Aug 18, 2019 · char char_array[str_len]; is local to the function - it is created on function entry and its memory is released on function exit. The contents of that memory are undefined once it has …

I get serial data from the console and store it in a char array called "data". Then, when I send a new console message to the Arduino, I want it to clear the existing "data" array and store only …

Feb 14, 2020 · What kind of function can I use to know how many elements are in an array char? sizeof() gives the number of 'spaces' available so it doesn't work for me.

How to get char array's length Ask Question Asked 5 years, 10 months ago Modified 5 years, 10 months ago

The original array is just an array of pointers to char arrays in memory, so passing one of these pointers to a function works fine. The culprite was actually my float parameter, I was trying to …

Feb 10, 2021 · It’s recommended to only use char for storing characters. For an unsigned, one-byte (8 bit) data type, use the byte data type. So size wise an array of chars and unsigned …

Mar 26, 2020 · I have started learning about Arduino and am well versed in Java and Python. In an Arduino program, I need a character input via Serial to be stored in a String variable.

Jul 29, 2021 · I have, one program with only using printing array and other with serial write and print function for the array, while using serial write and print function I get these extra …

Aug 20, 2018 · const char* book[amtBooks] is an array of pointers. "" is an array of chars (with only a NUL character). You can initialize an array of chars with an array of chars: const char …

char PROGMEM bitmap[] = {0xD7,0xED,0xEF,0xFF,0xF6,0xEF,0xFE}; However, I receive this char array from a string, which is basically: String input = …