OVMS3-idf/examples/peripherals/sdio/host/main/Kconfig.projbuild

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menu "Example Configuration"
config SDIO_EXAMPLE_4BIT
bool "Host tries using 4-bit mode to communicate with slave"
default n
help
If this is set, the host tries using 4-bit mode to communicate with
slave. If failed, the communication falls back to 1-bit mode.
If this is not set, the host uses 1-bit mode. However, CMD1 is still
mandatory for interrupts.
Note that 4-bit mode is not compatible (by default) if the slave is
using 3.3V flash which requires a pull-down on the MTDI pin.
config SDIO_EXAMPLE_HIGHSPEED
bool "Host tries using HS mode to communicate with slave"
default y
help
If this is set, the host tries using high-speed mode to communicate
with slave. If the slave doesn't support high-speed mode, the
communication falls back to default-speed mode. If this is not set,
the host uses DS mode.
If the example does not work, please try disabling the HS mode.
choice EXAMPLE_SLAVE
prompt "Id of Slave used in Espressif master-slave board."
default EXAMPLE_SLAVE_NONE
help
If Espressif master-slave board is used, select which slave is used.
config EXAMPLE_SLAVE_NONE
bool "Not using Espressif master-slave board."
config EXAMPLE_SLAVE_B1
bool "Using slave B1"
config EXAMPLE_SLAVE_B2
bool "Using slave B2"
config EXAMPLE_SLAVE_B3
bool "Using slave B3"
endchoice
endmenu