#if !defined(PDSP188x_CONFIG_AVR_H_)
#  define PDSP188x_CONFIG_AVR_H_

#  include <avr/io.h>
#  include <util/delay.h>

#  define DATA_PORT PORTB
#  define DATA_DIR DDRB

/**
 * Control using 595 shift register
 */
#  define LATCH _BV(PB4)
#  define DATA _BV(PB5)
#  define CLK _BV(PB7)

/**
 * Writes data into display when WR=0. Note CE=0 to enable write cycle.
 */
#  define WR _BV(PB0)

/**
 * Accesses Flash RAM. Address inputs A0–A2 select digit address
 * while data bit D0 sets (D0=1) or resets (D0=0) Flash bit, A3 and A4 ignored
 */
#  define FL _BV(PB1)

/**
 * Initializes display; clears Character RAM (20H), Flash RAM (00H), control word (00H), and resets
 * internal counters. UDC Address Register and UDC RAM unaffected.
 */
#  define RST _BV(PB6)

#  define ADDR_PORT PORTC
#  define ADDR_DIR DDRC

/**
 * A0–A2 select specific digits
 * A3 and A4 access parts of memory together with Flash pin
 */
#  define A0 _BV(PC3)
#  define A1 _BV(PC4)
#  define A2 _BV(PC5)
#  define A3 _BV(PC6)
#  define A4 _BV(PC7)

#endif