Set chirp setting using ping1d library

what is the function called to set the chirp setting enabled using ping 1d library?
for example set_mode_auto[1] makes auto mode enabled,
set_ping_interval(100) sets 10Hz ping frequency.

I don’t believe that library supports chirp.

O ,I am facing issues how to set chirp in shallow waters using python script. Can I request for a library if that can be made?