vga_routines.h

VGA模块的VHDL代码和软件驱动

#ifndef VGA_ROUTINES_H_
#define VGA_ROUTINES_H_

#include <stddef.h>
#include <sys/alt_dma.h>
#include <alt_types.h>

#define VGA_LINE_WIDTH_LOG2 10
#define VGA_LINE_WIDTH 		(1<<VGA_LINE_WIDTH_LOG2)

int vga_init( void* vga_base );

int vga_set_display( void* vga_base, int displ_en );

int vga_write_memory( alt_dma_txchan tx, alt_dma_rxchan rx, void* vga_addr, const alt_u16* data, int cnt, int* done, int wait );

int vga_read_memory( void* vga_addr, alt_u16* data, int cnt );

int vga_switch( void* vga_base );

#endif /*VGA_ROUTINES_H_*/