-/*
- * Copyright © 2011 Keith Packard <keithp@keithp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-#include "ao.h"
-
-static void
-ao_lcd_port_delay(void)
-{
- uint8_t i;
-
- for (i = 0; i < 100; i++)
- ao_arch_nop();
-}
-
-void
-ao_lcd_port_put_nibble(uint8_t rs, uint8_t nibble)
-{
- P0 = (P0 & 0xf0) | (nibble & 0x0f);
- P1_1 = rs;
- P1_0 = 1;
- ao_lcd_port_delay();
- P1_0 = 0;
- ao_lcd_port_delay();
-}
-
-void
-ao_lcd_port_init(void)
-{
- /* LCD_E and LCD_RS are GPIO outputs */
- P1DIR |= 0x03;
- P1SEL &= ~0x03;
-
- /* LCD D4-D7 are GPIO outputs */
- P0DIR |= 0x0f;
- P0SEL &= ~0x0f;
-}