Espressif ESP32-S2 User Manual

Chapter 2. API Reference
CONFIG_ESP_SLEEP_POWER_DOWN_FLASH
Power down flash in light sleep when there is no SPIRAM
Found in: Component config > Hardware Settings > Sleep Config
If enabled, chip will try to power down flash as part of esp_light_sleep_start(), which costs more time
when chip wakes up. Can only be enabled if there is no SPIRAM configured. This option will in fact
consider VDD_SDIO auto power value (ESP_PD_OPTION_AUTO) as OFF. Also, it is possible to
force a power domain to stay ON during light sleep by using esp_sleep_pd_config() function.
Default value:
• Yes (enabled)
CONFIG_ESP_SLEEP_GPIO_RESET_WORKAROUND
light sleep GPIO reset workaround
Found in: Component config > Hardware Settings > Sleep Config
esp32c3 and esp32s3 will reset at wake-up if GPIO is received a small electrostatic pulse during light
sleep, with specific condition
• GPIO needs to be configured as input-mode only
• The pin receives a small electrostatic pulse, and reset occurs when the pulse voltage is higher than
6 V
For GPIO set to input mode only, it is not a good practice to leave it open/floating, The hardware design
needs to controlled it with determined supply or ground voltage is necessary.
This option provides a software workaround for this issue. Configure to isolate all GPIO pins in sleep
state.
CONFIG_ESP_SLEEP_PSRAM_LEAKAGE_WORKAROUND
PSRAM leakage current workaround in light sleep
Found in: Component config > Hardware Settings > Sleep Config
When the CS pin of SPIRAM is not pulled up, the sleep current will increase during light sleep. If the
CS pin of SPIRAM has an external pull-up, you do not need to select this option, otherwise, you should
enable this option.
CONFIG_ESP_SLEEP_FLASH_LEAKAGE_WORKAROUND
Flash leakage current workaround in light sleep
Found in: Component config > Hardware Settings > Sleep Config
When the CS pin of Flash is not pulled up, the sleep current will increase during light sleep. If the CS
pin of Flash has an external pull-up, you do not need to select this option, otherwise, you should enable
this option.
IPC (Inter-Processor Call) Contains:
• CONFIG_ESP_IPC_TASK_STACK_SIZE
• CONFIG_ESP_IPC_USES_CALLERS_PRIORITY
Espressif Systems 1113
Submit Document Feedback
Release v4.4

Espressif ESP32-S2 Specifications

General

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