如何在 Arduino 中将字符串打印为十六进制字节序列

以下代码将 std::string 打印到 Serial 作为十六进制字符序列。它可以轻松地适配以与其他类型的字符串一起工作。

print_string_hex_arduino.cpp

const char* cstr = str.c_str();
for (size_t i = 0; i < str.size(); i++)
{
    Serial.printf("%02X ", cstr[i]);
}

const char* cstr = str.c_str();
for (size_t i = 0; i < str.size(); i++)
{
    Serial.printf("%02X ", cstr[i]);
}

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