summaryrefslogtreecommitdiff
path: root/quantum/split_common/split_util.c
blob: 90735eda4423f83640649477c63c1e84733ff692 (plain)
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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
#include "split_util.h"
#include "matrix.h"
#include "keyboard.h"
#include "config.h"
#include "timer.h"
#include "transport.h"
#include "quantum.h"
#include "wait.h"

#ifdef PROTOCOL_LUFA
#    include <LUFA/Drivers/USB/USB.h>
#endif

#ifdef PROTOCOL_VUSB
#    include "usbdrv.h"
#endif

#ifdef EE_HANDS
#    include "eeconfig.h"
#endif

#if defined(RGBLIGHT_ENABLE) && defined(RGBLED_SPLIT)
#    include "rgblight.h"
#endif

#ifndef SPLIT_USB_TIMEOUT
#    define SPLIT_USB_TIMEOUT 2000
#endif

#ifndef SPLIT_USB_TIMEOUT_POLL
#    define SPLIT_USB_TIMEOUT_POLL 10
#endif

#ifdef PROTOCOL_CHIBIOS
#    define SPLIT_USB_DETECT  // Force this on for now
#endif

volatile bool isLeftHand = true;

#if defined(SPLIT_USB_DETECT)
#    if defined(PROTOCOL_LUFA)
static inline bool usbHasActiveConnection(void) { return USB_Device_IsAddressSet(); }
static inline void usbDisable(void) {
    USB_Disable();
    USB_DeviceState = DEVICE_STATE_Unattached;
}
#    elif defined(PROTOCOL_CHIBIOS)
static inline bool usbHasActiveConnection(void) { return usbGetDriverStateI(&USBD1) == USB_ACTIVE; }
static inline void usbDisable(void) { usbStop(&USBD1); }
#    elif defined(PROTOCOL_VUSB)
static inline bool usbHasActiveConnection(void) {
    usbPoll();
    return usbConfiguration;
}
static inline void usbDisable(void) { usbDeviceDisconnect(); }
#    else
static inline bool usbHasActiveConnection(void) { return true; }
static inline void usbDisable(void) {}
#    endif

bool usbIsActive(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 (usbHasActiveConnection()) {
            return true;
        }
        wait_ms(SPLIT_USB_TIMEOUT_POLL);
    }

    // Avoid NO_USB_STARTUP_CHECK - Disable USB as the previous checks seem to enable it somehow
    usbDisable();

    return false;
}
#elif defined(PROTOCOL_LUFA)
static inline bool usbIsActive(void) {
    USB_OTGPAD_On();  // enables VBUS pad
    wait_us(5);

    return USB_VBUS_GetStatus();  // checks state of VBUS
}
#else
static inline bool usbIsActive(void) { return true; }
#endif

#ifdef SPLIT_HAND_MATRIX_GRID
void matrix_io_delay(void);

static uint8_t peek_matrix_intersection(pin_t out_pin, pin_t in_pin) {
    setPinInputHigh(in_pin);
    setPinOutput(out_pin);
    writePinLow(out_pin);
    // It's almost unnecessary, but wait until it's down to low, just in case.
    wait_us(1);
    uint8_t pin_state = readPin(in_pin);
    // Set out_pin to a setting that is less susceptible to noise.
    setPinInputHigh(out_pin);
    matrix_io_delay(); // Wait for the pull-up to go HIGH.
    return pin_state;
}
#endif

__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(SPLIT_HAND_MATRIX_GRID)
#   ifdef SPLIT_HAND_MATRIX_GRID_LOW_IS_RIGHT
    return peek_matrix_intersection(SPLIT_HAND_MATRIX_GRID);
#   else
    return !peek_matrix_intersection(SPLIT_HAND_MATRIX_GRID);
#   endif
#elif defined(EE_HANDS)
    return eeconfig_read_handedness();
#elif defined(MASTER_RIGHT)
    return !is_keyboard_master();
#endif

    return is_keyboard_master();
}

__attribute__((weak)) bool is_keyboard_master(void) {
    static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;

    // only check once, as this is called often
    if (usbstate == UNKNOWN) {
        usbstate = usbIsActive() ? MASTER : SLAVE;
    }

    return (usbstate == MASTER);
}

// this code runs before the keyboard is fully initialized
void split_pre_init(void) {
    isLeftHand = is_keyboard_left();

#if defined(RGBLIGHT_ENABLE) && defined(RGBLED_SPLIT)
    uint8_t num_rgb_leds_split[2] = RGBLED_SPLIT;
    if (isLeftHand) {
        rgblight_set_clipping_range(0, num_rgb_leds_split[0]);
    } else {
        rgblight_set_clipping_range(num_rgb_leds_split[0], num_rgb_leds_split[1]);
    }
#endif

    if (is_keyboard_master()) {
#if defined(USE_I2C) && defined(SSD1306OLED)
        matrix_master_OLED_init();
#endif
        transport_master_init();
    }
}

// this code runs after the keyboard is fully initialized
//   - avoids race condition during matrix_init_quantum where slave can start
//     receiving before the init process has completed
void split_post_init(void) {
    if (!is_keyboard_master()) {
        transport_slave_init();
    }
}