Hi, I have a question about Atmel 8-bit AVR coding, so if you know the subject please help me!

Please if you can, write code that will output an arbitrary string by blinking the LED(LED of the AVR Microcontroller board) in Morse code. The method you choose must output any standard null-terminated string containing characters A-Z or 0-9 in Morse code on the board's LED. For the demo, a child function, called from main( ) should output the string in Morse code, using a method that will work for any arbitrary string constant (in other words, main should pass the address of the null-terminated ASCII string to the child function) The program is recommended to have different functions for dot, dash, and spacing. (The functions can be called based on the desired output.)