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esp-idf/examples/peripherals/i2c/i2c_basic/main/Kconfig.projbuild

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menu "Example Configuration"
orsource "$IDF_PATH/examples/common_components/env_caps/$IDF_TARGET/Kconfig.env_caps"
config I2C_MASTER_SCL
int "SCL GPIO Num"
range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
default 4
help
GPIO number for I2C Master clock line.
config I2C_MASTER_SDA
int "SDA GPIO Num"
range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
default 5
help
GPIO number for I2C Master data line.
config I2C_MASTER_FREQUENCY
int "Master Frequency"
default 400000
help
I2C Speed of Master device.
endmenu