SDMMC slot configuration. More...

Detailed Description

SDMMC slot configuration.

If the ESP32x variant uses the GPIO matrix to route the SDMMC signals to arbitrary pins (i.e. SOC_SDMMC_USE_GPIO_MATRIX is defined in SoC capabilities file), the pins must be configured. The bus width is then determined from the defined pins. Define the pins for the DAT lines as GPIO_UNDEF to use a smaller data bus width. If the ESP32x variant uses direct I/O (i.e. SOC_SDMMC_USE_IOMUX is defined in SoC capabilities file), the bus width has to be specified instead.

Definition at line 704 of file periph_cpu.h.

#include <periph_cpu.h>

Data Fields
sdmmc_slot_t	slot
	SDMMC slot used [ SDMMC_SLOT_0 \| SDMMC_SLOT_1].

gpio_t	cd
	Card Detect pin (must be GPIO_UNDEF if not connected)

gpio_t	wp
	Write Protect pin (must be GPIO_UNDEF if not connected)

gpio_t	clk
	CLK pin (must be defined)

gpio_t	cmd
	CMD pin (must be defined)

gpio_t	dat0
	DAT[0] pin (must be defined)

gpio_t	dat1
	DAT[1] pin (GPIO_UNDEF if not connected)

gpio_t	dat2
	DAT[2] pin (GPIO_UNDEF if not connected)

gpio_t	dat3
	DAT[3] pin (GPIO_UNDEF if not connected)

gpio_t	dat4
	DAT[4] pin (GPIO_UNDEF if not connected)

gpio_t	dat5
	DAT[5] pin (GPIO_UNDEF if not connected)

gpio_t	dat6
	DAT[6] pin (GPIO_UNDEF if not connected)

gpio_t	dat7
	DAT[7] pin (GPIO_UNDEF if not connected)

The documentation for this struct was generated from the following file:

cpu/esp32/include/periph_cpu.h

Detailed Description

Data Fields