/* lcd.c */ /* lcd - affiche des messages sur l'écran lcd. {{{ * * Copyright (C) 2006 Christophe Le Blanc * * Robot APB Team/Efrei 2006. * Web: http://assos.efrei.fr/robot/ * Email: robot AT efrei DOT fr * * 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 "common.h" #include "modules/utils/utils.h" #include "modules/uart/uart.h" #include "modules/proto/proto.h" #include "io.h" #include /** Envois une commande. */ void lcd_send_command (u8 cmd) { PORTC = (PORTC & 0xf0) | (cmd >> 4); PORTD = (PORTD & 0x03) | (cmd << 5); PORTB = (PORTB & 0xfe) | (cmd >> 3 & 0x01); PORTD = PORTD | 0x10; PORTD = PORTD & 0xef; utils_delay_us (40); } /* Envois un caractère. */ void lcd_send_character (u8 c) { PORTC = (PORTC & 0xf0) | (c >> 4); PORTD = (PORTD & 0x03) | (c << 5) | 0x04; PORTB = (PORTB & 0xfe) | (c >> 3 & 0x01); PORTD = PORTD | 0x10; PORTD = PORTD & 0xef; utils_delay_us (40); } /* Envois une chaîne de caractère. */ void lcd_send_string_n (const char *s,u8 i) { u8 cpt ; lcd_send_command(0x01); utils_delay_ms(2); lcd_send_command(0x02); utils_delay_ms(2); for (cpt = 0 ; cpt < i ; cpt++) { if (cpt == 16) { lcd_send_command(0xc0); utils_delay_us(40); } lcd_send_character(s[cpt]); } } /* Envois une chaîne de caractère. */ void lcd_send_string (const char *s) { lcd_send_string_n (s, strlen (s)); } /* Initialisation du lcd. */ void lcd_init (void) { DDRC = 0x0f; DDRD = 0xfc; DDRB = 0x01; utils_delay_ms (15); lcd_send_command (0x38); utils_delay_ms (4.5); lcd_send_command (0x38); utils_delay_ms (1); lcd_send_command (0x38); lcd_send_command (0x38); lcd_send_command (0x08); lcd_send_command (0x01); utils_delay_ms (2); lcd_send_command (0x06); lcd_send_command (0x80); lcd_send_command (0x0f); } void proto_callback (uint8_t cmd, uint8_t size, uint8_t *args) { switch (cmd) { case 'z': if (size != 0) { proto_send0 ('?'); return; } else { utils_reset (); } break; case 'p': lcd_send_string_n (args, size); break; default: /* This is to handle default commands, return an error. */ proto_send0 ('?'); return; } /* When no error acknoledge. */ proto_send (cmd, size, args); } /* Fonction principale */ int main (void) { sei (); uart0_init (); proto_send0 ('z'); lcd_init (); while (1) { uint8_t c = uart0_getc (); proto_accept (c); } return 0; }