nios的免 费ip中只有16207的驱动。 在nios 的commponent中的src中，你包含了头文件后便可以调用了。 altera_avalon_lcd_16207.c 。。。。。。。。就是lcd函数。如果型号不对，你可以自己写，不难！ 节选如下 static void lcd_write_data(alt_LCD_16207_dev * dev, unsigned char data)
{
unsigned int base = dev->base; /* We impose a timeout on the driver in case the LCD panel isn't connected.
* The first time we call this function the timeout is approx 25ms
* (assuming 5 cycles per loop and a 200MHz clock). Obviously systems
* with slower clocks, or debug builds, or slower memory will take longer.
*/
int i = 1000000; /* Don't bother if the LCD panel didn't work before */
if (dev->broken)
return; /* Wait until LCD isn't busy. */
while (IORD_ALTERA_AVALON_LCD_16207_STATUS(base) & ALTERA_AVALON_LCD_16207_STATUS_BUSY_MSK)
if (--i == 0)
{
dev->broken = 1;
return;
} /* Despite what it says in the datasheet, the LCD isn't ready to accept
* a write immediately after it returns BUSY=0. Wait for 100us more.
*/
usleep(100); IOWR_ALTERA_AVALON_LCD_16207_DATA(base, data); dev->address++;
} /* --------------------------------------------------------------------- */ static void lcd_clear_screen(alt_LCD_16207_dev * dev)
{
int y; lcd_write_command(dev, LCD_CMD_CLEAR); dev->x = 0;
dev->y = 0;
dev->address = 0; for (y = 0 ; y < ALT_LCD_HEIGHT ; y++)
{
memset(dev->line[y].data, ' ', sizeof(dev->line[0].data));
memset(dev->line[y].visible, ' ', sizeof(dev->line[0].visible));
dev->line[y].width = 0;
}
} /* --------------------------------------------------------------------- */ static void lcd_repaint_screen(alt_LCD_16207_dev * dev)
{
int y, x; /* scrollpos controls how much the lines have scrolled round. The speed
* each line scrolls at is controlled by its speed variable - while
* scrolline lines will wrap at the position set by width
*/ int scrollpos = dev->scrollpos; for (y = 0 ; y < ALT_LCD_HEIGHT ; y++)
{
int width = dev->line[y].width;
int offset = (scrollpos * dev->line[y].speed) >> 8;
if (offset >= width)
offset = 0; for (x = 0 ; x < ALT_LCD_WIDTH ; x++)
{
char c = dev->line[y].data[(x + offset) % width]; /* Writing data takes 40us, so don't do it unless required */
if (dev->line[y].visible[x] != c)
{
unsigned char address = x + colstart[y]; if (address != dev->address)
{
lcd_write_command(dev, LCD_CMD_WRITE_DATA | address);
dev->address = address;
} lcd_write_data(dev, c);
dev->line[y].visible[x] = c;
}
}
}
} /* --------------------------------------------------------------------- */ static void lcd_scroll_up(alt_LCD_16207_dev * dev)
{
int y; for (y = 0 ; y < ALT_LCD_HEIGHT ; y++)
{
if (y < ALT_LCD_HEIGHT-1)
memcpy(dev->line[y].data, dev->line[y+1].data, ALT_LCD_VIRTUAL_WIDTH);
else
memset(dev->line[y].data, ' ', ALT_LCD_VIRTUAL_WIDTH);
} dev->y--;
} /* --------------------------------------------------------------------- */ static void lcd_handle_escape(alt_LCD_16207_dev * dev, char c)
{ | 
