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- menu "Example Configuration"
- orsource "$IDF_PATH/examples/common_components/env_caps/$IDF_TARGET/Kconfig.env_caps"
- choice EXAMPLE_SDIO_INTERFACE
- prompt "Interface to communicate with slave"
- default EXAMPLE_SDIO_OVER_SDMMC
- help
- There are two interfaces to communicate with the SDIO slave: SDMMC and SPI.
- The SDMMC interface is 8 times faster than the SPI interface. However not all Espressif chips have this
- interface.
- Alternatively you can use the SPI interface.
- config EXAMPLE_SDIO_OVER_SDMMC
- bool "SDMMC host"
- depends on SOC_SDMMC_HOST_SUPPORTED
- config EXAMPLE_SDIO_OVER_SPI
- bool "SPI"
- depends on IDF_TARGET_ESP32
- endchoice
- config EXAMPLE_SDIO_4BIT
- bool "Host tries using 4-bit mode to communicate with slave"
- default n
- depends on !EXAMPLE_SDIO_OVER_SPI
- 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 EXAMPLE_SDIO_HIGHSPEED
- bool "Host tries using HS mode to communicate with slave"
- default y
- depends on EXAMPLE_SDIO_OVER_SDMMC
- 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.
- config EXAMPLE_ADJUSTABLE_PIN
- bool
- default EXAMPLE_SDIO_OVER_SPI || SOC_SDMMC_USE_GPIO_MATRIX
- config EXAMPLE_PIN_CMD
- int "CMD (MOSI) GPIO number"
- depends on EXAMPLE_ADJUSTABLE_PIN
- range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
- default 15
- config EXAMPLE_PIN_CLK
- int "CLK GPIO number"
- depends on EXAMPLE_ADJUSTABLE_PIN
- range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
- default 14
- config EXAMPLE_PIN_D0
- int "D0 (MISO) GPIO number"
- depends on EXAMPLE_ADJUSTABLE_PIN
- range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
- default 2
- config EXAMPLE_PIN_D1
- int "D1 (INTR) GPIO number"
- depends on EXAMPLE_ADJUSTABLE_PIN
- range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
- default 4
- config EXAMPLE_PIN_D2
- int "D2 GPIO number"
- depends on EXAMPLE_ADJUSTABLE_PIN
- range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
- default 12
- config EXAMPLE_PIN_D3
- int "D3 (CS) GPIO number"
- depends on EXAMPLE_ADJUSTABLE_PIN
- range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
- default 13
- choice EXAMPLE_SLAVE
- prompt "GPIO to control slave EN in Espressif master-slave board."
- default EXAMPLE_SLAVE_NONE
- help
- If Espressif master-slave board is used, select the correct GPIO to control slave's EN.
- config EXAMPLE_SLAVE_NONE
- bool "Not using Espressif master-slave board."
- config EXAMPLE_SLAVE_B1
- bool "Using slave B1"
- endchoice
- config EXAMPLE_SLAVE_PWR_NEGTIVE_ACTIVE
- bool "Slave power control pin is negtive active, otherwise postive active"
- depends on !EXAMPLE_SLAVE_NONE
- default n
- help
- Slave power control pin is negtive active, otherwise postive active
- config EXAMPLE_NO_INTR_LINE
- bool "The host is not connected to the interrupt line (DAT1) of slave"
- default n
- help
- If this is set, the host example will not check the interrupt line but poll slave
- registers to see whether the slave has interrupts for the host.
- Working without the interrupt line may increase the CPU load of the host, and do harm
- to the response speed to slave events, though can save 1 GPIO for other purposes in
- non-4-bit mode.
- endmenu
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