Downvoting because str() is not an Arduino function. However, String() does indeed work so kudos to Flolancu. – Kenn Sebesta. Jan 4 '18 at 12:50. ... <看更多>
You misunderstand Serial.read() : it does not return a String or sth. like a char array, but an integer, representing only the last byte in ... ... <看更多>
String Character Functions ... The String functions charAt() and setCharAt() are used to get or set the value of a character at a given position in a String. ... <看更多>
Contribute to arduino/ArduinoCore-API development by creating an account on GitHub. ... String::String(const char *cstr, unsigned int length). ... <看更多>
