blob: 9d31d0dec361869f085d39363c6a1d5e1e3ea298 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
#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
#ifdef EE_HANDS
# include "eeconfig.h"
#endif
#ifndef SPLIT_USB_TIMEOUT
# define SPLIT_USB_TIMEOUT 2000
#endif
#ifndef SPLIT_USB_TIMEOUT_POLL
# define SPLIT_USB_TIMEOUT_POLL 10
#endif
volatile bool isLeftHand = true;
bool waitForUsb(void) {
for (uint8_t i = 0; i < (SPLIT_USB_TIMEOUT / SPLIT_USB_TIMEOUT_POLL); i++) {
// This will return true if a USB connection has been established
if (UDADDR & _BV(ADDEN)) {
return true;
}
wait_ms(SPLIT_USB_TIMEOUT_POLL);
}
// 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();
}
|
