Espressif ESP32-S2 Programming Manual page 1110

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Chapter 2. API Reference
• No (disabled)
CONFIG_ESP32S2_SPIRAM_SUPPORT
Support for external, SPI-connected RAM
Found in:
Component config
This enables support for an external SPI RAM chip, connected in parallel with the main SPI flash chip.
Default value:
• No (disabled)
SPI RAM config
Contains:
CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
CONFIG_SPIRAM_FETCH_INSTRUCTIONS
CONFIG_SPIRAM_RODATA
CONFIG_SPIRAM_BOOT_INIT
CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL
PSRAM clock and cs IO for ESP32S2
CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL
CONFIG_SPIRAM_MEMTEST
CONFIG_SPIRAM_SPEED
CONFIG_SPIRAM_USE
CONFIG_SPIRAM_TRY_ALLOCATE_WIFI_LWIP
CONFIG_SPIRAM_TYPE
CONFIG_SPIRAM_TYPE
Type of SPI RAM chip in use
Found in:
Component config
config
Available options:
• Auto-detect (SPIRAM_TYPE_AUTO)
• ESP-PSRAM16 or APS1604 (SPIRAM_TYPE_ESPPSRAM16)
• ESP-PSRAM32 or IS25WP032 (SPIRAM_TYPE_ESPPSRAM32)
• ESP-PSRAM64 or LY68L6400 (SPIRAM_TYPE_ESPPSRAM64)
PSRAM clock and cs IO for ESP32S2
CONFIG_DEFAULT_PSRAM_CLK_IO
CONFIG_DEFAULT_PSRAM_CS_IO
CONFIG_DEFAULT_PSRAM_CLK_IO
PSRAM CLK IO number
Found in:
Component config
config
>
PSRAM clock and cs IO for ESP32S2
The PSRAM CLOCK IO can be any unused GPIO, user can config it based on hardware design.
Range:
• from
0
FIG_ESP32S2_SPIRAM_SUPPORT
Default value:
• 30 if
CONFIG_ESP32S2_SPIRAM_SUPPORT
Espressif Systems
>
ESP32S2-specific
>
ESP32S2-specific
>
CONFIG_ESP32S2_SPIRAM_SUPPORT
Contains:
>
ESP32S2-specific
>
CONFIG_ESP32S2_SPIRAM_SUPPORT
to
33
if
CONFIG_ESP32S2_SPIRAM_SUPPORT
1099
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&&
CONFIG_ESP32S2_SPIRAM_SUPPORT
>
SPI RAM
>
SPI RAM
&&
CON-
Release v4.4

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