esp_log_util_cvt() function

Convert an unsigned integer value to a string representation in the specified radix. This function converts the given unsigned integer value to a string representation in the specified radix. The resulting string is stored in the provided character buffer `buf`.

Syntax

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Summary

Declaration

Definition

from log_util.h:39

int esp_log_util_cvt(unsigned long long val, long radix, int pad, const char *digits, char *buf);

Implemented in util.c:9

Arguments

Argument

Description

val

The unsigned integer value to be converted.

radix

The base of the numeral system to be used for the conversion. It determines the number of unique digits in the numeral system (e.g., 2 for binary, 10 for decimal, 16 for hexadecimal).

pad

The optional padding width (0 - unused) for the resulting string. It adds zero-padding. (val=123, pad=6 -> result=000123).

digits

Pointer to a character array representing the digits of the numeral system. The array must contain characters in the order of increasing values, corresponding to the digits of the radix. For example, "0123456789ABCDEF" or hexadecimal.

buf

Pointer to the character buffer where the resulting string will be stored. The buffer must have enough space to accommodate the entire converted string, including the null-terminator.

Return value

The length of the resulting string (excluding the null-terminator).

Notes

The buffer `buf` must have sufficient space to hold the entire converted string, including the null-terminator. The caller is responsible for ensuring the buffer's size is large enough to prevent buffer overflow. The provided `digits` array must have enough elements to cover the entire radix used for conversion. Otherwise, undefined behavior may occur.

Examples

References

from examples

esp_log_util_cvt() function

Syntax

Arguments

Return value

Notes

Examples

References

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