keyboards/lets_split/split_util.c

   1 #include <avr/io.h>
   2 #include <avr/wdt.h>
   3 #include <avr/power.h>
   4 #include <avr/interrupt.h>
   5 #include <util/delay.h>
   6 #include <avr/eeprom.h>
   7 #include "split_util.h"
   8 #include "matrix.h"
   9 #include "keyboard.h"
  10 #include "config.h"
  11
  12 #ifdef USE_I2C
  13 #  include "i2c.h"
  14 #else
  15 #  include "serial.h"
  16 #endif
  17
  18 volatile bool isLeftHand = true;
  19
  20 static void setup_handedness(void) {
  21   #ifdef EE_HANDS
  22     isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
  23   #else
  24     // I2c_MASTER_RIGHT ish deprecate use MASTER_RIGHT instead since this works for both serial and i2c:
  25     #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
  26       isLeftHand = !has_usb();
  27     #else
  28       isLeftHand = has_usb();
  29     #endif
  30   #endif
  31 }
  32
  33 static void keyboard_master_setup(void) {
  34 #ifdef USE_I2C
  35     i2c_master_init();
  36 #ifdef SSD1306OLED
  37     matrix_master_OLED_init ();
  38 #endif
  39 #else
  40     serial_master_init();
  41 #endif
  42 }
  43
  44 static void keyboard_slave_setup(void) {
  45 #ifdef USE_I2C
  46     i2c_slave_init(SLAVE_I2C_ADDRESS);
  47 #else
  48     serial_slave_init();
  49 #endif
  50 }
  51
  52 bool has_usb(void) {
  53    USBCON |= (1 << OTGPADE); //enables VBUS pad
  54    _delay_us(5);
  55    return (USBSTA & (1<<VBUS));  //checks state of VBUS
  56 }
  57
  58 void split_keyboard_setup(void) {
  59    setup_handedness();
  60
  61    if (has_usb()) {
  62       keyboard_master_setup();
  63    } else {
  64       keyboard_slave_setup();
  65    }
  66    sei();
  67 }
  68
  69 void keyboard_slave_loop(void) {
  70    matrix_init();
  71
  72    while (1) {
  73       matrix_slave_scan();
  74    }
  75 }
  76
  77 // this code runs before the usb and keyboard is initialized
  78 void matrix_setup(void) {
  79     split_keyboard_setup();
  80
  81     if (!has_usb()) {
  82         keyboard_slave_loop();
  83     }
  84 }