qmk_firmware/keyboards/converter/ibm_terminal/config.h

/*
Copyright 2012 Jun Wako <wakojun@gmail.com>
Copyright 2016 Priyadi Iman Nurcahyo <priyadi@priyadi.net>

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, see <http://www.gnu.org/licenses/>.
*/

#pragma once

/* matrix size */
#define MATRIX_ROWS 17  // keycode bit: 3-0
#define MATRIX_COLS 8   // keycode bit: 6-4


/* legacy keymap support */
#define USE_LEGACY_KEYMAP


/* key combination for command */
#define IS_COMMAND() ( \
    get_mods() == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT) | MOD_BIT(KC_RALT) | MOD_BIT(KC_RCTL)) \
)


/*
 * PS/2 USART configuration for ATMega32U4
 */
#ifdef PS2_DRIVER_USART
/* XCK for clock line */
#define PS2_CLOCK_PIN   D5
#define PS2_DATA_PIN    D2

/* synchronous, odd parity, 1-bit stop, 8-bit data, sample at falling edge */
/* set DDR of CLOCK as input to be slave */
#define PS2_USART_INIT() do {   \
    PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT);   \
    PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT);     \
    UCSR1C = ((1 << UMSEL10) |  \
              (3 << UPM10)   |  \
              (0 << USBS1)   |  \
              (3 << UCSZ10)  |  \
              (0 << UCPOL1));   \
    UCSR1A = 0;                 \
    UBRR1H = 0;                 \
    UBRR1L = 0;                 \
} while (0)
#define PS2_USART_RX_INT_ON() do {  \
    UCSR1B = ((1 << RXCIE1) |       \
              (1 << RXEN1));        \
} while (0)
#define PS2_USART_RX_POLL_ON() do { \
    UCSR1B = (1 << RXEN1);          \
} while (0)
#define PS2_USART_OFF() do {    \
    UCSR1C = 0;                 \
    UCSR1B &= ~((1 << RXEN1) |  \
                (1 << TXEN1));  \
} while (0)
#define PS2_USART_RX_READY      (UCSR1A & (1<<RXC1))
#define PS2_USART_RX_DATA       UDR1
#define PS2_USART_ERROR         (UCSR1A & ((1<<FE1) | (1<<DOR1) | (1<<UPE1)))
#define PS2_USART_RX_VECT       USART1_RX_vect
#endif


/*
 * PS/2 Interrupt configuration
 */
#ifdef PS2_DRIVER_INTERRUPT
/* uses INT1 for clock line(ATMega32U4) */
#define PS2_CLOCK_PIN   D1
#define PS2_DATA_PIN    D0

#define PS2_INT_INIT()  do {    \
    EICRA |= ((1<<ISC11) |      \
              (0<<ISC10));      \
} while (0)
#define PS2_INT_ON()  do {      \
    EIMSK |= (1<<INT1);         \
} while (0)
#define PS2_INT_OFF() do {      \
    EIMSK &= ~(1<<INT1);        \
} while (0)
#define PS2_INT_VECT    INT1_vect
#endif


/*
 * PS/2 Busywait configuration
 */
#ifdef PS2_DRIVER_BUSYWAIT
#define PS2_CLOCK_PIN   D1
#define PS2_DATA_PIN    D0
#endif