keyboards/mint60/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
  11 #ifdef USE_I2C
  12 #  include "i2c.h"
  13 #else
  14 #  include "serial.h"
  15 #endif
  16
  17 volatile bool isLeftHand = true;
  18
  19 static void setup_handedness(void) {
  20   #ifdef EE_HANDS
  21     isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
  22   #else
  23     // I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
  24     #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
  25       isLeftHand = !has_usb();
  26     #else
  27       isLeftHand = has_usb();
  28     #endif
  29   #endif
  30 }
  31
  32 static void keyboard_master_setup(void) {
  33
  34 #ifdef USE_I2C
  35     i2c_master_init();
  36 #else
  37     serial_master_init();
  38 #endif
  39 }
  40
  41 static void keyboard_slave_setup(void) {
  42
  43 #ifdef USE_I2C
  44     i2c_slave_init(SLAVE_I2C_ADDRESS);
  45 #else
  46     serial_slave_init();
  47 #endif
  48 }
  49
  50 bool has_usb(void) {
  51    USBCON |= (1 << OTGPADE); //enables VBUS pad
  52    _delay_us(5);
  53    return (USBSTA & (1<<VBUS));  //checks state of VBUS
  54 }
  55
  56 void split_keyboard_setup(void) {
  57    setup_handedness();
  58
  59    if (has_usb()) {
  60       keyboard_master_setup();
  61    } else {
  62       keyboard_slave_setup();
  63    }
  64    sei();
  65 }
  66
  67 // this code runs before the usb and keyboard is initialized
  68 void matrix_setup(void) {
  69     split_keyboard_setup();
  70 }