main.c File Reference

Conway's game of life in a UART terminal. More...

#include <neorv32.h>

Macros
User configuration
#define	BAUD_RATE   (19200)
#define	NUM_CELLS_X   (160)
#define	NUM_CELLS_Y   (40)
#define	GEN_DELAY   (500)
#define	CELL_DEAD   (' ')
#define	CELL_ALIVE   ('#')

Functions
void	clear_universe (int u)
void	set_cell (int u, int x, int y)
int	get_cell (int u, int x, int y)
int	get_neighborhood (int u, int x, int y)
void	print_universe (int u)
int	pop_count (int u)
void	delay_ms (uint32_t time_ms)
int	main (void)

Variables
uint8_t	universe [2][NUM_CELLS_X/8][NUM_CELLS_Y]

Detailed Description

Conway's game of life in a UART terminal.

Macro Definition Documentation

BAUD_RATE

#define BAUD_RATE   (19200)

UART BAUD rate

CELL_ALIVE

#define CELL_ALIVE   ('#')

Symbol for alive cell

CELL_DEAD

#define CELL_DEAD   (' ')

Symbol for dead cell

GEN_DELAY

#define GEN_DELAY   (500)

Delay between generations in ms

NUM_CELLS_X

#define NUM_CELLS_X   (160)

Universe x size (has to be a multiple of 8)

NUM_CELLS_Y

#define NUM_CELLS_Y   (40)

Universe y size

Function Documentation

clear_universe()

void clear_universe

(

int

u

)

Kill all cells in universe.

Parameters

[in]

u

Universe select (0 or 1).

delay_ms()

void delay_ms

(

uint32_t

time_ms

)

Simple bus-wait helper.

Parameters

[in]

time_ms

Time in ms to wait (unsigned 32-bit).

get_cell()

int get_cell	(	int	u,
		int	x,
		int	y )

Get state of cell.

Parameters

[in]	u	Universe select (0 or 1).
[in]	x	X coordinate of cell.
[in]	y	Y coordinate of cell.

Returns

Cell is dead when 0, cell is alive when 1.

get_neighborhood()

int get_neighborhood	(	int	u,
		int	x,
		int	y )

Get number of living cells in neighborhood.

Parameters

[in]	u	Universe select (0 or 1).
[in]	x	X coordinate of the neighborhood's center cell.
[in]	y	Y coordinate of the neighborhood's center cell.

Returns

Number of living cells in neighborhood (0..9).

main()

int main

(

void

)

Conway's Game of Life.

Note

This program requires the UART to be synthesized (the TRNG is optional).

Returns

0 if execution was successful

pop_count()

int pop_count

(

int

u

)

Count living cells in universe.

Parameters

[in]

u

Universe select (0 or 1).

Returns

Number of living cells.

print_universe()

void print_universe

(

int

u

)

Print universe via UARt.

Parameters

[in]

u

Universe select (0 or 1).

set_cell()

void set_cell	(	int	u,
		int	x,
		int	y )

Make cell alive.

Parameters

[in]	u	Universe select (0 or 1).
[in]	x	X coordinate of cell.
[in]	y	Y coordinate of cell.

Variable Documentation

universe

uint8_t universe[2][NUM_CELLS_X/8][NUM_CELLS_Y]

The universe