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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_apptrace_vprintf_to()

esp_apptrace_vprintf_to() function

vprintf-like function to send log messages to host via specified HW interface.

Syntax

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Summary

Declaration

Definition

from esp_app_trace.h:93

int esp_apptrace_vprintf_to(esp_apptrace_dest_t dest, uint32_t tmo, const char *fmt, va_list ap);

Implemented in app_trace.c:303

Arguments

Argument

Description

dest

Indicates HW interface to send data.

tmo

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

fmt

Address of format string.

List of arguments.

Return value

Number of bytes written.

References

Code

Location

Referrer

int esp_apptrace_vprintf_to(esp_apptrace_dest_t dest, uint32_t user_tmo, const char *fmt, va_list ap)

app_trace.c:303

int esp_apptrace_vprintf_to(esp_apptrace_dest_t dest, uint32_t tmo, const char *fmt, va_list ap);

esp_app_trace.h:93

return esp_apptrace_vprintf_to(ESP_APPTRACE_DEST_JTAG, 0, fmt, ap);

app_trace.c:370

esp_apptrace_vprintf()

Call Tree

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

esp_apptrace_vprintf()

esp_apptrace_vprintf_to()

esp_apptrace_tmo_init()

esp_apptrace_hw_t::get_up_buffer

esp_apptrace_hw_t::put_up_buffer

esp_rom_printf()

esp_log_early_timestamp()

esp_apptrace_log_lock()

esp_apptrace_log_unlock()

Data Use

esp_apptrace_vprintf_to() reads 11 variables:

esp_log_level_t::ESP_LOG_ERROR

esp_log_level_t::ESP_LOG_DEBUG

esp_log_level_t::ESP_LOG_VERBOSE

esp_apptrace_dest_t::ESP_APPTRACE_DEST_MAX

TAG

esp_apptrace_channel_t::hw

esp_apptrace_channel_t::hw_data

s_trace_channels

s_inited

esp_apptrace_hw_t::get_up_buffer

esp_apptrace_hw_t::put_up_buffer

esp_apptrace_vprintf_to()

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