db_shift.h

针对AVR单片机开发的嵌入式操作系统

#ifndef _DEV_BOARD_SHIFT_H
#define _DEV_BOARD_SHIFT_H

/*
 * This code has been taken from the Charon Development Board
 * Toolkit and slightly modified.
 * Harald Kipp
 */

#include <sys/types.h>

#define SHIFT_IO_DELAY        1

#define SHIFT_PORT            PORTD
#define SHIFT_PIN             PIND
#define SHIFT_DDR             DDRD

#if 0
/* 74165 */
#define SHIFT_IN_LOAD         PORTD3      /* shift/!load */
#define SHIFT_IN              PORTD4      /* data */
#define SHIFT_CLK             PORTD7      /* serial clock */

/* 74595 */
#define SHIFT_LCD_SET         PORTD1      // parallel write clock (storage register clock)
#define SHIFT_LED_SET         PORTD2      // parallel write clock (storage register clock)
#define SHIFT_OUT             PORTD6      // data

#define SHIFT_IN_LOAD_DDR     DDD3        /* pin direction bit */
#define SHIFT_IN_DDR          DDD4        /* pin direction bit */
#define SHIFT_CLK_DDR         DDD7        /* pin direction bit */

#define SHIFT_LCD_SET_DDR     DDD1        // pin direction bit
#define SHIFT_LED_SET_DDR     DDD2        // pin direction bit
#define SHIFT_OUT_DDR         DDD6        // pin direction bit
#endif

/* 74165 */
#define SHIFT_IN_LOAD         PORTD2      /* shift/!load */
#define SHIFT_IN              PORTD4      /* data */
#define SHIFT_CLK             PORTD7      /* serial clock */

/* 74595 */
#define SHIFT_LCD_SET         PORTD1      // parallel write clock (storage register clock)
#define SHIFT_LED_SET         PORTD5      // parallel write clock (storage register clock)
#define SHIFT_OUT             PORTD6      // data

#define SHIFT_IN_LOAD_DDR     DDD2        /* pin direction bit */
#define SHIFT_IN_DDR          DDD4        /* pin direction bit */
#define SHIFT_CLK_DDR         DDD7        /* pin direction bit */

#define SHIFT_LCD_SET_DDR     DDD1        // pin direction bit
#define SHIFT_LED_SET_DDR     DDD5        // pin direction bit
#define SHIFT_OUT_DDR         DDD6        // pin direction bit

// --- Prototypes --- //

void DevBoardShiftLedOut( u_char val );
void DevBoardShiftLcdOut( u_char val );
void DevBoardShiftWordOut( u_int val );
u_char DevBoardShiftByteIn( void );
void DevBoardShiftDelay(long nops);

#endif