AVR-LibC  2.2.0
Standard C library for AVR-GCC
 

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defines.h
1/*
2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return. Joerg Wunsch
7 * ----------------------------------------------------------------------------
8 *
9 * General stdiodemo defines
10 *
11 * $Id$
12 */
13
14/* CPU frequency */
15#define F_CPU 1000000UL
16
17/* UART baud rate */
18#define UART_BAUD 9600
19
20/* HD44780 LCD port connections */
21#define HD44780_RS A, 6
22#define HD44780_RW A, 4
23#define HD44780_E A, 5
24/* The data bits have to be not only in ascending order but also consecutive. */
25#define HD44780_D4 A, 0
26
27/* Whether to read the busy flag, or fall back to
28 worst-time delays. */
29#define USE_BUSY_BIT 1