quantum/split_common/split_util.c

   1 #include "split_util.h"
   2 #include "matrix.h"
   3 #include "keyboard.h"
   4 #include "config.h"
   5 #include "timer.h"
   6 #include "transport.h"
   7 #include "quantum.h"
   8
   9 #ifdef EE_HANDS
  10 #   include "tmk_core/common/eeprom.h"
  11 #   include "eeconfig.h"
  12 #endif
  13
  14 volatile bool isLeftHand = true;
  15
  16 __attribute__((weak))
  17 bool is_keyboard_left(void) {
  18   #ifdef SPLIT_HAND_PIN
  19     // Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
  20     setPinInput(SPLIT_HAND_PIN);
  21     return readPin(SPLIT_HAND_PIN);
  22   #else
  23     #ifdef EE_HANDS
  24       return eeprom_read_byte(EECONFIG_HANDEDNESS);
  25     #else
  26       #ifdef MASTER_RIGHT
  27         return !is_keyboard_master();
  28       #else
  29         return is_keyboard_master();
  30       #endif
  31     #endif
  32   #endif
  33 }
  34
  35 bool is_keyboard_master(void)
  36 {
  37 #ifdef __AVR__
  38   static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;
  39
  40   // only check once, as this is called often
  41   if (usbstate == UNKNOWN)
  42   {
  43     USBCON |= (1 << OTGPADE);  // enables VBUS pad
  44     wait_us(5);
  45
  46     usbstate = (USBSTA & (1 << VBUS)) ? MASTER : SLAVE;  // checks state of VBUS
  47   }
  48
  49   return (usbstate == MASTER);
  50 #else
  51   return true;
  52 #endif
  53 }
  54
  55 static void keyboard_master_setup(void) {
  56 #if defined(USE_I2C) || defined(EH)
  57   #ifdef SSD1306OLED
  58     matrix_master_OLED_init ();
  59   #endif
  60 #endif
  61   transport_master_init();
  62 }
  63
  64 static void keyboard_slave_setup(void)
  65 {
  66   transport_slave_init();
  67 }
  68
  69 // this code runs before the usb and keyboard is initialized
  70 void matrix_setup(void)
  71 {
  72   isLeftHand = is_keyboard_left();
  73
  74   if (is_keyboard_master())
  75   {
  76     keyboard_master_setup();
  77   }
  78   else
  79   {
  80     keyboard_slave_setup();
  81   }
  82 }