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sdmmc_host_set_bus_width()
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ESP-IDF Framework and Examples
ESP-IDF
sdmmc_host_set_bus_width()
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
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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:
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