mirror of
https://github.com/mfulz/qmk_firmware.git
synced 2025-10-31 13:22:31 +01:00
101 lines
2.1 KiB
C
Executable File
101 lines
2.1 KiB
C
Executable File
#include <avr/io.h>
|
|
#include <avr/wdt.h>
|
|
#include <avr/power.h>
|
|
#include <avr/interrupt.h>
|
|
#include <util/delay.h>
|
|
#include <avr/eeprom.h>
|
|
#include "split_util.h"
|
|
#include "matrix.h"
|
|
#include "keyboard.h"
|
|
#include "wait.h"
|
|
|
|
#ifdef USE_MATRIX_I2C
|
|
# include "i2c.h"
|
|
#else
|
|
# include "split_scomm.h"
|
|
#endif
|
|
|
|
#ifndef SPLIT_USB_TIMEOUT
|
|
# define SPLIT_USB_TIMEOUT 2500
|
|
#endif
|
|
|
|
volatile bool isLeftHand = true;
|
|
|
|
bool waitForUsb(void) {
|
|
for (uint8_t i = 0; i < (SPLIT_USB_TIMEOUT / 100); i++) {
|
|
// This will return true of a USB connection has been established
|
|
if (UDADDR & _BV(ADDEN)) {
|
|
return true;
|
|
}
|
|
wait_ms(100);
|
|
}
|
|
|
|
// Avoid NO_USB_STARTUP_CHECK - Disable USB as the previous checks seem to enable it somehow
|
|
(USBCON &= ~(_BV(USBE) | _BV(OTGPADE)));
|
|
|
|
return false;
|
|
}
|
|
|
|
__attribute__((weak)) bool is_keyboard_left(void) {
|
|
#if defined(SPLIT_HAND_PIN)
|
|
// Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
|
|
setPinInput(SPLIT_HAND_PIN);
|
|
return readPin(SPLIT_HAND_PIN);
|
|
#elif defined(EE_HANDS)
|
|
return eeconfig_read_handedness();
|
|
#elif defined(MASTER_RIGHT)
|
|
return !has_usb();
|
|
#endif
|
|
|
|
return has_usb();
|
|
}
|
|
|
|
__attribute__((weak)) bool has_usb(void) {
|
|
static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;
|
|
|
|
// only check once, as this is called often
|
|
if (usbstate == UNKNOWN) {
|
|
#if defined(SPLIT_USB_DETECT)
|
|
usbstate = waitForUsb() ? MASTER : SLAVE;
|
|
#elif defined(__AVR__)
|
|
USBCON |= (1 << OTGPADE); // enables VBUS pad
|
|
wait_us(5);
|
|
|
|
usbstate = (USBSTA & (1 << VBUS)) ? MASTER : SLAVE; // checks state of VBUS
|
|
#else
|
|
usbstate = MASTER;
|
|
#endif
|
|
}
|
|
|
|
return (usbstate == MASTER);
|
|
}
|
|
|
|
static void keyboard_master_setup(void) {
|
|
|
|
#ifdef USE_MATRIX_I2C
|
|
i2c_master_init();
|
|
#else
|
|
serial_master_init();
|
|
#endif
|
|
}
|
|
|
|
static void keyboard_slave_setup(void) {
|
|
|
|
#ifdef USE_MATRIX_I2C
|
|
i2c_slave_init(SLAVE_I2C_ADDRESS);
|
|
#else
|
|
serial_slave_init();
|
|
#endif
|
|
}
|
|
|
|
void split_keyboard_setup(void) {
|
|
isLeftHand = is_keyboard_left();
|
|
|
|
if (has_usb()) {
|
|
keyboard_master_setup();
|
|
} else {
|
|
keyboard_slave_setup();
|
|
}
|
|
sei();
|
|
}
|