sdmmc_host_get_real_freq() function

Provides a real frequency used for an SD card installed on specific slot of SD/MMC host controller This function calculates real working frequency given by current SD/MMC host controller setup for required slot: it reads associated host and card dividers from corresponding SDMMC registers, calculates respective frequency and stores the value into the 'real_freq_khz' parameter

Syntax

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Summary

Declaration

Definition

from sdmmc_host.h:255

esp_err_t sdmmc_host_get_real_freq(int slot, int* real_freq_khz);

Implemented in sdmmc_host.c:339

Arguments

Argument

Description

slot

slot number (SDMMC_HOST_SLOT_0 or SDMMC_HOST_SLOT_1)

real_freq_khz

output parameter for the result frequency (in kHz)

Return value

- ESP_OK on success - ESP_ERR_INVALID_ARG on real_freq_khz == NULL or invalid slot number used

Examples

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

References

from examples

sdmmc_host_get_real_freq() function

Syntax

Arguments

Return value

Examples

References

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