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TTY

Functions

putChar

>> Syntax: 

uint8_t putChar(char c);

>> Description:

Displays the character c on the VGA screen at the current cursor position and adds it to the tty buffer.

>>> Functionality:

  • Displays the character c on the VGA screen at the current cursor position.
  • Adds the character and its associated color to the tty buffer.
  • Updates cursor position (X, Y) after printing the character.
  • Scrolls the screen when the cursor reaches (MAX_COLUMNS, MAX_ROWS).
  • Handles special characters:
character Represenation Terminal action
\n newline Moves the printing position to the beginning of the next line.
\r carriage return Moves the cursor to the beginning of the current line.
\t tab Advances the cursor by a tab space.
\b backspace Moves the printing position to the previous character position, unless the current position is the start of a line.
\033xx;..;xxm colors Applies text color and formatting, using ansi sequences.

>> Return Value:

  • Returns 1 if the character was successfully printed.
  • Returns 0 if the character couldn't be printed.