Espressif ESP32-S2 Programming Manual page 442

Chapter 2. API Reference
Public Members
touch_high_volt_t upper_voltage
Touch sensor channel upper charge voltage.
touch_volt_atten_t voltage_attenuation
Touch sensor channel upper charge voltage attenuation (Diff voltage is upper - attenuation - lower)
touch_low_volt_t lower_voltage
Touch sensor channel lower charge voltage.
touch_pad_conn_type_t
Suspend channel polarity (High Impedance State or GND)
touch_pad_denoise_grade_t
Internal de-noise level.
touch_pad_denoise_cap_t
Internal de-noise channel (Touch channel 0) equivalent capacitance.
touch_smooth_mode_t
Smooth value filter mode (This only apply to touch_pad_filter_read_smooth())
touch_filter_mode_t
Benchmark filter mode.
uint16_t sample_count
The count of sample in each measurement of touch sensor.
uint16_t sleep_cycle
The cycle (RTC slow clock) of sleep.
uint8_t benchmark_debounce_count
Benchmark debounce count.
uint8_t benchmark_calibration_threshold
Benchmark calibration threshold.
uint8_t benchmark_jitter_step
Benchmark jitter filter step (This only works at while benchmark filter mode is jitter filter)
struct touch_elem_global_config_t
Touch element global configuration passed to touch_element_install.
Public Members
touch_elem_hw_config_t
Hardware configuration.
touch_elem_sw_config_t
Software configuration.
struct touch_elem_waterproof_config_t
Touch element waterproof configuration passed to touch_element_waterproof_install.
Public Members
touch_pad_t guard_channel
Waterproof Guard-Sensor channel number (index)
float guard_sensitivity
Waterproof Guard-Sensor sensitivity.
struct touch_elem_message_t
Touch element event message type from touch_element_message_receive()
Espressif Systems
suspend_channel_polarity
denoise_level
denoise_equivalent_cap
smooth_filter_mode
benchmark_filter_mode
hardware
software
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