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process_printer_bb.c
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process_printer_bb.c
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/* Copyright 2016 Jack Humbert
*
* 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/>.
*/
#include "process_printer.h"
#include "action_util.h"
bool printing_enabled = false;
uint8_t character_shift = 0;
#define SERIAL_PIN_DDR DDRD
#define SERIAL_PIN_PORT PORTD
#define SERIAL_PIN_MASK _BV(PD3)
#define SERIAL_DELAY 52
inline static void serial_delay(void) { _delay_us(SERIAL_DELAY); }
inline static void serial_high(void) { SERIAL_PIN_PORT |= SERIAL_PIN_MASK; }
inline static void serial_low(void) { SERIAL_PIN_PORT &= ~SERIAL_PIN_MASK; }
inline static void serial_output(void) { SERIAL_PIN_DDR |= SERIAL_PIN_MASK; }
void enable_printing() {
printing_enabled = true;
serial_output();
serial_high();
}
void disable_printing() { printing_enabled = false; }
uint8_t shifted_numbers[10] = {0x21, 0x40, 0x23, 0x24, 0x25, 0x5E, 0x26, 0x2A, 0x28, 0x29};
// uint8_t keycode_to_ascii[0xFF][2];
// keycode_to_ascii[KC_MINS] = {0x2D, 0x5F};
void print_char(char c) {
uint8_t b = 8;
serial_output();
while (b--) {
if (c & (1 << b)) {
serial_high();
} else {
serial_low();
}
serial_delay();
}
}
void print_string(char c[]) {
for (uint8_t i = 0; i < strlen(c); i++) print_char(c[i]);
}
bool process_printer(uint16_t keycode, keyrecord_t *record) {
if (keycode == PRINT_ON) {
enable_printing();
return false;
}
if (keycode == PRINT_OFF) {
disable_printing();
return false;
}
if (printing_enabled) {
switch (keycode) {
case KC_EXLM ... KC_RPRN:
case KC_UNDS:
case KC_PLUS:
case KC_LCBR:
case KC_RCBR:
case KC_PIPE:
case KC_TILD:
keycode &= 0xFF;
case KC_LSFT:
case KC_RSFT:
if (record->event.pressed) {
character_shift++;
} else {
character_shift--;
}
return false;
break;
}
switch (keycode) {
case KC_F1:
if (record->event.pressed) {
print_string("This is a line of text!\n\n\n");
}
return false;
case KC_ESC:
if (record->event.pressed) {
print_char(0x1B);
}
return false;
break;
case KC_SPC:
if (record->event.pressed) {
print_char(0x20);
}
return false;
break;
case KC_A ... KC_Z:
if (record->event.pressed) {
if (character_shift) {
print_char(0x41 + (keycode - KC_A));
} else {
print_char(0x61 + (keycode - KC_A));
}
}
return false;
break;
case KC_1 ... KC_0:
if (record->event.pressed) {
if (character_shift) {
print_char(shifted_numbers[keycode - KC_1]);
} else {
print_char(0x30 + ((keycode - KC_1 + 1) % 10));
}
}
return false;
break;
case KC_ENT:
if (record->event.pressed) {
if (character_shift) {
print_char(0x0C);
} else {
print_char(0x0A);
}
}
return false;
break;
case KC_BSPC:
if (record->event.pressed) {
if (character_shift) {
print_char(0x18);
} else {
print_char(0x1A);
}
}
return false;
break;
case KC_DOT:
if (record->event.pressed) {
if (character_shift) {
print_char(0x3E);
} else {
print_char(0x2E);
}
}
return false;
break;
case KC_COMM:
if (record->event.pressed) {
if (character_shift) {
print_char(0x3C);
} else {
print_char(0x2C);
}
}
return false;
break;
case KC_SLSH:
if (record->event.pressed) {
if (character_shift) {
print_char(0x3F);
} else {
print_char(0x2F);
}
}
return false;
break;
case KC_QUOT:
if (record->event.pressed) {
if (character_shift) {
print_char(0x22);
} else {
print_char(0x27);
}
}
return false;
break;
case KC_GRV:
if (record->event.pressed) {
if (character_shift) {
print_char(0x7E);
} else {
print_char(0x60);
}
}
return false;
break;
case KC_MINS:
if (record->event.pressed) {
if (character_shift) {
print_char(0x5F);
} else {
print_char(0x2D);
}
}
return false;
break;
case KC_EQL:
if (record->event.pressed) {
if (character_shift) {
print_char(0x2B);
} else {
print_char(0x3D);
}
}
return false;
break;
case KC_LBRC:
if (record->event.pressed) {
if (character_shift) {
print_char(0x7B);
} else {
print_char(0x5B);
}
}
return false;
break;
case KC_RBRC:
if (record->event.pressed) {
if (character_shift) {
print_char(0x7D);
} else {
print_char(0x5D);
}
}
return false;
break;
case KC_BSLS:
if (record->event.pressed) {
if (character_shift) {
print_char(0x7C);
} else {
print_char(0x5C);
}
}
return false;
break;
}
}
return true;
}