ESP-IDF
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Outline
#include <stdio.h>
#include <stdlib.h>
#include "esp_log.h"
#include "esp_attr.h"
#define VPRINTF_STACK_BUFFER_SIZE
lib_printf(const char *, const char *, va_list)
phy_printf(const char *, ...)
rtc_printf(const char *, ...)
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_phy/src/lib_printf.c
 
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/* * SPDX-FileCopyrightText: 2016-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ /** * @file lib_printf.c * * This file contains library-specific printf functions * used by WiFi libraries in the `lib` directory. * These function are used to catch any output which gets printed * by libraries, and redirect it to ESP_LOG macros. * * Eventually WiFi libraries will use ESP_LOG functions internally * and these definitions will be removed. *//* ... */ #include <stdio.h> #include <stdlib.h> #include "esp_log.h" #include "esp_attr.h" #define VPRINTF_STACK_BUFFER_SIZE 80 static int lib_printf(const char* tag, const char* format, va_list arg) { char temp[VPRINTF_STACK_BUFFER_SIZE]; int len = vsnprintf(temp, sizeof(temp) - 1, format, arg); temp[sizeof(temp) - 1] = 0; int i; for (i = len - 1; i >= 0; --i) { if (temp[i] != '\n' && temp[i] != '\r' && temp[i] != ' ') { break; }{...} temp[i] = 0; }{...} if (i > 0) { ESP_LOGI(tag, "%s", temp); }{...} va_end(arg); return len; }{ ... } int phy_printf(const char* format, ...) { va_list arg; va_start(arg, format); int res = lib_printf("phy", format, arg); va_end(arg); return res; }{ ... } int rtc_printf(const char* format, ...) { va_list arg; va_start(arg, format); int res = lib_printf("rtc", format, arg); va_end(arg); return res; }{ ... }
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