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update to driver separation
[qmk_firmware.git] / keyboards / lets_split / split_util.c
1 #include <avr/io.h>
2 #include <avr/wdt.h>
3 #include <avr/power.h>
4 #include <avr/interrupt.h>
5 #include <util/delay.h>
6 #include <avr/eeprom.h>
7 #include "split_util.h"
8 #include "matrix.h"
9 #include "keyboard.h"
10 #include "config.h"
11 #include "timer.h"
12
13 #ifdef USE_I2C
14 #  include "i2c.h"
15 #else
16 #  include "serial.h"
17 #endif
18
19 volatile bool isLeftHand = true;
20
21 static void setup_handedness(void) {
22   #ifdef EE_HANDS
23     isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
24   #else
25     // I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
26     #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
27       isLeftHand = !has_usb();
28     #else
29       isLeftHand = has_usb();
30     #endif
31   #endif
32 }
33
34 static void keyboard_master_setup(void) {
35 #ifdef USE_I2C
36     i2c_master_init();
37 #ifdef SSD1306OLED
38     matrix_master_OLED_init ();
39 #endif
40 #else
41     serial_master_init();
42 #endif
43 }
44
45 static void keyboard_slave_setup(void) {
46   timer_init();
47 #ifdef USE_I2C
48     i2c_slave_init(SLAVE_I2C_ADDRESS);
49 #else
50     serial_slave_init();
51 #endif
52 }
53
54 bool has_usb(void) {
55    USBCON |= (1 << OTGPADE); //enables VBUS pad
56    _delay_us(5);
57    return (USBSTA & (1<<VBUS));  //checks state of VBUS
58 }
59
60 void split_keyboard_setup(void) {
61    setup_handedness();
62
63    if (has_usb()) {
64       keyboard_master_setup();
65    } else {
66       keyboard_slave_setup();
67    }
68    sei();
69 }
70
71 void keyboard_slave_loop(void) {
72    matrix_init();
73
74    while (1) {
75       matrix_slave_scan();
76    }
77 }
78
79 // this code runs before the usb and keyboard is initialized
80 void matrix_setup(void) {
81     split_keyboard_setup();
82
83     if (!has_usb()) {
84         keyboard_slave_loop();
85     }
86 }