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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_apptrace_down_buffer_get()

esp_apptrace_down_buffer_get() function

Retrieves incoming data buffer if any. Once data in the buffer is processed, esp_apptrace_down_buffer_put must be called to indicate it.

Syntax

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Summary

Declaration

Definition

from esp_app_trace.h:149

uint8_t *esp_apptrace_down_buffer_get(esp_apptrace_dest_t dest, uint32_t *size, uint32_t tmo);

Implemented in app_trace.c:110

Arguments

Argument

Description

dest

Indicates HW interface to receive data.

size

Address to store size of available data in down buffer. Must be initialized with requested value.

tmo

Timeout for operation (in us). Use ESP_APPTRACE_TMO_INFINITE to wait indefinitely.

Return value

non-NULL on success, otherwise NULL.

References

Code

Location

uint8_t *esp_apptrace_down_buffer_get(esp_apptrace_dest_t dest, uint32_t *size, uint32_t user_tmo)

app_trace.c:110

uint8_t *esp_apptrace_down_buffer_get(esp_apptrace_dest_t dest, uint32_t *size, uint32_t tmo);

esp_app_trace.h:149

Call Tree

esp_apptrace_down_buffer_get() calls 6 functions:

esp_apptrace_down_buffer_get()

esp_apptrace_tmo_init()

esp_apptrace_hw_t::get_down_buffer

esp_rom_printf()

esp_log_early_timestamp()

esp_apptrace_log_lock()

esp_apptrace_log_unlock()

Data Use

esp_apptrace_down_buffer_get() reads 9 variables:

esp_log_level_t::ESP_LOG_ERROR

esp_log_level_t::ESP_LOG_VERBOSE

esp_apptrace_dest_t::ESP_APPTRACE_DEST_MAX

esp_apptrace_hw_t::get_down_buffer

TAG

esp_apptrace_channel_t::hw

esp_apptrace_channel_t::hw_data

s_trace_channels

s_inited

esp_apptrace_down_buffer_get()

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