Its use in lets_split_eh was factored out in https://github.com/qmk/qmk_firmware/pull/6411
		
			
				
	
	
		
			88 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			88 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
#include "split_util.h"
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#include "matrix.h"
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#include "keyboard.h"
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#include "config.h"
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#include "timer.h"
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#include "split_flags.h"
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#include "transport.h"
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#include "quantum.h"
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#ifdef EE_HANDS
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#   include "tmk_core/common/eeprom.h"
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#   include "eeconfig.h"
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#endif
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volatile bool isLeftHand = true;
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__attribute__((weak))
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bool is_keyboard_left(void) {
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  #ifdef SPLIT_HAND_PIN
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    // Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
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    setPinInput(SPLIT_HAND_PIN);
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    return readPin(SPLIT_HAND_PIN);
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  #else
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    #ifdef EE_HANDS
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      return eeprom_read_byte(EECONFIG_HANDEDNESS);
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    #else
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      #ifdef MASTER_RIGHT
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        return !is_keyboard_master();
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      #else
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        return is_keyboard_master();
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      #endif
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    #endif
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  #endif
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}
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bool is_keyboard_master(void)
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{
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#ifdef __AVR__
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  static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;
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  // only check once, as this is called often
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  if (usbstate == UNKNOWN)
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  {
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    USBCON |= (1 << OTGPADE);  // enables VBUS pad
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    wait_us(5);
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    usbstate = (USBSTA & (1 << VBUS)) ? MASTER : SLAVE;  // checks state of VBUS
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  }
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  return (usbstate == MASTER);
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#else
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  return true;
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#endif
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}
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static void keyboard_master_setup(void) {
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#if defined(USE_I2C)
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  #ifdef SSD1306OLED
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    matrix_master_OLED_init ();
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  #endif
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#endif
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  transport_master_init();
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  // For master the Backlight info needs to be sent on startup
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  // Otherwise the salve won't start with the proper info until an update
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  BACKLIT_DIRTY = true;
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}
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static void keyboard_slave_setup(void)
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{
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  transport_slave_init();
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}
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// this code runs before the usb and keyboard is initialized
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void matrix_setup(void)
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{
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  isLeftHand = is_keyboard_left();
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  if (is_keyboard_master())
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  {
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    keyboard_master_setup();
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  }
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  else
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  {
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    keyboard_slave_setup();
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  }
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}
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