Changing the sounds
Changing the sounds requires modifications to the firmware. The code for the sounds is located in sound_cf.c.
A sequences is defined in the .notes member of the Melody struct. The notes are defined as tuples of a note (pitch) and duration. A sequence must be ended with the end marker.
The effects are defined in the effects array. Each entry takes a function to call and related parameters. To add a new melody, use the melodyplayer function for the .call member and assign your Melody struct to the .melody member.
|sound.effect||uint8_t||RW||0||Sound effect (0=Off, 1=Factory test, 2=USB connected, 3=USB disconnected, 4=Charging done, 5=Low battery, 6=Startup, 7=Calibrated, 8=Range slow, 9=Range fast, 10=Star Wars Imperial March, 11=Bypass (change sound with sound.freg), 12=Siren, 13=Tilt (tilt the Crazyflie to play the sound))|
|sound.neffect||uint32_t||RO||13||Number of available sound effects|