Bit banging is software emulation of a communication protocol or digital waveform (PWM, etc). Using the 'bit-bang' label applies when software was written to im

Bit banging is software emulation of a communication protocol or digital waveform (PWM, etc). Using the 'bit-bang' label applies when software was written to implement the waveform. If its using a cpu, or co-processor, is irrelevant IMO because in either case instruction are still being executed to generate the waveform.