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