Pixel

Functions
int8_t	dog_draw_pixel (uint8_t row, uint8_t col, char mode)

Detailed Description

This file contains the function prototype for the dog_draw_pixel() function.

Function Documentation

int8_t dog_draw_pixel	(	uint8_t	row,
		uint8_t	col,
		char	mode
	)

This function is used to set an individual pixel on the screen.

Parameters

• row = The desired row to place the pixel (0-63)
• col = The desired column to place the pixel (0-127)
• mode = 's' for set, 'c' for clear

Algorithm

• Ensures that the provided row and column are within range. It then computes the which page the pixel will be placed on and where within that page. It then either sets or clears the pixel depending on the mode

Assumptions

• None

Returns

• 0 upon sucessful completion
• -1 in case of an out of range row
• -2 in case of an out of range column
• -3 in case of invalid mode character