esp-idf/examples/peripherals/spi_master/hd_eeprom/main/Kconfig.projbuild

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menu "Example Configuration"
config EXAMPLE_USE_SPI1_PINS
bool "The example uses SPI1 shared pins for EEPROM connection"
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default n
depends on SPI_FLASH_SHARE_SPI1_BUS
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help
Enable this option will make the EEPROM use SPI1 pins, which is shared with the main
flash chip.
Currently this example hasn't supported SPI1 pins on other chips yet.
config EXAMPLE_INTR_USED
bool "Use the interrupt to detect the eeprom busy"
default y
depends on !EXAMPLE_USE_SPI1_PINS
help
Enable this option will allow the example to be blocked while the EEPROM is working
in progress, and unblocked by GPIO interrupt. Otherwise the example will keep polling
until the EEPROM is idle.
config EXAMPLE_5V_COMMANDS
bool "The EEPROM is supplied by 5V power"
default n
help
The Erase_All and Write_All commands of EEPROM are only supported when EEPROM is
supplied by 5V power. Enable this to use those two commands.
But please note that ESP chips don't support 5V IO, you need to add external
level-shifting circuits between ESP chip to the EEPROM.
endmenu