esp_idf_sys

Constant touch_pad_shield_driver_t_TOUCH_PAD_SHIELD_DRV_L4

Source 
pub const touch_pad_shield_driver_t_TOUCH_PAD_SHIELD_DRV_L4: touch_pad_shield_driver_t = 4;
Expand description

<The max equivalent capacitance in shield channel is 200pf