miceblue_Custom_C5D_Firmware.ino

This will allow the C5D to have 5 modes of operation:

Mode 1) DAC circuit "off", low gain, volume change via potentiometer, solid LED, press gain to switch to next mode
Mode 2) DAC circuit "off", high gain, volume change via potentiometer, blinking LED, press gain to switch to next mode
Mode 3) DAC circuit on, low gain, volume change via potentiometer, faster blinking LED, press gain to switch to next mode
Mode 4) DAC circuit on, high gain, volume change via potentiometer, even faster blinking LED, press gain to switch to next mode
Mode 5) DAC circuit on, high gain, DAC filter change via potentiometer (volume down = brickwall DAC filter; volume up = low-latency DAC filter (which is the default)), fastest-blinking LED, press gain to switch back to mode 3