Adafruit M4 arduino board). BLHELI_s code is available on github and is written in .ASM.