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SourceVuESP-IDF Framework and ExamplesESP-IDFadc1_dma_mode_acquire()

adc1_dma_mode_acquire() function

For I2S dma to claim the usage of ADC1. Other tasks will be forbidden to use ADC1 between ``adc1_dma_mode_acquire`` and ``adc1_i2s_release``. The I2S module may have to wait for a short time for the current conversion (if exist) to finish.

Syntax

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Summary

Declaration

Definition

from adc1_private.h:25

esp_err_t adc1_dma_mode_acquire(void);

Implemented in adc_legacy.c:340

Return value

- ESP_OK success - ESP_ERR_TIMEOUT reserved for future use. Currently the function will wait until success.

References

Code

Location

Referrer

esp_err_t adc1_dma_mode_acquire(void)

adc_legacy.c:340

esp_err_t adc1_dma_mode_acquire(void);

adc1_private.h:25

adc1_dma_mode_acquire();

i2s_legacy.c:976

i2s_adc_enable()

Call Tree

adc1_dma_mode_acquire() is called by 1 function and calls 7 functions:

i2s_adc_enable()

adc1_dma_mode_acquire()

adc_ll_set_controller()

sar_periph_ctrl_adc_continuous_power_acquire()

_lock_acquire()

Data Use

adc1_dma_mode_acquire() reads 8 variables:

esp_log_level_t::ESP_LOG_ERROR

esp_log_level_t::ESP_LOG_WARN

esp_log_level_t::ESP_LOG_INFO

esp_log_level_t::ESP_LOG_DEBUG

esp_log_level_t::ESP_LOG_VERBOSE

adc_unit_t::ADC_UNIT_1

adc_ll_controller_t::ADC_LL_CTRL_DIG

ADC_TAG

adc1_dma_mode_acquire()

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