sdmmc_host_set_bus_width() function

Select bus width to be used for data transfer SD/MMC card must be initialized prior to this command, and a command to set bus width has to be sent to the card (e.g. SD_APP_SET_BUS_WIDTH)

Syntax

Show:

Summary

Declaration

Definition

from sdmmc_host.h:115

esp_err_t sdmmc_host_set_bus_width(int slot, size_t width);

Implemented in sdmmc_host.c:943

Arguments

Argument

Description

slot

slot number (SDMMC_HOST_SLOT_0 or SDMMC_HOST_SLOT_1)

width

bus width (1, 4, or 8 for slot 0; 1 or 4 for slot 1)

Return value

- ESP_OK on success - ESP_ERR_INVALID_ARG if slot number or width is not valid

Notes

This function is not thread safe

Examples

sdmmc_host_set_bus_width() is referenced by 7 libraries and example projects:

References

from examples

sdmmc_host_set_bus_width() function

Syntax

Arguments

Return value

Notes

Examples

References

Call Tree

Data Use

Class Tree

Override Tree

Implementations

Instances

Lifecycle