Here are the data structures with brief descriptions:

chunk_count_u
chunk_gap_ms_u
chunk_size_ms_u
cleon_gps_data_u
cleon_header_s
cleon_header_u
cleon_sensor_data_u
DIR
FATFS
FIL
FILINFO
gps_signal_data_format_u
intermediate_frequency_u
milliseoncd_time_tick_u
receiver_setting_s
rtc_time_s
rtc_time_u
samples_per_ms_u
sensors_s
seoncd_time_tick_u
signature_u
time_measurement_s
usb_frame_s
usb_frame_u
version_u