Here is a list of all struct and union fields with links to the structures/unions they belong to:

chip_select : ultrasonic3_t
cs : ultrasonic3_cfg_t
cs_polarity : ultrasonic3_cfg_t
dev_pwm_freq : ultrasonic3_cfg_t
int_pin : ultrasonic3_cfg_t
int_pin_in : ultrasonic3_t
int_pin_name : ultrasonic3_t
int_pin_out : ultrasonic3_t
miso : ultrasonic3_cfg_t
mosi : ultrasonic3_cfg_t
pwm : ultrasonic3_cfg_t, ultrasonic3_t
pwm_freq : ultrasonic3_t
sck : ultrasonic3_cfg_t
spi : ultrasonic3_t
spi_mode : ultrasonic3_cfg_t
spi_speed : ultrasonic3_cfg_t