Espressif ESP32-S2 Programming Manual page 273

Chapter 2. API Reference
GPIO_NUM_41 = 41
GPIO41, input and output
GPIO_NUM_42 = 42
GPIO42, input and output
GPIO_NUM_43 = 43
GPIO43, input and output
GPIO_NUM_44 = 44
GPIO44, input and output
GPIO_NUM_45 = 45
GPIO45, input and output
GPIO_NUM_46 = 46
GPIO46, input mode only
GPIO_NUM_MAX
enum gpio_int_type_t
Values:
GPIO_INTR_DISABLE = 0
Disable GPIO interrupt
GPIO_INTR_POSEDGE = 1
GPIO interrupt type : rising edge
GPIO_INTR_NEGEDGE = 2
GPIO interrupt type : falling edge
GPIO_INTR_ANYEDGE = 3
GPIO interrupt type : both rising and falling edge
GPIO_INTR_LOW_LEVEL = 4
GPIO interrupt type : input low level trigger
GPIO_INTR_HIGH_LEVEL = 5
GPIO interrupt type : input high level trigger
GPIO_INTR_MAX
enum gpio_mode_t
Values:
GPIO_MODE_DISABLE = GPIO_MODE_DEF_DISABLE
GPIO mode : disable input and output
GPIO_MODE_INPUT = GPIO_MODE_DEF_INPUT
GPIO mode : input only
GPIO_MODE_OUTPUT = GPIO_MODE_DEF_OUTPUT
GPIO mode : output only mode
GPIO_MODE_OUTPUT_OD = ((GPIO_MODE_DEF_OUTPUT) | (GPIO_MODE_DEF_OD))
GPIO mode : output only with open-drain mode
GPIO_MODE_INPUT_OUTPUT_OD = ((GPIO_MODE_DEF_INPUT) | (GPIO_MODE_DEF_OUTPUT) | (GPIO_MODE_D
GPIO mode : output and input with open-drain mode
GPIO_MODE_INPUT_OUTPUT = ((GPIO_MODE_DEF_INPUT) | (GPIO_MODE_DEF_OUTPUT))
GPIO mode : output and input mode
enum gpio_pullup_t
Values:
GPIO_PULLUP_DISABLE = 0x0
Disable GPIO pull-up resistor
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