#ifndef INCLUDE_STEPPAD_44_H
#define INCLUDE_STEPPAD_44_H

#define output(directions,pin) (directions |= pin) // set port direction for output
#define set(port,pin) (port |= pin) // set port pin
#define clear(port,pin) (port &= (~pin)) // clear port pin
#define pin_test(pins,pin) (pins & pin) // test for port pin
#define bit_test(byte,bit) (byte & (1 << bit)) // test for bit set
#define bit_delay_time 102 // bit delay for 9600 with overhead
#define bit_delay() _delay_us(bit_delay_time) // RS232 bit delay
#define half_bit_delay() _delay_us(bit_delay_time/2) // RS232 half bit delay
#define charge_delay_1() _delay_us(1) // charge delay 1
#define charge_delay_2() _delay_us(10) // charge delay 2
#define charge_delay_3() _delay_us(100) // charge delay 3
#define settle_delay() _delay_us(100) // settle delay
#define char_delay() _delay_ms(10) // char delay

#define serial_port PORTB
#define serial_direction DDRB
#define serial_pin_out (1 << PB1)
#define charge_port PORTB
#define charge_direction DDRB
#define charge_pin (1 << PB2)

#define ref (0 << REFS1) | (0 << REFS0) // reference voltage

#define sense0 (1 << MUX2) | (1 << MUX1) | (1 << MUX0) // PA7
#define sense1 (1 << MUX2) | (1 << MUX1) | (0 << MUX0) // PA6
#define sense2 (1 << MUX2) | (0 << MUX1) | (1 << MUX0) // PA5
#define sense3 (1 << MUX2) | (0 << MUX1) | (0 << MUX0) // PA4
#define sense4 (0 << MUX2) | (1 << MUX1) | (1 << MUX0) // PA3
#define sense5 (0 << MUX2) | (1 << MUX1) | (0 << MUX0) // PA2
#define sense6 (0 << MUX2) | (0 << MUX1) | (1 << MUX0) // PA1
#define sense7 (0 << MUX2) | (0 << MUX1) | (0 << MUX0) // PA0

#define down_threshold 700
#define up_threshold 750

#define max_buffer 25

//
// send character in txchar on port pin
//    assumes line driver (inverts bits)
//
void put_char(volatile unsigned char *port, unsigned char pin, char txChar);

//
// print a null-terminated string
//
void put_string(volatile unsigned char *port, unsigned char pin, char *str);

void check_pin(unsigned char pin);

void sense_pin(unsigned char pin, int *oldValue, char labelChar);

#endif