Espressif ESP32-S2 User Manual

Chapter 2. API Reference
CONFIG_BOOTLOADER_FACTORY_RESET
GPIO triggers factory reset
Found in: Bootloader config
Allows to reset the device to factory settings: - clear one or more data partitions; - boot from “factory”
partition. The factory reset will occur if there is a GPIO input held at the configured level while device
starts up. See settings below.
Default value:
• No (disabled)
CONFIG_BOOTLOADER_NUM_PIN_FACTORY_RESET
Number of the GPIO input for factory reset
Found in: Bootloader config > CONFIG_BOOTLOADER_FACTORY_RESET
The selected GPIO will be configured as an input with internal pull-up enabled (note that on some SoCs.
not all pins have an internal pull-up, consult the hardware datasheet for details.) To trigger a factory
reset, this GPIO must be held high or low (as configured) on startup.
Range:
• from 0 to 44 if CONFIG_BOOTLOADER_FACTORY_RESET
Default value:
• 4 if CONFIG_BOOTLOADER_FACTORY_RESET
CONFIG_BOOTLOADER_FACTORY_RESET_PIN_LEVEL
Factory reset GPIO level
Found in: Bootloader config > CONFIG_BOOTLOADER_FACTORY_RESET
Pin level for factory reset, can be triggered on low or high.
Available options:
• Reset on GPIO low (BOOTLOADER_FACTORY_RESET_PIN_LOW)
• Reset on GPIO high (BOOTLOADER_FACTORY_RESET_PIN_HIGH)
CONFIG_BOOTLOADER_OTA_DATA_ERASE
Clear OTA data on factory reset (select factory partition)
Found in: Bootloader config > CONFIG_BOOTLOADER_FACTORY_RESET
The device will boot from “factory”partition (or OTA slot 0 if no factory partition is present) after a
factory reset.
CONFIG_BOOTLOADER_DATA_FACTORY_RESET
Comma-separated names of partitions to clear on factory reset
Found in: Bootloader config > CONFIG_BOOTLOADER_FACTORY_RESET
Allows customers to select which data partitions will be erased while factory reset.
Specify the names of partitions as a comma-delimited with optional spaces for readability. (Like this:
“nvs, phy_init, …”) Make sure that the name specified in the partition table and here are the same.
Partitions of type “app”cannot be specified here.
Default value:
•“nvs”if CONFIG_BOOTLOADER_FACTORY_RESET
Espressif Systems 1064
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Espressif ESP32-S2 Specifications

General

Brand	Espressif
Model	ESP32-S2
Category	Single board computers
Language	English